def train(opt):
# Load data
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
# Tensorboard summaries (they're great!)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
# Load pretrained model, info file, histories file
infos = {}
histories = {}
if opt.start_from is not None:
print("opt.start_from: " + str(opt.start_from))
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# create model
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model)
# load model
if os.path.isfile("log_sc/model.pth"):
model_path = "log_sc/model.pth"
state_dict = torch.load(model_path)
dp_model.load_state_dict(state_dict)
dp_model.train()
# create/load vector model
vectorModel = models.setup_vectorModel().cuda()
dp_vectorModel = torch.nn.DataParallel(vectorModel)
# load vector model
if os.path.isfile("log_sc/model_vec.pth"):
model_vec_path = "log_sc/model_vec.pth"
state_dict_vec = torch.load(model_vec_path)
dp_vectorModel.load_state_dict(state_dict_vec)
dp_vectorModel.train()
optimizer = utils.build_optimizer(
list(model.parameters()) + list(vectorModel.parameters()), opt)
update_lr_flag = True
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
# Loss function
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
vec_crit = nn.L1Loss()
# create idxs for doc2vec vectors
with open('paragraphs_image_ids.txt', 'r') as file:
paragraph_image_ids = file.readlines()
paragraph_image_ids = [int(i) for i in paragraph_image_ids]
# select corresponding vectors
with open('paragraphs_vectors.txt', 'r') as the_file:
vectors = the_file.readlines()
vectors_list = []
for string in vectors:
vectors_list.append([float(s) for s in string.split(' ')])
vectors_list_np = np.asarray(vectors_list)
print("Starting training loop!")
# Training loop
while True:
# Update learning rate once per epoch
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
start = time.time()
data = loader.get_batch('train')
data_time = time.time() - start
start = time.time()
# pad data['att_feats'] axis=1 to have length = 83
def pad_along_axis(array, target_length, axis=0):
pad_size = target_length - array.shape[axis]
axis_nb = len(array.shape)
if pad_size < 0:
return a
npad = [(0, 0) for x in range(axis_nb)]
npad[axis] = (0, pad_size)
b = np.pad(array,
pad_width=npad,
mode='constant',
constant_values=0)
return b
data['att_feats'] = pad_along_axis(data['att_feats'], 83, axis=1)
# Unpack data
torch.cuda.synchronize()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['masks'],
data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
idx = []
for element in data['infos']:
idx.append(paragraph_image_ids.index(element['id']))
batch_vectors = vectors_list_np[idx]
# Forward pass and loss
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, att_feats,
att_masks, data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
att_feats_reshaped = att_feats.permute(0, 2, 1).cuda()
semantic_features = dp_vectorModel(att_feats_reshaped.cuda(),
fc_feats) # (10, 2048)
batch_vectors = torch.from_numpy(
batch_vectors).float().cuda() # (10, 512)
vec_loss = vec_crit(semantic_features, batch_vectors)
alpha_ = 1
loss = loss + (alpha_ * vec_loss)
# Backward pass
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
# Print
total_time = time.time() - start
if iteration % opt.print_freq == 1:
print('Read data:', time.time() - start)
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, data_time, total_time))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), data_time, total_time))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# Validate and save model
if True:
# Evaluate model
eval_kwargs = {'split': 'test', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Our metric is CIDEr if available, otherwise validation loss
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
# Save model in checkpoint path
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(dp_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
# save vec model
checkpoint_path = os.path.join(opt.checkpoint_path,
'model_vec.pth')
torch.save(dp_vectorModel.state_dict(), checkpoint_path)
print("model_vec saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
# Save model to unique file if new best model
if best_flag:
model_fname = 'model-best-i{:05d}-score{:.4f}.pth'.format(
iteration, best_val_score)
infos_fname = 'model-best-i{:05d}-infos.pkl'.format(iteration)
checkpoint_path = os.path.join(opt.checkpoint_path,
model_fname)
torch.save(dp_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
# best vec
model_fname_vec = 'model-best-vec-i{:05d}-score{:.4f}.pth'.format(
iteration, best_val_score)
checkpoint_path = os.path.join(opt.checkpoint_path,
model_fname_vec)
torch.save(dp_vectorModel.state_dict(), checkpoint_path)
print("model_vec saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, infos_fname),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Deal with feature things before anything
acc_steps = getattr(opt, 'acc_steps', 1)
loader = DataLoaderRaw(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'),
'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.vocab = loader.get_vocab()
dp_model = models.setup(opt)
model = dp_model.cuda()
del opt.vocab
dp_lw_model = LossWrapper(dp_model, opt)
lw_model = dp_lw_model
epoch_done = True
# Assure in training mode
dp_lw_model.train()
if opt.noamopt:
assert opt.caption_model in [
'transformer', 'mngrcnn'
], 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
def save_checkpoint(model, infos, optimizer, histories=None, append=''):
if len(append) > 0:
append = '-' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'model%s.pth' % (append))
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer%s.pth' % (append))
torch.save(optimizer.state_dict(), optimizer_path)
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '%s.pkl' % (append)),
'wb') as f:
utils.pickle_dump(infos, f)
if histories:
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '%s.pkl' % (append)),
'wb') as f:
utils.pickle_dump(histories, f)
try:
while True:
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
# set the decayed rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
start = time.time()
if (opt.use_warmup == 1) and (iteration < opt.noamopt_warmup):
opt.current_lr = opt.learning_rate * \
(iteration+1) / opt.noamopt_warmup
utils.set_lr(optimizer, opt.current_lr)
# Load data from train split (0)
data = loader.get_batch('train')
print('Read data:', time.time() - start)
if (iteration % acc_steps == 0):
optimizer.zero_grad()
torch.cuda.synchronize()
start = time.time()
tmp = [data['attr'], data['img'], data['labels'], data['masks']]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
attrs, imgs, labels, masks = tmp
model_out = dp_lw_model(attrs, imgs, labels, masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag)
loss = model_out['loss'].mean()
loss_sp = loss / acc_steps
loss_sp.backward()
if ((iteration + 1) % acc_steps == 0):
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
torch.cuda.synchronize()
train_loss = loss.item()
end = time.time()
if not sc_flag:
print(
"{}: iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}"
.format(
time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),
iteration, epoch, train_loss, end - start))
else:
print(
"{}: iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}"
.format(
time.strftime("%Y-%m-%d %H:%M:%S",
time.localtime()), iteration, epoch,
model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
model_out['reward'].mean(), iteration)
loss_history[
iteration] = train_loss if not sc_flag else model_out[
'reward'].mean()
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss',
val_loss, iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
save_checkpoint(model, infos, optimizer, histories)
if opt.save_history_ckpt:
save_checkpoint(model,
infos,
optimizer,
append=str(iteration))
if best_flag:
save_checkpoint(model, infos, optimizer, append='best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
# on node-13 this line cauuses a bug
from torch.utils.tensorboard import SummaryWriter
################################
# Build dataloader
################################
# the loader here needs to be fixed actually...
# so that data loading is correct
# need to modify opt here so everything else is correct
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
##########################
# Initialize infos
##########################
infos = {
'iter': 0,
'epoch': 0,
'loader_state_dict': None,
'vocab': loader.get_vocab(),
}
# Load old infos(if there is) and check if models are compatible
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl')):
raise Exception("not implemented")
infos['opt'] = opt
#########################
# Build logger
#########################
# naive dict logger
histories = defaultdict(dict)
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'),
'rb') as f:
histories.update(utils.pickle_load(f))
# tensorboard logger
tb_summary_writer = SummaryWriter(opt.checkpoint_path)
##########################
# Build model
##########################
# opt.vocab = loader.get_vocab()
opt.vocab = loader.get_vocab()
model = TransformerLM(opt).cuda() # only set up the language model
del opt.vocab
# Load pretrained weights:
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'model.pth')):
model.load_state_dict(
torch.load(os.path.join(opt.start_from, 'model.pth')))
# Wrap generation model with loss function(used for training)
# This allows loss function computed separately on each machine
lw_model = LossWrapper(model, opt)
# Wrap with dataparallel
dp_model = torch.nn.DataParallel(model)
dp_lw_model = torch.nn.DataParallel(lw_model)
##########################
# Build optimizer
##########################
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
#########################
# Get ready to start
#########################
iteration = infos['iter']
epoch = infos['epoch']
# For back compatibility
if 'iterators' in infos:
infos['loader_state_dict'] = {
split: {
'index_list': infos['split_ix'][split],
'iter_counter': infos['iterators'][split]
}
for split in ['train', 'val', 'test']
}
loader.load_state_dict(infos['loader_state_dict'])
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
if opt.noamopt:
optimizer._step = iteration
# flag indicating finish of an epoch
# Always set to True at the beginning to initialize the lr or etc.
epoch_done = True
# Assure in training mode
dp_lw_model.train()
# Start training
try:
while True:
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer,
opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
# If start structure loss training
if opt.structure_after != -1 and epoch >= opt.structure_after:
struc_flag = True
init_scorer(opt.cached_tokens)
else:
struc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
model_out = dp_lw_model(fc_feats, att_feats, labels, masks,
att_masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag,
struc_flag)
loss = model_out['loss'].mean()
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if struc_flag:
print(
"iter {} (epoch {}), train_loss = {:.3f}, lm_loss = {:.3f}, struc_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, model_out['lm_loss'].mean().item(),
model_out['struc_loss'].mean().item(), end - start))
elif not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
tb_summary_writer.add_scalar('train_loss', train_loss,
iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
tb_summary_writer.add_scalar('learning_rate', opt.current_lr,
iteration)
tb_summary_writer.add_scalar('scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
tb_summary_writer.add_scalar('avg_reward',
model_out['reward'].mean(),
iteration)
elif struc_flag:
tb_summary_writer.add_scalar(
'lm_loss', model_out['lm_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'struc_loss', model_out['struc_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'reward', model_out['reward'].mean().item(), iteration)
histories['loss_history'][
iteration] = train_loss if not sc_flag else model_out[
'reward'].mean()
histories['lr_history'][iteration] = opt.current_lr
histories['ss_prob_history'][iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['loader_state_dict'] = loader.state_dict()
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if lang_stats is not None:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
tb_summary_writer.add_scalar('validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
tb_summary_writer.add_scalar(k, v, iteration)
histories['val_result_history'][iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscellaneous information
infos['best_val_score'] = best_val_score
utils.save_checkpoint(opt, model, infos, optimizer, histories)
if opt.save_history_ckpt:
utils.save_checkpoint(opt,
model,
infos,
optimizer,
append=str(iteration))
if best_flag:
utils.save_checkpoint(opt,
model,
infos,
optimizer,
append='best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
utils.save_checkpoint(opt, model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
print("=================Training Information==============")
print("start from {}".format(opt.start_from))
print("box from {}".format(opt.input_box_dir))
print("input json {}".format(opt.input_json))
print("attributes from {}".format(opt.input_att_dir))
print("features from {}".format(opt.input_fc_dir))
print("batch size ={}".format(opt.batch_size))
print("#GPU={}".format(torch.cuda.device_count()))
# Deal with feature things before anything
opt.use_fc, opt.use_att = utils.if_use_feat(opt.caption_model)
if opt.use_box:
opt.att_feat_size = opt.att_feat_size + 5
acc_steps = getattr(opt, 'acc_steps', 1)
name_append = opt.name_append
if len(name_append) > 0 and name_append[0] != '-':
name_append = '_' + name_append
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
opt.write_summary = write_summary
if opt.write_summary:
print("write summary to {}".format(opt.checkpoint_path))
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
infors_path = os.path.join(opt.start_from,
'infos' + name_append + '.pkl')
print("Load model information {}".format(infors_path))
with open(infors_path, 'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
histories_path = os.path.join(opt.start_from,
'histories_' + name_append + '.pkl')
if os.path.isfile(histories_path):
with open(histories_path, 'rb') as f:
histories = utils.pickle_load(f)
else: # start from scratch
print("Initialize training process from all begining")
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
# sanity check for the saved model name has a correct index
if opt.name_append.isdigit() and int(opt.name_append) < 100:
assert int(
opt.name_append
) == epoch, "dismatch in the model index and the real epoch number"
epoch += 1
print(
"==================start from {} epoch================".format(epoch))
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
# pdb.set_trace()
loader.iterators = infos.get('iterators', loader.iterators)
start_Img_idx = loader.iterators['train']
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.vocab = loader.get_vocab()
model = models.setup(opt).cuda()
del opt.vocab
dp_model = torch.nn.DataParallel(model)
lw_model = LossWrapper(model, opt) # wrap loss into model
dp_lw_model = torch.nn.DataParallel(lw_model)
epoch_done = True
# Assure in training mode
dp_lw_model.train()
if opt.noamopt:
assert opt.caption_model in [
'transformer', 'aoa'
], 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None:
optimizer_path = os.path.join(opt.start_from,
'optimizer' + name_append + '.pth')
if os.path.isfile(optimizer_path):
print("Loading optimizer............")
optimizer.load_state_dict(torch.load(optimizer_path))
def save_checkpoint(model, infos, optimizer, histories=None, append=''):
if len(append) > 0:
append = '_' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'model%s.pth' % (append))
torch.save(model.state_dict(), checkpoint_path)
print("Save model state to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer%s.pth' % (append))
torch.save(optimizer.state_dict(), optimizer_path)
print("Save model optimizer to {}".format(optimizer_path))
with open(
os.path.join(opt.checkpoint_path,
'infos' + '%s.pkl' % (append)), 'wb') as f:
utils.pickle_dump(infos, f)
print("Save training information to {}".format(
os.path.join(opt.checkpoint_path,
'infos' + '%s.pkl' % (append))))
if histories:
with open(
os.path.join(opt.checkpoint_path,
'histories_' + '%s.pkl' % (append)),
'wb') as f:
utils.pickle_dump(histories, f)
print("Save training historyes to {}".format(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '%s.pkl' % (append))))
try:
while True:
# pdb.set_trace()
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer,
opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
print("{}th Epoch Training starts now!".format(epoch))
with tqdm(total=len(loader.split_ix['train']),
initial=start_Img_idx) as pbar:
for i in range(start_Img_idx, len(loader.split_ix['train']),
opt.batch_size):
# import ipdb; ipdb.set_trace()
start = time.time()
if (opt.use_warmup
== 1) and (iteration < opt.noamopt_warmup):
opt.current_lr = opt.learning_rate * (
iteration + 1) / opt.noamopt_warmup
utils.set_lr(optimizer, opt.current_lr)
# Load data from train split (0)
data = loader.get_batch('train')
# print('Read data:', time.time() - start)
if (iteration % acc_steps == 0):
optimizer.zero_grad()
torch.cuda.synchronize()
start = time.time()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
model_out = dp_lw_model(fc_feats, att_feats, labels, masks,
att_masks, data['gts'],
torch.arange(0, len(data['gts'])),
sc_flag)
loss = model_out['loss'].mean()
loss_sp = loss / acc_steps
loss_sp.backward()
if ((iteration + 1) % acc_steps == 0):
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
torch.cuda.synchronize()
train_loss = loss.item()
end = time.time()
# if not sc_flag:
# print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}"
# .format(iteration, epoch, train_loss, end - start))
# else:
# print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}"
# .format(iteration, epoch, model_out['reward'].mean(), end - start))
if not sc_flag:
pbar.set_description(
"iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}"
.format(iteration, epoch, train_loss, end - start))
else:
pbar.set_description(
"iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}"
.format(iteration, epoch,
model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
pbar.update(opt.batch_size)
if data['bounds']['wrapped']:
# save after each epoch
save_checkpoint(model,
infos,
optimizer,
append=str(epoch))
epoch += 1
# infos['epoch'] = epoch
epoch_done = True
# Write validation result into summary
if (iteration % opt.losses_log_every
== 0) and opt.write_summary:
add_summary_value(tb_summary_writer, 'loss/train_loss',
train_loss, iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer,
'hyperparam/learning_rate',
opt.current_lr, iteration)
add_summary_value(
tb_summary_writer,
'hyperparam/scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
model_out['reward'].mean(),
iteration)
loss_history[
iteration] = train_loss if not sc_flag else model_out[
'reward'].mean()
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
# make evaluation on validation set, and save model
# TODO modify it to evaluate by each epoch
# ipdb.set_trace()
if (iteration % opt.save_checkpoint_every
== 0) and eval_ and epoch > 20:
model_path = os.path.join(
opt.checkpoint_path,
'model_itr%s.pth' % (iteration))
eval_kwargs = {
'split': 'val',
'dataset': opt.input_json,
'model': model_path
}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
if opt.write_summary:
add_summary_value(tb_summary_writer,
'loss/validation loss', val_loss,
iteration)
if lang_stats is not None:
bleu_dict = {}
for k, v in lang_stats.items():
if 'Bleu' in k:
bleu_dict[k] = v
if len(bleu_dict) > 0:
tb_summary_writer.add_scalars(
'val/Bleu', bleu_dict, epoch)
for k, v in lang_stats.items():
if 'Bleu' not in k:
add_summary_value(
tb_summary_writer, 'val/' + k, v,
iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
# save_checkpoint(model, infos, optimizer, histories, append=str(iteration))
save_checkpoint(model, infos, optimizer, histories)
# if opt.save_history_ckpt:
# save_checkpoint(model, infos, optimizer, append=str(iteration))
if best_flag:
save_checkpoint(model,
infos,
optimizer,
append='best')
print(
"update best model at {} iteration--{} epoch".
format(iteration, epoch))
start_Img_idx = 0
# if epoch_done: # go through the set, start a new epoch loop
# break
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
print("epoch {} break all".format(epoch))
save_checkpoint(model, infos, optimizer)
tb_summary_writer.close()
print("============{} Training Done !==============".format(
'Refine' if opt.use_test or opt.use_val else ''))
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, infos, optimizer, append='_interrupt')
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
################################
# Build dataloader
################################
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
##########################
# Initialize infos
##########################
infos = {
'iter': 0,
'epoch': 0,
'loader_state_dict': None,
'vocab': loader.get_vocab(),
}
# Load old infos(if there is) and check if models are compatible
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'),
'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert getattr(saved_model_opt, checkme) == getattr(
opt, checkme
), "Command line argument and saved model disagree on '%s' " % checkme
infos['opt'] = opt
#########################
# Build logger
#########################
# naive dict logger
histories = defaultdict(dict)
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'),
'rb') as f:
histories.update(utils.pickle_load(f))
# tensorboard logger
tb_summary_writer = SummaryWriter(opt.checkpoint_path)
##########################
# Build model
##########################
USE_CUDA = torch.cuda.is_available()
device = torch.device("cuda:0" if USE_CUDA else "cpu")
opt.vocab = loader.get_vocab()
model = models.setup(opt).cuda()
del opt.vocab
# Load pretrained weights:
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'model.pth')):
model.load_state_dict(
torch.load(os.path.join(opt.start_from, 'model.pth')))
# Wrap generation model with loss function(used for training)
# This allows loss function computed separately on each machine
lw_model = LossWrapper(model, opt)
# Wrap with dataparallel
dp_model = torch.nn.DataParallel(model)
dp_lw_model = torch.nn.DataParallel(lw_model)
dp_model.to(device)
dp_lw_model.to(device)
##########################
# Build optimizer
##########################
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
#########################
# Get ready to start
#########################
iteration = infos['iter']
epoch = infos['epoch']
# For back compatibility
if 'iterators' in infos:
infos['loader_state_dict'] = {
split: {
'index_list': infos['split_ix'][split],
'iter_counter': infos['iterators'][split]
}
for split in ['train', 'val', 'test']
}
loader.load_state_dict(infos['loader_state_dict'])
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# flag indicating finish of an epoch
# Always set to True at the beginning to initialize the lr or etc.
epoch_done = True
# Assure in training mode
dp_lw_model.train()
# Start training
try:
while True:
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
if epoch_done:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
# If start structure loss training
if opt.structure_after != -1 and epoch >= opt.structure_after:
struc_flag = True
init_scorer(opt.cached_tokens)
else:
struc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
torch.cuda.synchronize()
start = time.time()
tmp = [
data['semantic_feat'], data["semantic1_feat"],
data['att_feats'], data["att1_feats"], data["box_feat"],
data["box1_feat"], data['labels'], data['masks']
]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
semantic_feat, semantic1_feat, att_feats, att1_feats, box_feat, box1_feat, labels, masks = tmp
optimizer.zero_grad()
model_out = dp_lw_model(semantic_feat, semantic1_feat, att_feats,
att1_feats, box_feat, box1_feat, labels,
masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag,
struc_flag)
loss = model_out['loss'].mean()
loss.backward()
if opt.grad_clip_value != 0:
getattr(torch.nn.utils, 'clip_grad_%s_' %
(opt.grad_clip_mode))(model.parameters(),
opt.grad_clip_value)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if struc_flag and iteration % opt.losses_log_every == 0:
print("iter {} (epoch {}), train_loss = {:.3f}, lm_loss = {:.3f}, struc_loss = {:.3f}, cider = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, model_out['lm_loss'].mean().item(), model_out['struc_loss'].mean().item(), model_out['cider'].mean().item(), end - start))
elif not sc_flag and iteration % opt.losses_log_every == 0:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
if iteration % opt.losses_log_every == 0:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
tb_summary_writer.add_scalar('train_loss', train_loss,
iteration)
tb_summary_writer.add_scalar('learning_rate', opt.current_lr,
iteration)
tb_summary_writer.add_scalar('scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
tb_summary_writer.add_scalar('avg_reward',
model_out['reward'].mean(),
iteration)
elif struc_flag:
tb_summary_writer.add_scalar(
'lm_loss', model_out['lm_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'struc_loss', model_out['struc_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'reward', model_out['reward'].mean().item(), iteration)
tb_summary_writer.add_scalar(
'reward_var', model_out['reward'].var(1).mean(),
iteration)
histories['loss_history'][
iteration] = train_loss if not sc_flag else model_out[
'reward'].mean()
histories['lr_history'][iteration] = opt.current_lr
histories['ss_prob_history'][iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['loader_state_dict'] = loader.state_dict()
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0 and not opt.save_every_epoch) or \
(epoch_done and opt.save_every_epoch):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
# Write validation result into summary
tb_summary_writer.add_scalar('validation loss', val_loss,
iteration)
histories['val_result_history'][iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats
else:
current_score = -val_loss
print("val_loss = {:.3f}".format(val_loss))
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
utils.save_checkpoint(opt, model, infos, optimizer, histories)
if opt.save_history_ckpt:
utils.save_checkpoint(
opt,
model,
infos,
optimizer,
append=str(epoch)
if opt.save_every_epoch else str(iteration))
if best_flag:
utils.save_checkpoint(opt,
model,
infos,
optimizer,
append='best')
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
utils.save_checkpoint(opt, model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
torch.cuda.set_device(opt.device)
# opt.use_att = utils.if_use_att(opt.caption_model)
opt.use_att = True
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
print(opt.seq_length)
print(opt.checkpoint_path)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos_'+opt.id+'.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same=["caption_model", "rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl')):
with open(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
critic_loss_history = histories.get('critic_loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
variance_history = histories.get('variance_history', {})
time_history = histories.get('time_history', {})
pseudo_num_history = histories.get('pseudo_num_history', {})
pseudo_num_length_history = histories.get('pseudo_num_length_history', {})
pseudo_num_batch_history = histories.get('pseudo_num_batch_history', {})
sum_logits_history = histories.get('sum_logits_history', {})
reward_main_history = histories.get('reward_main_history', {})
first_order = histories.get('first_order_history', np.zeros(1))
second_order = histories.get('second_order_history', np.zeros(1))
first_order = torch.from_numpy(first_order).float().cuda()
second_order = torch.from_numpy(second_order).float().cuda()
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
dp_model = model
target_actor = models.setup(opt).cuda()
####################### Critic pretrain #####################################################################
##### Critic with state as input
# if opt.critic_model == 'state_critic':
# critic_model = CriticModel(opt)
# else:
critic_model = AttCriticModel(opt)
target_critic = AttCriticModel(opt)
if vars(opt).get('start_from_critic', None) is not None and True:
# check if all necessary files exist
assert os.path.isdir(opt.start_from_critic), " %s must be a a path" % opt.start_from_critic
print(os.path.join(opt.start_from_critic, opt.critic_model + '_model.pth'))
critic_model.load_state_dict(torch.load(os.path.join(opt.start_from_critic, opt.critic_model + '_model.pth')))
target_critic.load_state_dict(torch.load(os.path.join(opt.start_from_critic, opt.critic_model + '_model.pth')))
critic_model = critic_model.cuda()
target_critic = target_critic.cuda()
critic_optimizer = utils.build_optimizer(critic_model.parameters(), opt)
dp_model.eval()
critic_iter = 0
init_scorer(opt.cached_tokens)
critic_model.train()
error_sum = 0
loss_vector_sum = 0
while opt.pretrain_critic == 1:
if critic_iter > opt.pretrain_critic_steps:
print('****************Finished critic training!')
break
data = loader.get_batch('train')
torch.cuda.synchronize()
start = time.time()
tmp = [data['fc_feats'], data['att_feats'], data['labels'], data['masks'], data['att_masks']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
critic_model.train()
critic_optimizer.zero_grad()
# assert opt.critic_model == 'att_critic_vocab'
# crit_loss, reward, std = critic_loss_fun(fc_feats, att_feats, att_masks, dp_model, critic_model, opt, data)
crit_loss, reward, std = target_critic_loss_fun_mask(fc_feats, att_feats, att_masks, dp_model, critic_model, opt, data, target_critic, target_actor)
crit_loss.backward()
critic_optimizer.step()
#TODO update target.
for cp, tp in zip(critic_model.parameters(), target_critic.parameters()):
tp.data = tp.data + opt.gamma_critic * (cp.data - tp.data)
crit_train_loss = crit_loss.item()
torch.cuda.synchronize()
end = time.time()
error_sum += crit_train_loss**0.5-std
if (critic_iter % opt.losses_log_every == 0):
print("iter {} , crit_train_loss = {:.3f}, difference = {:.3f}, difference_sum = {:.3f}, time/batch = {:.3f}" \
.format(critic_iter, crit_train_loss**0.5, crit_train_loss**0.5-std, error_sum, end - start))
print(opt.checkpoint_path)
opt.importance_sampling = 1
critic_model.eval()
_, _, _, _ = get_rf_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader, critic_model, test_critic=True)
critic_iter += 1
# make evaluation on validation set, and save model
if (critic_iter % opt.save_checkpoint_every == 0):
if not os.path.isdir(opt.checkpoint_path):
os.mkdir(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, opt.critic_model + '_model.pth')
torch.save(critic_model.state_dict(), checkpoint_path)
######################### Actor-critic Training #####################################################################
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(os.path.join(opt.start_from,"optimizer.pth")):
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
# first_order = 0
# second_order = 0
while True:
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac, opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
data = loader.get_batch('train')
# if data['bounds']['it_pos_now'] > 5000:
# loader.reset_iterator('train')
# continue
dp_model.train()
critic_model.eval()
torch.cuda.synchronize()
start = time.time()
gen_result = None
tmp = [data['fc_feats'], data['att_feats'], data['labels'], data['masks'], data['att_masks']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks), labels[:,1:], masks[:,1:])
else:
if opt.rl_type == 'sc':
gen_result, sample_logprobs = dp_model(fc_feats, att_feats, att_masks, opt={'sample_max':0}, mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, att_feats, att_masks, data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda())
pseudo_num = 0
pseudo_num_length = 0
elif opt.rl_type == 'reinforce':
gen_result, sample_logprobs = dp_model(fc_feats, att_feats, att_masks, opt={'sample_max':0}, mode='sample')
reward = get_reward(data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda())
pseudo_num_length = 0
pseudo_num = 0
elif opt.rl_type == 'arsm':
loss, pseudo_num, pseudo_num_length, pseudo_num_batch, rewards_main, sum_logits = get_arm_loss_daniel(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
#print(loss)
reward = np.zeros([2,2])
elif opt.rl_type == 'rf4':
loss,_,_,_ = get_rf_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
# print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'importance_sampling':
opt.importance_sampling = 1
loss, gen_result, reward, sample_logprobs_total = get_rf_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
reward = np.repeat(reward[:, np.newaxis], gen_result.shape[1], 1)
std = np.std(reward)
elif opt.rl_type == 'importance_sampling_critic':
opt.importance_sampling = 1
loss, gen_result, reward, sample_logprobs_total = get_rf_loss(target_actor, fc_feats, att_feats, att_masks, data, opt, loader, target_critic)
reward = np.repeat(reward[:, np.newaxis], gen_result.shape[1], 1)
std = np.std(reward)
elif opt.rl_type == 'ar':
loss = get_ar_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
reward = np.zeros([2,2])
elif opt.rl_type == 'mct':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(dp_model, fc_feats, att_feats,
att_masks, data,
opt, loader)
reward = get_reward(data, gen_result, opt)
pseudo_num = 0
pseudo_num_length = 0
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
final_reward = torch.cat([mct_baseline[:, 1:], reward_cuda[:, 0:1]], 1)
final_reward = final_reward - torch.mean(final_reward)
if opt.arm_step_sample == 'greedy':
sample_logprobs = sample_logprobs * probs
loss = rl_crit(sample_logprobs, gen_result.data, final_reward)
elif opt.rl_type == 'mct_sc':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(dp_model, fc_feats, att_feats,
att_masks, data,
opt, loader)
reward = get_reward(data, gen_result, opt)
pseudo_num = 0
pseudo_num_length = 0
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
final_reward = torch.cat([mct_baseline[:, 1:], reward_cuda[:, 0:1]], 1)
gen_result_sc, sample_logprobs_sc = dp_model(fc_feats, att_feats, att_masks, opt={'sample_max': 1},
mode='sample')
reward = get_reward(data, gen_result_sc, opt)
final_reward = final_reward - torch.from_numpy(reward).float().cuda()
loss = rl_crit(sample_logprobs, gen_result.data, final_reward)
elif opt.rl_type == 'mct_critic':
#TODO change the critic to attention
if opt.critic_model == 'state_critic':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(dp_model, fc_feats, att_feats,
att_masks, data,
opt, loader)
gen_result_pad = torch.cat(
[gen_result.new_zeros(gen_result.size(0), 1, dtype=torch.long), gen_result], 1)
critic_value = critic_model(gen_result_pad, fc_feats, att_feats, True, opt, att_masks).squeeze(2)
reward, std = get_reward(data, gen_result, opt, critic=True)
pseudo_num = 0
pseudo_num_length = 0
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
final_reward = torch.cat([mct_baseline[:, 1:], reward_cuda[:, 0:1]], 1)
print(critic_value.shape)
loss = rl_crit(sample_logprobs, gen_result.data, final_reward - critic_value)
critic_value, gen_result, sample_logprobs = critic_model(dp_model, fc_feats, att_feats, opt, att_masks)
reward, std = get_reward(data, gen_result, opt, critic=True)
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda() - critic_value[:,:-1].data)
elif opt.critic_model == 'att_critic':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(dp_model, fc_feats, att_feats,
att_masks, data,
opt, loader)
gen_result_pad = torch.cat(
[gen_result.new_zeros(gen_result.size(0), 1, dtype=torch.long), gen_result], 1)
critic_value = critic_model(gen_result_pad, fc_feats, att_feats, True, opt, att_masks).squeeze(2)
reward, std = get_reward(data, gen_result, opt, critic=True)
pseudo_num = 0
pseudo_num_length = 0
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
final_reward = torch.cat([mct_baseline[:, 1:], reward_cuda[:, 0:1]], 1)
print(critic_value.shape)
loss = rl_crit(sample_logprobs, gen_result.data, final_reward - critic_value)
elif opt.rl_type =='mct_baseline':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(dp_model, fc_feats, att_feats, att_masks, data,
opt, loader)
reward = get_reward(data, gen_result, opt)
pseudo_num = 0
pseudo_num_length = 0
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
if opt.arm_step_sample == 'greedy':
sample_logprobs = sample_logprobs * probs
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda() - mct_baseline)
elif opt.rl_type == 'arsm_baseline':
opt.arm_as_baseline = 1
opt.rf_demean = 0
gen_result, sample_logprobs, probs, arm_baseline = get_arm_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
reward = get_reward(data, gen_result, opt)
reward_cuda = torch.from_numpy(reward).float().cuda()
arm_baseline[arm_baseline < 0] = reward_cuda[arm_baseline < 0]
if opt.arm_step_sample == 'greedy' and False:
sample_logprobs = sample_logprobs * probs
loss = rl_crit(sample_logprobs, gen_result.data, reward_cuda - arm_baseline)
elif opt.rl_type == 'ars_indicator':
opt.arm_as_baseline = 1
opt.rf_demean = 0
gen_result, sample_logprobs, probs, arm_baseline = get_arm_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader)
reward = get_self_critical_reward(dp_model, fc_feats, att_feats, att_masks, data, gen_result, opt)
reward_cuda = torch.from_numpy(reward).float().cuda()
loss = rl_crit(sample_logprobs, gen_result.data, reward_cuda * arm_baseline)
elif opt.rl_type == 'arsm_baseline_critic':
opt.arm_as_baseline = 1
opt.rf_demean = 0
gen_result, sample_logprobs, probs, arm_baseline = get_arm_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader, critic_model)
reward, std = get_reward(data, gen_result, opt, critic=True)
if opt.arm_step_sample == 'greedy':
sample_logprobs = sample_logprobs * probs
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda() - arm_baseline)
elif opt.rl_type == 'arsm_critic':
#print(opt.critic_model)
tic = time.time()
loss = get_arm_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader, critic_model)
#print('arm_loss time', str(time.time()-tic))
reward = np.zeros([2, 2])
elif opt.rl_type == 'critic_vocab_sum':
assert opt.critic_model == 'att_critic_vocab'
tic = time.time()
gen_result, sample_logprobs_total = dp_model(fc_feats, att_feats, att_masks, opt={'sample_max': 0}, total_probs=True,
mode='sample') #batch, seq, vocab
#print('generation time', time.time()-tic)
gen_result_pad = torch.cat(
[gen_result.new_zeros(gen_result.size(0), 1, dtype=torch.long), gen_result], 1)
tic = time.time()
critic_value = critic_model(gen_result_pad, fc_feats, att_feats, True, opt, att_masks) #batch, seq, vocab
#print('critic time', time.time() - tic)
probs = torch.sum(F.softmax(sample_logprobs_total, 2) * critic_value.detach(), 2)
mask = (gen_result > 0).float()
mask = torch.cat([mask.new(mask.size(0), 1).fill_(1), mask[:, :-1]], 1)
loss = -torch.sum(probs * mask) / torch.sum(mask)
reward = np.zeros([2, 2])
elif opt.rl_type == 'reinforce_critic':
#TODO change the critic to attention
if opt.critic_model == 'state_critic':
critic_value, gen_result, sample_logprobs = critic_model(dp_model, fc_feats, att_feats, opt, att_masks)
reward, std = get_reward(data, gen_result, opt, critic=True)
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda() - critic_value[:,:-1].data)
elif opt.critic_model == 'att_critic':
gen_result, sample_logprobs = dp_model(fc_feats, att_feats, att_masks, opt={'sample_max': 0},
mode='sample')
gen_result_pad = torch.cat(
[gen_result.new_zeros(gen_result.size(0), 1, dtype=torch.long), gen_result], 1)
critic_value = critic_model(gen_result_pad, fc_feats, att_feats, True, opt, att_masks).squeeze(2)
reward, std = get_reward(data, gen_result, opt, critic=True)
loss = rl_crit(sample_logprobs, gen_result.data, torch.from_numpy(reward).float().cuda() - critic_value.data)
if opt.mle_weights != 0:
loss += opt.mle_weights * crit(dp_model(fc_feats, att_feats, labels, att_masks), labels[:, 1:], masks[:, 1:])
#TODO make sure all sampling replaced by greedy for critic
#### update the actor
loss.backward()
# with open(os.path.join(opt.checkpoint_path, 'best_embed.pkl'), 'wb') as f:
# cPickle.dump(list(dp_model.embed.parameters())[0].data.cpu().numpy(), f)
# with open(os.path.join(opt.checkpoint_path, 'best_logit.pkl'), 'wb') as f:
# cPickle.dump(list(dp_model.logit.parameters())[0].data.cpu().numpy(), f)
## compute variance
gradient = torch.zeros([0]).cuda()
for i in model.parameters():
gradient = torch.cat((gradient, i.grad.view(-1)), 0)
first_order = 0.9999 * first_order + 0.0001 * gradient
second_order = 0.9999 * second_order + 0.0001 * gradient.pow(2)
# print(torch.max(torch.abs(gradient)))
variance = torch.mean(torch.abs(second_order - first_order.pow(2))).item()
if opt.rl_type != 'arsm' or not sc_flag:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
# ### update the critic
if 'critic' in opt.rl_type:
dp_model.eval()
critic_model.train()
utils.set_lr(critic_optimizer, opt.critic_learning_rate)
critic_optimizer.zero_grad()
#assert opt.critic_model == 'att_critic_vocab'
crit_loss, reward, std = target_critic_loss_fun_mask(fc_feats, att_feats, att_masks, dp_model, critic_model, opt,
data, target_critic, target_actor, gen_result=gen_result, sample_logprobs_total=sample_logprobs_total, reward=reward)
crit_loss.backward()
critic_optimizer.step()
for cp, tp in zip(critic_model.parameters(), target_critic.parameters()):
tp.data = tp.data + opt.gamma_critic * (cp.data - tp.data)
for cp, tp in zip(dp_model.parameters(), target_actor.parameters()):
tp.data = tp.data + opt.gamma_actor * (cp.data - tp.data)
crit_train_loss = crit_loss.item()
error_sum += crit_train_loss ** 0.5 - std
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if (iteration % opt.losses_log_every == 0):
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
print(opt.checkpoint_path)
elif 'critic' in opt.rl_type:
print(
"iter {} , crit_train_loss = {:.3f}, difference = {:.3f}, difference_sum = {:.3f},variance = {:g}, time/batch = {:.3f}" \
.format(iteration, crit_train_loss ** 0.5, crit_train_loss ** 0.5 - std, error_sum, variance, end - start))
print(opt.checkpoint_path)
critic_model.eval()
_, _, _, _ = get_rf_loss(dp_model, fc_feats, att_feats, att_masks, data, opt, loader, critic_model, test_critic=True)
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, variance = {:g}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:, 0]), variance, end - start))
print("pseudo num: ", pseudo_num)
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration)
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward', np.mean(reward), iteration)
add_summary_value(tb_summary_writer, 'variance', variance, iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(reward)
critic_loss_history[iteration] = crit_train_loss if 'critic' in opt.rl_type else 0
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
variance_history[iteration] = variance
pseudo_num_history[iteration] = pseudo_num
reward_main_history[iteration] = rewards_main
#print(pseudo_num_length)
#print(type(pseudo_num_length).__module__)
if type(pseudo_num_length).__module__ != 'torch':
print('not right')
pseudo_num_length_history[iteration] = pseudo_num_length
pseudo_num_batch_history[iteration] = pseudo_num_batch
sum_logits_history[iteration] = sum_logits
else:
pseudo_num_length_history[iteration] = pseudo_num_length.data.cpu().numpy()
pseudo_num_batch_history[iteration] = pseudo_num_batch.data.cpu().numpy()
sum_logits_history[iteration] = sum_logits.data.cpu().numpy()
time_history[iteration] = end - start
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val',
'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration)
if lang_stats is not None:
for k,v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = - val_loss
best_flag = False
if True: # if true
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
if not os.path.isdir(opt.checkpoint_path):
os.mkdir(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, opt.critic_model + '_model.pth')
torch.save(critic_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['critic_loss_history'] = critic_loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
histories['variance_history'] = variance_history
histories['pseudo_num_history'] = pseudo_num_history
histories['pseudo_num_length_history'] = pseudo_num_length_history
histories['pseudo_num_batch_history'] = pseudo_num_batch_history
histories['sum_logits_history'] = sum_logits_history
histories['reward_main_history'] = reward_main_history
histories['time'] = time_history
histories['first_order_history'] = first_order.data.cpu().numpy()
histories['second_order_history'] = second_order.data.cpu().numpy()
# histories['variance'] = 0
with open(os.path.join(opt.checkpoint_path, 'infos_'+opt.id+'.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(os.path.join(opt.checkpoint_path, 'histories_'+opt.id+'.pkl'), 'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path, 'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, 'infos_'+opt.id+'-best.pkl'), 'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# opt.use_att = utils.if_use_att(opt.caption_model)
opt.use_att = True
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
print(opt.checkpoint_path)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
critic_loss_history = histories.get('critic_loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
variance_history = histories.get('variance_history', {})
time_history = histories.get('time_history', {})
pseudo_num_history = histories.get('pseudo_num_history', {})
pseudo_num_depth_history = histories.get('pseudo_num_depth_history', {})
pseudo_num_length_history = histories.get('pseudo_num_length_history', {})
pseudo_num_batch_history = histories.get('pseudo_num_batch_history', {})
reward_batch_history = histories.get('reward_batch_history', {})
entropy_batch_history = histories.get('entropy_batch_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
dp_model = model
######################### Actor-critic Training #####################################################################
update_lr_flag = True
# Assure in training mode
dp_model.train()
#TODO: change this to a flag
crit = utils.LanguageModelCriterion_binary()
rl_crit = utils.RewardCriterion_binary()
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
first_order = 0
second_order = 0
while True:
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
data = loader.get_batch('train')
if data['bounds']['it_pos_now'] > 10000:
loader.reset_iterator('train')
continue
dp_model.train()
torch.cuda.synchronize()
start = time.time()
gen_result = None
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['masks'],
data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels,
att_masks), labels[:, 1:], masks[:, 1:],
dp_model.depth, dp_model.vocab2code, dp_model.phi_list,
dp_model.cluster_size)
else:
if opt.rl_type == 'sc':
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks, data,
gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda(),
dp_model.depth)
elif opt.rl_type == 'reinforce':
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_reward(data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda(),
dp_model.depth)
elif opt.rl_type == 'arm':
loss, pseudo_num, pseudo_num_depth, pseudo_num_length, pseudo_num_batch, reward_batch, entropy_batch = dp_model.get_arm_loss_binary_fast(
fc_feats, att_feats, att_masks, opt, data, loader)
#print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'rf4':
loss, _, _, _ = get_rf_loss(dp_model, fc_feats, att_feats,
att_masks, data, opt, loader)
# print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'ar':
loss = get_ar_loss(dp_model, fc_feats, att_feats, att_masks,
data, opt, loader)
reward = np.zeros([2, 2])
elif opt.rl_type == 'mct_baseline':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(
dp_model, fc_feats, att_feats, att_masks, data, opt,
loader)
reward = get_reward(data, gen_result, opt)
reward_cuda = torch.from_numpy(reward).float().cuda()
mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
if opt.arm_step_sample == 'greedy':
sample_logprobs = sample_logprobs * probs
loss = rl_crit(
sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda() - mct_baseline)
elif opt.rl_type == 'arsm_baseline':
opt.arm_as_baseline = 1
opt.rf_demean = 0
gen_result, sample_logprobs, probs, arm_baseline = get_arm_loss(
dp_model, fc_feats, att_feats, att_masks, data, opt,
loader)
reward = get_reward(data, gen_result, opt)
reward_cuda = torch.from_numpy(reward).float().cuda()
arm_baseline[arm_baseline < 0] = reward_cuda[arm_baseline < 0]
if opt.arm_step_sample == 'greedy' and False:
sample_logprobs = sample_logprobs * probs
loss = rl_crit(sample_logprobs, gen_result.data,
reward_cuda - arm_baseline)
elif opt.rl_type == 'ars_indicator':
opt.arm_as_baseline = 1
opt.rf_demean = 0
gen_result, sample_logprobs, probs, arm_baseline = get_arm_loss(
dp_model, fc_feats, att_feats, att_masks, data, opt,
loader)
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks, data,
gen_result, opt)
reward_cuda = torch.from_numpy(reward).float().cuda()
loss = rl_crit(sample_logprobs, gen_result.data,
reward_cuda * arm_baseline)
if opt.mle_weights != 0:
loss += opt.mle_weights * crit(
dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
#TODO make sure all sampling replaced by greedy for critic
#### update the actor
loss.backward()
# with open(os.path.join(opt.checkpoint_path, 'embeddings.pkl'), 'wb') as f:
# cPickle.dump(list(dp_model.embed.parameters())[0].data.cpu().numpy(), f)
## compute variance
gradient = torch.zeros([0]).cuda()
for i in model.parameters():
gradient = torch.cat((gradient, i.grad.view(-1)), 0)
first_order = 0.999 * first_order + 0.001 * gradient
second_order = 0.999 * second_order + 0.001 * gradient.pow(2)
# print(torch.max(torch.abs(gradient)))
variance = torch.mean(torch.abs(second_order -
first_order.pow(2))).item()
if opt.rl_type != 'arsm' or not sc_flag:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
# ### update the critic
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if (iteration % opt.losses_log_every == 0):
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
print(opt.checkpoint_path)
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, variance = {:g}, time/batch = {:.3f}, pseudo num = {:.3f}, " \
.format(iteration, epoch, np.mean(reward[:, 0]), variance, end - start, pseudo_num))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward), iteration)
add_summary_value(tb_summary_writer, 'variance', variance,
iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward)
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
variance_history[iteration] = variance
time_history[iteration] = end - start
pseudo_num_history[iteration] = pseudo_num.item()
pseudo_num_length_history[iteration] = pseudo_num_length.data.cpu(
).numpy()
pseudo_num_depth_history[iteration] = pseudo_num_depth.data.cpu(
).numpy()
pseudo_num_batch_history[iteration] = pseudo_num_batch.data.cpu(
).numpy()
reward_batch_history[iteration] = reward_batch
entropy_batch_history[iteration] = entropy_batch.data.cpu().numpy()
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils_binary.eval_split(
dp_model, crit, loader, eval_kwargs)
print('1')
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
print('2')
best_flag = False
if True: # if true
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
if not os.path.isdir(opt.checkpoint_path):
os.mkdir(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print('3')
checkpoint_path = os.path.join(opt.checkpoint_path,
opt.critic_model + '_model.pth')
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
print('4')
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['critic_loss_history'] = critic_loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
histories['variance_history'] = variance_history
histories['time'] = time_history
histories['pseudo_num_history'] = pseudo_num_history
histories[
'pseudo_num_length_history'] = pseudo_num_length_history
histories[
'pseudo_num_depth_history'] = pseudo_num_depth_history
histories[
'pseudo_num_batch_history'] = pseudo_num_batch_history
histories['reward_batch_history'] = reward_batch_history
histories['entropy_batch_history'] = entropy_batch_history
# histories['variance'] = 0
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'),
'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Load data
print('Loading dataset...')
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
loader.input_encoding_size = opt.input_encoding_size
BERT_features = None
if opt.cached_bert_features == "":
# Extract BERT features
print('Extracting pretrained BERT features...')
BERT_features = process_bert.extract_BERT_features(loader, opt)
with open(opt.data_path + 'BERT_features.pkl', 'wb') as f:
pickle.dump(BERT_features, f)
else:
# Load BERT tokenization results
print('Loading pretrained BERT features...')
with open(opt.data_path + 'BERT_features.pkl', 'rb') as f:
BERT_features = pickle.load(f)
bert_vocab_path = opt.data_path + 'bert-base-cased-vocab.txt'
opt.vocab_size = loader.update_bert_tokens(bert_vocab_path, BERT_features)
print('Vocabulary size: ' + str(opt.vocab_size))
# Load pretrained model, info file, histories file
infos = {}
histories = {}
if opt.start_from is not None:
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# Create model
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model)
dp_model.train()
# Loss function
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
# Optimizer and learning rate adjustment flag
optimizer = utils.build_optimizer(model.parameters(), opt)
update_lr_flag = True
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
# Training loop
while True:
# Update learning rate once per epoch
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
update_lr_flag = False
# Load data from train split (0)
start = time.time()
data = loader.get_batch('train')
data_time = time.time() - start
start = time.time()
# Unpack data
torch.cuda.synchronize()
tmp = [
data['bert_feats'], data['fc_feats'], data['att_feats'],
data['labels'], data['masks'], data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
bert_feats, fc_feats, att_feats, labels, masks, att_masks = tmp
bert_feats.requires_grad = False
# Forward pass and loss
optimizer.zero_grad()
outputs = dp_model(bert_feats, fc_feats, att_feats, labels, att_masks)
loss = crit(outputs, labels[:, 1:], masks[:, 1:])
# Backward pass
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
# Print
total_time = time.time() - start
if iteration % opt.print_freq == 1:
print("iter {} (epoch {}), train_loss = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, data_time, total_time))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Validate and save model
if (iteration % opt.save_checkpoint_every == 0):
# Evaluate model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
# Our metric is CIDEr if available, otherwise validation loss
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
# Save model in checkpoint path
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
# Save model to unique file if new best model
if best_flag:
model_fname = 'model-best-i{:05d}-score{:.4f}.pth'.format(
iteration, best_val_score)
infos_fname = 'model-best-i{:05d}-infos.pkl'.format(iteration)
checkpoint_path = os.path.join(opt.checkpoint_path,
model_fname)
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, infos_fname),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
opt.use_fc = utils.if_use_fc(opt.caption_model)
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
infos = load_info(opt)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = infos.get('val_result_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# Define and load model, optimizer, critics
decoder = setup(opt).train().cuda()
crit = utils.LanguageModelCriterion().cuda()
rl_crit = utils.RewardCriterion().cuda()
optimizer = utils.build_optimizer(decoder.parameters(), opt)
models = {'decoder': decoder}
optimizers = {'decoder': optimizer}
save_nets_structure(models, opt)
load_checkpoint(models, optimizers, opt)
epoch_done = True
sc_flag = False
while True:
if epoch_done:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
decoder.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
# 1. fetch a batch of data from train split
data = loader.get_batch('train')
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['masks'],
data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
sg_data = {
key: data['sg_data'][key] if data['sg_data'][key] is None else
torch.from_numpy(data['sg_data'][key]).cuda()
for key in data['sg_data']
}
# 2. Forward model and compute loss
torch.cuda.synchronize()
optimizer.zero_grad()
if not sc_flag:
out = decoder(sg_data, fc_feats, att_feats, labels, att_masks)
loss = crit(out, labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs, core_args = decoder(
sg_data,
fc_feats,
att_feats,
att_masks,
opt={
'sample_max': 0,
'return_core_args': True
},
mode='sample')
reward = get_self_critical_reward(decoder, core_args, sg_data,
fc_feats, att_feats, att_masks,
data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
# 3. Update model
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
# Update the iteration and epoch
iteration += 1
# Write the training loss summary
if (iteration % opt.log_loss_every == 0):
# logging log
logger.info("{} ({}), loss: {:.3f}".format(iteration, epoch,
train_loss))
tb.add_values('loss', {'train': train_loss}, iteration)
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Make evaluation and save checkpoint
if (opt.save_checkpoint_every > 0
and iteration % opt.save_checkpoint_every
== 0) or (opt.save_checkpoint_every == -1 and epoch_done):
# eval model
eval_kwargs = {
'split': 'val',
'dataset': opt.input_json,
'expand_features': False
}
eval_kwargs.update(vars(opt))
predictions, lang_stats = eval_utils.eval_split(
decoder, loader, eval_kwargs)
# log val results
if not lang_stats is None:
logger.info("Scores: {}".format(lang_stats))
tb.add_values('scores', lang_stats, epoch)
val_result_history[epoch] = {
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
current_score = 0 if lang_stats is None else lang_stats['CIDEr']
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
infos['val_result_history'] = val_result_history
save_checkpoint(models, optimizers, infos, best_flag, opt)
# Stop if reaching max epochs
if epoch > opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
training_mode = 0
optimizer_reset = 0
change_mode1 = 0
change_mode2 = 0
use_rela = getattr(opt, 'use_rela', 0)
if use_rela:
opt.rela_dict_size = loader.rela_dict_size
#need another parameter to control how to train the model
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(
os.path.join(
opt.checkpoint_path, 'infos_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')):
with open(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
if epoch >= opt.step2_train_after and epoch < opt.step3_train_after:
training_mode = 1
elif epoch >= opt.step3_train_after:
training_mode = 2
else:
training_mode = 0
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
#dp_model = torch.nn.DataParallel(model)
#dp_model = torch.nn.DataParallel(model, [0, 1])
dp_model = model
for name, param in model.named_parameters():
print(name)
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer_mem = optim.Adam([model.memory_cell],
opt.learning_rate,
(opt.optim_alpha, opt.optim_beta),
opt.optim_epsilon,
weight_decay=opt.weight_decay)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(
opt.checkpoint_path, 'optimizer' + opt.id +
format(int(opt.start_from), '04') + '.pth')):
optimizer.load_state_dict(
torch.load(
os.path.join(
opt.checkpoint_path, 'optimizer' + opt.id +
format(int(opt.start_from), '04') + '.pth')))
if (training_mode == 1 or training_mode == 2) and os.path.isfile(
os.path.join(
opt.checkpoint_path, 'optimizer_mem' + opt.id +
format(int(opt.start_from), '04') + '.pth')):
optimizer_mem.load_state_dict(
torch.load(
os.path.join(
opt.checkpoint_path, 'optimizer_mem' + opt.id +
format(int(opt.start_from), '04') + '.pth')))
optimizer.zero_grad()
optimizer_mem.zero_grad()
accumulate_iter = 0
reward = np.zeros([1, 1])
train_loss = 0
while True:
# if optimizer_reset == 1:
# print("++++++++++++++++++++++++++++++")
# print('reset optimizer')
# print("++++++++++++++++++++++++++++++")
# optimizer = utils.build_optimizer(model.parameters(), opt)
# optimizer_mem = optim.Adam([model.memory_cell], opt.learning_rate, (opt.optim_alpha, opt.optim_beta),
# opt.optim_epsilon,
# weight_decay=opt.weight_decay)
# optimizer_reset = 0
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch(opt.train_split)
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
if epoch >= opt.step2_train_after and epoch < opt.step3_train_after:
training_mode = 1
if change_mode1 == 0:
change_mode1 = 1
optimizer_reset = 1
elif epoch >= opt.step3_train_after:
training_mode = 2
if change_mode2 == 0:
change_mode2 = 1
optimizer_reset = 1
else:
training_mode = 0
fc_feats = None
att_feats = None
att_masks = None
ssg_data = None
rela_data = None
tmp = [data['fc_feats'], data['labels'], data['masks']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, labels, masks = tmp
tmp = [
data['att_feats'], data['att_masks'], data['rela_rela_matrix'],
data['rela_rela_masks'], data['rela_attr_matrix'],
data['rela_attr_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
att_feats, att_masks, rela_rela_matrix, rela_rela_masks, \
rela_attr_matrix, rela_attr_masks = tmp
rela_data = {}
rela_data['att_feats'] = att_feats
rela_data['att_masks'] = att_masks
rela_data['rela_matrix'] = rela_rela_matrix
rela_data['rela_masks'] = rela_rela_masks
rela_data['attr_matrix'] = rela_attr_matrix
rela_data['attr_masks'] = rela_attr_masks
tmp = [
data['ssg_rela_matrix'], data['ssg_rela_masks'], data['ssg_obj'],
data['ssg_obj_masks'], data['ssg_attr'], data['ssg_attr_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
ssg_rela_matrix, ssg_rela_masks, ssg_obj, ssg_obj_masks, ssg_attr, ssg_attr_masks = tmp
ssg_data = {}
ssg_data['ssg_rela_matrix'] = ssg_rela_matrix
ssg_data['ssg_rela_masks'] = ssg_rela_masks
ssg_data['ssg_obj'] = ssg_obj
ssg_data['ssg_obj_masks'] = ssg_obj_masks
ssg_data['ssg_attr'] = ssg_attr
ssg_data['ssg_attr_masks'] = ssg_attr_masks
if not sc_flag:
loss = crit(
dp_model(fc_feats, att_feats, labels, att_masks, rela_data,
ssg_data, use_rela, training_mode), labels[:, 1:],
masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
rela_data,
ssg_data,
use_rela,
training_mode,
opt={'sample_max': 0},
mode='sample')
rela_data = {}
rela_data['att_feats'] = att_feats
rela_data['att_masks'] = att_masks
rela_data['rela_matrix'] = rela_rela_matrix
rela_data['rela_masks'] = rela_rela_masks
rela_data['attr_matrix'] = rela_attr_matrix
rela_data['attr_masks'] = rela_attr_masks
reward = get_self_critical_reward(dp_model, fc_feats, att_feats,
att_masks, rela_data, ssg_data,
use_rela, training_mode, data,
gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
accumulate_iter = accumulate_iter + 1
loss = loss / opt.accumulate_number
loss.backward()
if accumulate_iter % opt.accumulate_number == 0:
if training_mode == 0:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
optimizer.zero_grad()
elif training_mode == 1:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
optimizer.zero_grad()
utils.clip_gradient(optimizer_mem, opt.grad_clip)
optimizer_mem.step()
optimizer_mem.zero_grad()
elif training_mode == 2:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
optimizer.zero_grad()
utils.clip_gradient(optimizer_mem, opt.grad_clip)
optimizer_mem.step()
optimizer_mem.zero_grad()
iteration += 1
accumulate_iter = 0
train_loss = loss.item() * opt.accumulate_number
end = time.time()
text_file = open(opt.id + '.txt', "aw")
if not sc_flag:
print("iter {} (epoch {}), train_model {}, train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, training_mode, train_loss, end - start))
text_file.write("iter {} (epoch {}), train_model {}, train_loss = {:.3f}, time/batch = {:.3f}\n" \
.format(iteration, epoch, training_mode, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:, 0]), end - start))
text_file.write("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}\n" \
.format(iteration, epoch, np.mean(reward[:, 0]), end - start))
text_file.close()
torch.cuda.synchronize()
# Update the iteration and epoch
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every
== 0) and (accumulate_iter % opt.accumulate_number == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every
== 0) and (accumulate_iter % opt.accumulate_number == 0):
# eval model
eval_kwargs = {
'split': 'test',
'dataset': opt.input_json,
'use_rela': use_rela,
'num_images': 1,
}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils_mem.eval_split(
dp_model, crit, loader, training_mode, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if True: # if true
save_id = iteration / opt.save_checkpoint_every
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(
opt.checkpoint_path,
'model' + opt.id + format(int(save_id), '04') + '.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(
opt.checkpoint_path,
'optimizer' + opt.id + format(int(save_id), '04') + '.pth')
torch.save(optimizer.state_dict(), optimizer_path)
if training_mode == 1 or training_mode == 2 or opt.caption_model == 'lstm_mem':
optimizer_mem_path = os.path.join(
opt.checkpoint_path, 'optimizer_mem' + opt.id +
format(int(save_id), '04') + '.pth')
torch.save(optimizer_mem.state_dict(), optimizer_mem_path)
memory_cell = dp_model.memory_cell.data.cpu().numpy()
memory_cell_path = os.path.join(
opt.checkpoint_path, 'memory_cell' + opt.id +
format(int(save_id), '04') + '.npz')
np.savez(memory_cell_path, memory_cell=memory_cell)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(
opt.checkpoint_path, 'infos_' + opt.id +
format(int(save_id), '04') + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(save_id), '04') + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Load data
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
# Tensorboard summaries (they're great!)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
# Load pretrained model, info file, histories file
infos = {}
histories = {}
if opt.start_from is not None:
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
#ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# Create model
model = convcap(opt).cuda()
# pretrained_dict = torch.load('log_xe_final_before_review/all2model12000.pth')
# model.load_state_dict(pretrained_dict, strict=False)
back_model = convcap(opt).cuda()
back_model.train()
# d_pretrained_dict = torch.load('log_xe_final_before_review/all2d_model12000.pth')
# back_model.load_state_dict(d_pretrained_dict, strict=False)
dp_model = model
dp_model.train()
dis_model = Discriminator(512, 512, 512, 0.2)
dis_model = dis_model.cuda()
dis_model.train()
# dis_pretrained_dict = torch.load('./log_xe_final_before_review/all2dis_model12000.pth')
# dis_model.load_state_dict(dis_pretrained_dict, strict=False)
d_optimizer = utils.build_optimizer(dis_model.parameters(), opt)
back_model.train()
# Loss functio}
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
# Optimizer and learning rate adjustment flag
optimizer = utils.build_optimizer_adam(
chain(model.parameters(), back_model.parameters()), opt)
#back_optimizer = utils.build_optimizer(back_model.parameters(), opt)
update_lr_flag = True
#Load the optimizer
# if os.path.isfile(os.path.join('log_xe_final_before_review/',"optimizer.pth")):
# optimizer.load_state_dict(torch.load(os.path.join('log_xe_final_before_review/', 'optimizer.pth')))
# print ('optimiser loaded')
# print (optimizer)
# Training loop
while True:
# Update learning rate once per epoch
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
#opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac, opt.scheduled_sampling_max_prob)
#model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
start = time.time()
data = loader.get_batch('train')
data_time = time.time() - start
start = time.time()
# Unpack data
torch.cuda.synchronize()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['dist'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, dist_label, masks, attmasks = tmp
labels = labels.long()
labels[:, :, 0] = 8667
nd_labels = labels
batchsize = fc_feats.size(0)
# Forward pass and loss
optimizer.zero_grad()
d_steps = 1
g_steps = 1
#print (torch.sum(labels!=0), torch.sum(masks!=0))
if 1:
if iteration >= 0:
if 1:
dp_model.eval()
back_model.eval()
with torch.no_grad():
_, x_all_d = dp_model(fc_feats, att_feats,
nd_labels.long(), 30, 6)
labels_nd = nd_labels.view(batchsize, -1)
idx = [
i for i in range(labels_nd.size()[1] - 1, -1, -1)
]
labels_flip_nd = labels_nd[:, idx]
labels_flip_nd = labels_flip_nd.view(batchsize, 6, 30)
labels_flip_nd[:, :, 0] = 8667
_, x_all_flip_d = back_model(fc_feats, att_feats,
labels_flip_nd, 30, 6)
x_all_d = x_all_d[:, :, :-1]
x_all_flip_d = x_all_flip_d[:, :, :-1]
idx = [
i
for i in range(x_all_flip_d.size()[2] - 1, -1, -1)
]
idx = torch.LongTensor(idx[1:])
idx = Variable(idx).cuda()
invert_backstates = x_all_flip_d.index_select(2, idx)
x_all_d.detach()
invert_backstates.detach()
x_all_d = x_all_d[:, :, :-1]
autoregressive_scores = dis_model(
x_all_d.transpose(2, 1).cuda())
teacher_forcing_scores = dis_model(
invert_backstates.transpose(2, 1).cuda())
tf_loss, ar_loss = _calcualte_discriminator_loss(
teacher_forcing_scores, autoregressive_scores)
tf_loss.backward(retain_graph=True)
ar_loss.backward()
d_optimizer.step()
for p in dis_model.parameters():
p.data.clamp_(-0.01, 0.01)
torch.cuda.synchronize()
total_time = time.time() - start
if 1:
dp_model.train()
back_model.train()
wordact, x_all = dp_model(fc_feats, att_feats, labels, 30,
6)
mask = masks.view(batchsize, -1)
mask = mask[:, 1:].contiguous()
wordact = wordact[:, :, :-1]
wordact_t = wordact.permute(0, 2, 1).contiguous()
wordact_t = wordact_t.view(
wordact_t.size(0) * wordact_t.size(1), -1)
labels_flat = labels.view(batchsize, -1)
wordclass_v = labels_flat[:, 1:]
wordclass_t = wordclass_v.contiguous().view(\
wordclass_v.size(0) * wordclass_v.size(1), 1)
maskids = torch.nonzero(
mask.view(-1).cpu()).numpy().reshape(-1)
loss_xe = F.cross_entropy(wordact_t[maskids, ...], \
wordclass_t[maskids, ...].contiguous().view(maskids.shape[0])).cuda()
idx = [i for i in range(labels_flat.size()[1] - 1, -1, -1)]
labels_flip = labels_flat[:, idx]
labels_flip = labels_flip.view(batchsize, 6, 30)
labels_flip[:, :, 0] = 8667
wordact, x_all_flip = back_model(fc_feats, att_feats,
labels_flip, 30, 6)
mask = masks.view(batchsize, -1).flip((1, ))
reverse_mask = mask[:, 1:].contiguous()
wordact = wordact[:, :, :-1]
wordact_t = wordact.permute(0, 2, 1).contiguous()
wordact_t = wordact_t.view(
wordact_t.size(0) * wordact_t.size(1), -1)
labels_flip = labels_flip.contiguous().view(-1, 6 * 30)
wordclass_v = labels_flip[:, 1:]
wordclass_t = wordclass_v.contiguous().view(\
wordclass_v.size(0) * wordclass_v.size(1), 1)
maskids = torch.nonzero(
reverse_mask.view(-1).cpu()).numpy().reshape(-1)
loss_xe_flip = F.cross_entropy(wordact_t[maskids, ...], \
wordclass_t[maskids, ...].contiguous().view(maskids.shape[0])).cuda()
train_loss = loss_xe
x_all_flip = x_all_flip[:, :, :-1].cuda()
x_all = x_all[:, :, :-1].cuda()
idx = [i for i in range(x_all_flip.size()[2] - 1, -1, -1)]
idx = torch.LongTensor(idx[1:])
idx = Variable(idx).cuda()
invert_backstates = x_all_flip.index_select(2, idx)
invert_backstates = invert_backstates.detach()
l2_loss = ((x_all[:, :, :-1] -
invert_backstates)**2).mean()
autoregressive_scores = dis_model(
x_all.transpose(2, 1).cuda())
ad_loss = _calculate_generator_loss(
autoregressive_scores).sum()
all_loss = loss_xe + loss_xe_flip + l2_loss
ad_loss.backward(retain_graph=True)
all_loss.backward()
# utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
if 1:
if iteration % opt.print_freq == 1:
print('Read data:', time.time() - start)
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f},l2_loss= {:.3f}, flip_loss = {:.3f}, loss_ad = {:.3f}, fake = {:.3f}, real = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, loss_xe, l2_loss, loss_xe_flip, ad_loss, ar_loss, tf_loss, data_time, total_time))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), data_time, total_time))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
#add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[
iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
#ss_prob_history[iteration] = model.ss_prob
# Validate and save model
if (iteration % opt.save_checkpoint_every == 0):
checkpoint_path = os.path.join(
opt.checkpoint_path,
'all2model{:05d}.pth'.format(iteration))
torch.save(model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(
opt.checkpoint_path,
'all2d_model{:05d}.pth'.format(iteration))
torch.save(back_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
checkpoint_path = os.path.join(
opt.checkpoint_path,
'all2dis_model{:05d}.pth'.format(iteration))
torch.save(dis_model.state_dict(), checkpoint_path)
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Evaluate model
if (iteration % 1000 == 0):
eval_kwargs = {'split': 'test', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Our metric is CIDEr if available, otherwise validation loss
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
# Save model in checkpoint path
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, 'd_model.pth')
torch.save(back_model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'dis_model.pth')
torch.save(dis_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
#histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
# Save model to unique file if new best model
if best_flag:
model_fname = 'model-best-i{:05d}-score{:.4f}.pth'.format(
iteration, best_val_score)
infos_fname = 'model-best-i{:05d}-infos.pkl'.format(iteration)
checkpoint_path = os.path.join(opt.checkpoint_path,
model_fname)
torch.save(model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'd_model-best.pth')
torch.save(back_model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'dis_model-best.pth')
torch.save(dis_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, infos_fname),
'wb') as f:
cPickle.dump(infos, f)
def main(configs, args):
global net, dataloader, optimizer, lr_scheduler, writer, epochs, logger
best_acc = 0
torch.manual_seed(6666)
configs = init_configs(configs)
net = build_model(configs)
net = init_model(net, configs)
net = net.cuda().train()
print(net)
if args.debug:
configs.log_dir = os.path.join('debug', configs.log_dir)
configs.ckpt.save_config_path = os.path.join(
'debug', configs.ckpt.save_config_path)
configs.ckpt.save_model_path = os.path.join(
'debug', configs.ckpt.save_model_path)
configs.ckpt.save_optim_path = os.path.join(
'debug', configs.ckpt.save_optim_path)
check_dir(configs.log_dir)
if not configs.do_test:
config_path = configs.ckpt.save_config_path
torch.save({'configs': configs},
os.path.join(config_path, 'configs.pth'))
logger = create_logger(configs.log_dir, configs.cfg_name)
writer = SummaryWriter(configs.log_dir)
for name, param in net.named_parameters():
print('%s required grad is %s' % (name, param.requires_grad))
dataloader = build_dataset(configs)
optimizer = build_optimizer(net.parameters(), configs.optimizer)
optimizer = init_optim(optimizer, configs)
lr_scheduler = get_lr_scheduler(configs.training)
max_iterations = configs.training.max_episodes
test_every_iterations = configs.testing.test_every_episodes
for iteration in range(1, max_iterations + 1):
try:
if iteration % test_every_iterations == 0 or configs.do_test or (
args.debug and args.debug_test):
epochs += 1
acc = test('test', configs)
optim_path = configs.ckpt.save_optim_path
model_path = configs.ckpt.save_model_path
z, ind_z, den_z, images, labels = extract_features(
'test', configs)
if not configs.do_test:
torch.save({'model': net.state_dict()},
os.path.join(model_path,
'model_%d.pth' % iteration))
torch.save({'optim': optimizer.state_dict()},
os.path.join(optim_path,
'optim_%d.pth' % iteration))
torch.save(
{
'z': z.numpy(),
'ind_z': ind_z.numpy(),
'den_z': den_z.numpy(),
'labels': labels,
'images': images
},
os.path.join(model_path, 'results_%d.pth' % iteration))
if acc > best_acc:
best_acc = acc
torch.save({'model': net.state_dict()},
os.path.join(model_path, 'model_best.pth'))
torch.save({'optim': optimizer.state_dict()},
os.path.join(optim_path, 'optim_best.pth'))
if configs.do_test or (args.debug and args.debug_test):
return
train(iteration, configs)
except KeyboardInterrupt:
import ipdb
ipdb.set_trace()
def train(opt):
# opt.use_att = utils.if_use_att(opt.caption_model)
opt.use_att = True
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
opt.vocab_size = 50
opt.seq_length = 10
opt.fc_feat_size = 100
opt.train_true = True
opt.train_true_step = 100
np.random.seed(0)
data_num = 5000
data_features = np.random.normal(size=[data_num, opt.fc_feat_size])
test_data_num = 1000
test_data_features = np.random.normal(
size=[test_data_num, opt.fc_feat_size])
print(opt.checkpoint_path)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
critic_loss_history = histories.get('critic_loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
variance_history = histories.get('variance_history', {})
time_history = histories.get('time_history', {})
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
dp_model = model
#TODO: save true model
true_model = models.setup(opt).cuda()
if vars(opt).get('start_from', None) is not None:
# check if all necessary files exist
assert os.path.isdir(
opt.start_from), " %s must be a a path" % opt.start_from
assert os.path.isfile(
os.path.join(opt.start_from, "infos_" + opt.id + ".pkl")
), "infos.pkl file does not exist in path %s" % opt.start_from
true_model.load_state_dict(
torch.load(os.path.join(opt.start_from, 'truemodel.pth')))
true_model.eval()
######################### Actor-critic Training #####################################################################
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
tm_optimizer = utils.build_optimizer(true_model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
first_order = 0
second_order = 0
while True:
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
dp_model.train()
torch.cuda.synchronize()
start = time.time()
gen_result = None
start_index = (iteration * opt.batch_size) % data_num
end_index = start_index + opt.batch_size
fc_feats = torch.from_numpy(
data_features[start_index:end_index, :]).cuda().float()
att_feats = None
att_masks = None
labels, total_logits = true_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 1},
total_probs=True,
mode='sample')
labels = torch.cat(
[torch.zeros(labels.size(0), 1).cuda().long(), labels], 1)
masks = (labels > 0).float()
# train true model:
if iteration < opt.train_true_step and opt.train_true:
tm_optimizer.zero_grad()
loss = -((total_logits * F.softmax(total_logits, 2)).sum(2)).mean()
loss.backward()
tm_optimizer.step()
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
else:
if opt.rl_type == 'sc':
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
gen_result_sc, _ = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 1},
mode='sample')
reward = reward_fun(gen_result, fc_feats,
true_model).unsqueeze(1).repeat(
1, sample_logprobs.size(1))
reward_sc = reward_fun(gen_result_sc, fc_feats,
true_model).unsqueeze(1).repeat(
1, sample_logprobs.size(1))
reward = reward - reward_sc
loss = rl_crit(sample_logprobs, gen_result.data, reward)
reward = np.zeros([2, 2])
elif opt.rl_type == 'reinforce':
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = reward_fun(gen_result, fc_feats,
true_model).unsqueeze(1).repeat(
1, sample_logprobs.size(1))
loss = rl_crit(sample_logprobs, gen_result.data, reward)
reward = np.zeros([2, 2])
elif opt.rl_type == 'reinforce_demean':
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = reward_fun(gen_result, fc_feats,
true_model).unsqueeze(1).repeat(
1, sample_logprobs.size(1))
loss = rl_crit(sample_logprobs, gen_result.data,
reward - reward.mean())
reward = np.zeros([2, 2])
elif opt.rl_type == 'arsm':
loss = get_arm_loss(dp_model, fc_feats, att_feats, att_masks,
true_model, opt)
#print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'ars':
loss = get_arm_loss(dp_model,
fc_feats,
att_feats,
att_masks,
true_model,
opt,
type='ars')
#print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'ar':
loss = get_ar_loss(dp_model, fc_feats, att_feats, att_masks,
true_model, opt)
# print(loss)
reward = np.zeros([2, 2])
elif opt.rl_type == 'mct_baseline':
opt.rf_demean = 0
gen_result, sample_logprobs, probs, mct_baseline = get_mct_loss(
dp_model, fc_feats, att_feats, att_masks, opt, true_model)
reward = reward_fun(gen_result, fc_feats,
true_model).unsqueeze(1).repeat(
1, sample_logprobs.size(1))
reward_cuda = reward
#mct_baseline[mct_baseline < 0] = reward_cuda[mct_baseline < 0]
loss = rl_crit(sample_logprobs, gen_result.data,
reward - mct_baseline)
if opt.mle_weights != 0:
loss += opt.mle_weights * crit(
dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
#TODO make sure all sampling replaced by greedy for critic
#### update the actor
loss.backward()
# with open(os.path.join(opt.checkpoint_path, 'best_embed.pkl'), 'wb') as f:
# cPickle.dump(list(dp_model.embed.parameters())[0].data.cpu().numpy(), f)
# with open(os.path.join(opt.checkpoint_path, 'best_logit.pkl'), 'wb') as f:
# cPickle.dump(list(dp_model.logit.parameters())[0].data.cpu().numpy(), f)
## compute variance
gradient = torch.zeros([0]).cuda()
for i in model.parameters():
gradient = torch.cat((gradient, i.grad.view(-1)), 0)
first_order = 0.9999 * first_order + 0.0001 * gradient
second_order = 0.9999 * second_order + 0.0001 * gradient.pow(2)
# print(torch.max(torch.abs(gradient)))
variance = torch.mean(torch.abs(second_order -
first_order.pow(2))).item()
if opt.rl_type != 'arsm' or not sc_flag:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if (iteration % opt.losses_log_every == 0):
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
print(opt.checkpoint_path)
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, variance = {:g}, time/batch = {:.3f}" \
.format(iteration, epoch, reward.mean(), variance, end - start))
# Update the iteration and epoch
iteration += 1
if (iteration * opt.batch_size) % data_num == 0:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
reward.mean(), iteration)
add_summary_value(tb_summary_writer, 'variance', variance,
iteration)
#loss_history[iteration] = train_loss if not sc_flag else reward.mean()
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
variance_history[iteration] = variance
time_history[iteration] = end - start
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
val_loss, lang_stats = eval_utils_syn(dp_model, true_model,
test_data_features,
opt.batch_size, crit)
lang_stats = lang_stats.item()
val_loss = val_loss.item()
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats
}
# Save model if is improving on validation result
print('loss', val_loss, 'lang_stats', lang_stats)
if True: # if true
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
if not os.path.isdir(opt.checkpoint_path):
os.mkdir(opt.checkpoint_path)
torch.save(model.state_dict(), checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path,
'truemodel.pth')
torch.save(true_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = opt.vocab_size
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['critic_loss_history'] = critic_loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
histories['variance_history'] = variance_history
histories['time'] = time_history
# histories['variance'] = 0
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'),
'wb') as f:
cPickle.dump(histories, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt, num_switching=None):
global internal
if opt.gpu2 is None:
torch.cuda.set_device(opt.gpu)
RL_count = 0
pure_reward = None
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
# set dataloder
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
opt.baseline_concat = 0
# setting of record
result_path = '/mnt/workspace2019/nakamura/selfsequential/log_python3/' + opt.checkpoint_path
tb_summary_writer = tb and tb.SummaryWriter(result_path)
infos = {}
histories = {}
# --- pretrained model loading --- #
if opt.start_from is not None:
opt.start_from = '/mnt/workspace2019/nakamura/selfsequential/log_python3/' + opt.start_from
if opt.start_from is not None:
# open old infos and check if models are compatible
infos = cPickle.load(open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'), mode='rb'))
saved_model_opt = infos['opt']
# need_be_same=["caption_model", "rnn_type", "rnn_size", "num_layers"]
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[
checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl')):
histories = cPickle.load(open(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl') , mode='rb'))
if opt.sf_epoch is not None and opt.sf_itr is not None:
iteration = opt.sf_itr
epoch = opt.sf_epoch
else:
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
#---------------------------------------#
# I forget about these parameter, they maybe are not used.
b_regressor = None
opt.regressor = b_regressor
# model setting
if opt.gpu2 is not None:
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model)
else:
model = models.setup(opt).cuda()
dp_model = model
update_lr_flag = True
# Assure in training mode
dp_model.train()
# set rl mode and internal critic and similairty model
info_json = json.load(open(opt.input_json))
sim_model = None
new_internal = None
if opt.internal_model == 'sim' or opt.internal_model == 'sim_newr' or opt.internal_model == 'sim_dammy':
# setting internal critic and similarity prediction network
sim_model = sim.Sim_model(opt.input_encoding_size, opt.rnn_size, vocab_size=len(info_json['ix_to_word']))
if opt.region_bleu_flg == 0:
if opt.sim_pred_type == 0:
# model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim2/model_13_1700.pt'
model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_bu/model_6_0.pt'
elif opt.sim_pred_type == 1:
model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_noshuffle04model_71_1300.pt'
elif opt.sim_pred_type == 2:
model_root = '/mnt/workspace2019/nakamura/selfsequential/sim_model/subset_similarity/model_0_3000.pt'
else:
print('select 0 or 1')
exit()
checkpoint = torch.load(model_root, map_location='cuda:0')
sim_model.load_state_dict(checkpoint['model_state_dict'])
sim_model.cuda()
sim_model.eval()
for param in sim_model.parameters():
param.requires_grad = False
sim_model_optimizer = None
elif opt.region_bleu_flg == 1:
sim_model.cuda()
if opt.sf_internal_epoch is not None:
sim_model.load_state_dict(
torch.load(os.path.join(opt.start_from, 'sim_model_' + str(opt.sf_internal_epoch) + '_' + str(
opt.sf_internal_itr) + '.pth')))
# sim_model_optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'internal_optimizer_' + str(
# opt.sf_internal_epoch) + '_' + str(opt.sf_internal_itr) + '.pth')))
sim_model_optimizer = utils.build_internal_optimizer(sim_model.parameters(), opt)
else:
print('not implimented')
exit()
if opt.only_critic_train == 1:
random.seed(100)
if opt.critic_encode==1:
internal = models.CriticModel_with_encoder(opt)
elif opt.bag_flg == 1:
internal = models.CriticModel_bag(opt)
elif opt.ppo == 1:
# internal = models.CriticModel_sim(opt)
internal = models.CriticModel_nodropout(opt)
new_internal = models.CriticModel_nodropout(opt)
internal.load_state_dict(new_internal.state_dict())
elif opt.input_h_flg == 1:
internal = models.CriticModel_sim(opt)
else:
internal = models.CriticModel_sim_h(opt)
internal = internal.cuda()
if new_internal is not None:
new_internal = new_internal.cuda()
if opt.ppo == 1:
internal_optimizer = utils.build_internal_optimizer(new_internal.parameters(), opt)
else:
internal_optimizer = utils.build_internal_optimizer(internal.parameters(), opt)
if opt.sf_internal_epoch is not None:
internal.load_state_dict(torch.load(os.path.join(opt.start_from,'internal_' + str(opt.sf_internal_epoch) + '_' + str(
opt.sf_internal_itr) + '.pth')))
internal_optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'internal_optimizer_' + str(
opt.sf_internal_epoch) + '_' + str(opt.sf_internal_itr) + '.pth')))
# new_internal = models.CriticModel_nodropout(opt)
new_internal.load_state_dict(torch.load(os.path.join(opt.start_from,'internal_' + str(opt.sf_internal_epoch) + '_' + str(
opt.sf_internal_itr) + '.pth')))
if opt.multi_learn_flg != 1:
if opt.internal_rl_flg == 1:
internal_rl_flg = True
dp_model.eval()
else:
internal.eval()
internal_rl_flg = False
else:
internal_rl_flg = True
else:
if opt.sim_reward_flg > 0:
# setting internal critic and similarity prediction network
sim_model = sim.Sim_model(opt.input_encoding_size, opt.rnn_size, vocab_size=len(info_json['ix_to_word']))
if opt.sim_pred_type == 0:
# model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim2/model_13_1700.pt'
# model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_bu/model_6_0.pt'
model_root = '/mnt/workspace2019/nakamura/selfsequential/sim_model/no_shuffle_simforcoco/model_37_34000.pt'
elif opt.sim_pred_type == 1:
model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_noshuffle04model_71_1300.pt'
elif opt.sim_pred_type == 2:
model_root = '/mnt/workspace2019/nakamura/selfsequential/sim_model/subset_similarity/model_0_3000.pt'
else:
print('select 0 or 1')
exit()
if opt.region_bleu_flg == 0:
if opt.sim_pred_type == 0:
# model_root = '/mnt/workspace2018/nakamura/vg_feature/model_cossim2/model_13_1700.pt'
opt.sim_model_dir = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_bu/model_6_0.pt'
elif opt.sim_pred_type == 1:
opt.sim_model_dir = '/mnt/workspace2018/nakamura/vg_feature/model_cossim_noshuffle04model_71_1300.pt'
elif opt.sim_pred_type == 2:
opt.sim_model_dir = '/mnt/workspace2019/nakamura/selfsequential/sim_model/subset_similarity/model_0_3000.pt'
else:
opt.sim_model_dir = '/mnt/workspace2019/nakamura/selfsequential/log_python3/log_' + opt.id + '/sim_model' + opt.model[-13:-4] + '.pth'
checkpoint = torch.load(opt.sim_model_dir, map_location='cuda:0')
sim_model.load_state_dict(checkpoint['model_state_dict'])
sim_model.cuda()
sim_model.eval()
for param in sim_model.parameters():
param.requires_grad = False
sim_model_optimizer = None
elif opt.region_bleu_flg == 1:
sim_model_optimizer = utils.build_internal_optimizer(sim_model.parameters(), opt)
sim_model.cuda()
internal = None
internal_optimizer = None
internal_rl_flg = False
opt.c_current_lr = 0
# opt.internal = internal
# set Discriminator
if opt.discriminator_weight > 0:
dis_opt = opt
if opt.dis_type == 'coco':
discrimiantor_model_dir = '/mnt/workspace2018/nakamura/selfsequential/discriminator_log/coco/discriminator_150.pth'
dis_opt.input_label_h5 = '/mnt/poplin/share/dataset/MSCOCO/cocotalk_coco_for_discriminator_label.h5'
dis_opt.input_json = '/mnt/poplin/share/dataset/MSCOCO/cocotalk_coco_for_discriminator.json'
elif opt.dis_type == 'iapr':
discrimiantor_model_dir = '/mnt/workspace2018/nakamura/selfsequential/discriminator_log/iapr_dict/discriminator_125.pth'
dis_opt.input_label_h5 = '/mnt/workspace2019/visual_genome_pretrain/iapr_talk_cocodict_label.h5'
dis_opt.input_json = '/mnt/workspace2018/nakamura/IAPR/iapr_talk_cocodict.json'
elif opt.dis_type == 'ss':
discrimiantor_model_dir = '/mnt/workspace2019/nakamura/selfsequential/discriminator_log/shuttorstock_dict/discriminator_900.pth'
dis_opt.input_label_h5 = '/mnt/workspace2019/nakamura/shutterstock/shuttorstock_talk_cocodict_label.h5'
dis_opt.input_json = '/mnt/workspace2019/nakamura/shutterstock/shuttorstock_talk_cocodict.json'
elif opt.dis_type == 'sew':
discrimiantor_model_dir = '/mnt/workspace2019/nakamura/selfsequential/discriminator_log/sew/discriminator_900.pth'
dis_opt.input_label_h5 = '/mnt/poplin/share/dataset/simple_english_wikipedia/sew_talk_label.h5'
dis_opt.input_json = '/mnt/poplin/share/dataset/simple_english_wikipedia/sew_talk.json'
elif opt.dis_type == 'sew_cut5':
discrimiantor_model_dir = '/mnt/workspace2019/nakamura/selfsequential/discriminator_log/sew_cut5/discriminator_90.pth'
dis_opt.input_label_h5 = '/mnt/poplin/share/dataset/simple_english_wikipedia/sew_talk_label.h5'
dis_opt.input_json = '/mnt/poplin/share/dataset/simple_english_wikipedia/sew_talk.json'
opt.cut_length = 5
elif opt.dis_type == 'vg_cut5':
opt.cut_length = 5
discrimiantor_model_dir = '/mnt/workspace2019/nakamura/selfsequential/discriminator_log/vg_cut5/discriminator_200.pth'
dis_opt.input_label_h5 = '/mnt/poplin/share/dataset/MSCOCO/cocotalk_subset_vg_larger_label.h5'
dis_opt.input_json = '/mnt/poplin/share/dataset/MSCOCO/cocotalk_subset_vg_larger_addregions.json'
else:
print('select existing discriminative model!')
exit()
discriminator_path_learned = os.path.join(result_path, 'discriminator_{}_{}.pth'.format(epoch, iteration))
Discriminator = dis_utils.Discriminator(opt)
if os.path.isfile(discriminator_path_learned):
Discriminator.load_state_dict(torch.load(discriminator_path_learned, map_location='cuda:' + str(opt.gpu)))
else:
Discriminator.load_state_dict(torch.load(discrimiantor_model_dir, map_location='cuda:' + str(opt.gpu)))
Discriminator = Discriminator.cuda()
# change discriminator learning rate
# opt.learning_rate = opt.learning_rate/10
dis_optimizer = utils.build_optimizer(Discriminator.parameters(), opt)
# for group in dis_optimizer.param_groups:
# group['lr'] = opt.learning_rate/100
Discriminator.eval()
dis_loss_func = nn.BCELoss().cuda()
dis_loader = dis_dataloader.DataLoader(dis_opt)
else:
Discriminator = None
dis_loader = None
dis_optimizer = None
# set Acter Critic network
if opt.actor_critic_flg == 1:
Q_net = models.Actor_Critic_Net_upper(opt)
target_Q_net = models.Actor_Critic_Net_upper(opt)
Q_net.load_state_dict(target_Q_net.state_dict())
target_model = models.setup(opt).cuda()
target_model.load_state_dict(model.state_dict())
target_model.eval()
Q_net.cuda()
target_Q_net.cuda()
Q_net_optimizer = utils.build_optimizer(Q_net.parameters(), opt)
elif opt.actor_critic_flg == 2:
Q_net = models.Actor_Critic_Net_seq(opt)
target_Q_net = models.Actor_Critic_Net_seq(opt)
Q_net.load_state_dict(target_Q_net.state_dict())
target_model = models.setup(opt).cuda()
target_model.load_state_dict(model.state_dict())
target_model.eval()
Q_net.cuda()
target_Q_net.cuda()
Q_net_optimizer = utils.build_optimizer(Q_net.parameters(), opt)
seq_mask = torch.zeros((opt.batch_size * opt.seq_per_img, opt.seq_length, opt.seq_length)).cuda().type(torch.cuda.LongTensor)
for i in range(opt.seq_length):
seq_mask[:, i, :i] += 1
elif opt.t_model_flg == 1:
target_model = models.setup(opt).cuda()
target_model.load_state_dict(model.state_dict())
target_model.eval()
else:
target_model = None
baseline = None
new_model = None
# set functions calculating loss
if opt.caption_model == 'hcatt_hard' or opt.caption_model == 'basicxt_hard' or opt.caption_model == 'hcatt_hard_nregion' or opt.caption_model == 'basicxt_hard_nregion' :
if opt.ppo == 1:
new_model = models.setup(opt).cuda()
new_model.load_state_dict(model.state_dict())
# new_optimizer = utils.build_optimizer(new_model.parameters(), opt)
# new_model.eval()
# If you use hard attention, use this setting (but is is not implemented completely)
crit = utils.LanguageModelCriterion_hard()
else:
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
rl_crit_hard = utils.RewardCriterion_hard()
rl_crit_conly = utils.RewardCriterion_conly()
rl_crit_hard_base = utils.RewardCriterion_hard_baseline()
att_crit = utils.AttentionCriterion()
if opt.caption_model == 'hcatt_hard' and opt.ppo == 1:
optimizer = utils.build_optimizer(new_model.parameters(), opt)
else:
# set optimizer
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(os.path.join(opt.start_from,"optimizer.pth")):
if opt.sf_epoch is None:
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
else:
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer_' + str(opt.sf_epoch) + '_' +str(opt.sf_itr) + '.pth')))
critic_train_count = 0
total_critic_reward = 0
pre_para = None
#------------------------------------------------------------------------------------------------------------#
# training start
while True:
train_loss = 0
if update_lr_flag:
# cahnge lr
opt, optimizer, model, internal_optimizer, dis_optimizer = utils.change_lr(opt, epoch, optimizer, model, internal_optimizer, dis_optimizer)
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
# internal_rl_flg == False
init_scorer(opt.cached_tokens, len(info_json['ix_to_word']))
else:
sc_flag = False
update_lr_flag = False
# # !!!!!
# internal_rl_flg = False
# model.train()
# internal.eval()
# #!!!!!
# Load data from train split (0)
data = loader.get_batch('train')
torch.cuda.synchronize()
start = time.time()
# get datch
tmp = [data['fc_feats'], data['att_feats'], data['labels'], data['masks'], data['att_masks'],
data['bbox'], data['sub_att'], data['fixed_region']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks, bbox, sub_att, fixed_region = tmp
optimizer.zero_grad()
# calculating loss...
if not sc_flag:
# use cross entropy
if opt.weight_deterministic_flg > 0:
weight_index = np.array(data['weight_index'])
# fc_feats = fc_feats * 0.0
output = dp_model(fc_feats, att_feats, labels, att_masks, internal, weight_index=weight_index)
# output = dp_model(fc_feats, att_feats, labels, att_masks, internal, weight_index=None)
else:
output = dp_model(fc_feats, att_feats, labels, att_masks, internal)
if opt.caption_model == 'hcatt_prob':
print(torch.exp(output).mean(), model.probs.mean())
output = output + model.probs.view(output.size(0), output.size(1), 1)
loss = crit(output, labels[:,1:], masks[:,1:])
elif opt.caption_model != 'hcatt_hard' and opt.caption_model != 'hcatt_hard_nregion'and opt.caption_model != 'basicxt_hard_nregion' and opt.caption_model != 'basicxt_hard':
loss = crit(output, labels[:,1:], masks[:,1:])
else:
if baseline is None:
baseline = torch.zeros((output.size()[0], output.size()[1]))/output.size()[1]
baseline = baseline.cuda()
# baseline = torch.log(baseline)
# print('pre:', baseline.mean().item())
loss, baseline = crit(output, labels[:,1:], masks[:,1:], baseline, dp_model.weights_p, dp_model.weights)
# print('after:', baseline.mean().item())
else:
# use rl
if opt.weight_deterministic_flg > 0:
weight_index = np.array(data['weight_index'])
else:
weight_index = None
if dp_model.training:
sample_max_flg = 0
else:
sample_max_flg = 1
# get predicted captions and logprops, similarity
gen_result, sample_logprobs, word_exist_seq = dp_model(fc_feats, att_feats, att_masks,internal,
opt={'sample_max':sample_max_flg}, sim_model = sim_model, New_Critic=new_internal,
bbox=bbox, sub_att=sub_att, label_region = data['label_region'], weight_index=weight_index,mode='sample')
train_similarity = dp_model.similarity
# ---------- learning discriminator ----------------
if Discriminator is not None and opt.dis_adv_flg == 1 and internal_rl_flg == False:
correct = 0
Discriminator.train()
fake_data = gen_result.data.cpu()
hokan = torch.zeros((len(fake_data), 1)).type(torch.LongTensor)
fake_data = torch.cat((hokan, fake_data, hokan), 1).cuda()
fake_data = fake_data[:, 1:]
label = torch.ones((fake_data.size(0))).cuda()
# pdb.set_trace()
Discriminator, dis_optimizer, correct, neg_loss = \
dis_utils.learning_func(Discriminator, dis_optimizer, fake_data, label, correct, 0, opt.cut_length, opt.random_disc, opt.all_switch_end_dis, opt.all_switch_dis,
loss_func=dis_loss_func, weight_index=weight_index, model_gate=model.gate.data.cpu().numpy())
dis_data = dis_loader.get_batch('train', batch_size=fake_data.size(0))
real_data = torch.from_numpy(dis_data['labels']).cuda()
real_data = real_data[:, 1:]
Discriminator, dis_optimizer, correct, pos_loss = \
dis_utils.learning_func(Discriminator, dis_optimizer, real_data, label, correct, 1, opt.cut_length, 0, 0, 0,
loss_func=dis_loss_func, weight_index=weight_index)
loss_mean = (pos_loss + neg_loss) / 2
dis_accuracy = correct/(fake_data.size(0) * 2)
print('Discriminator loss: {}, accuracy: {}'.format(loss_mean, dis_accuracy))
Discriminator.eval()
else:
loss_mean = -1.0
dis_accuracy = -1.0
# --------------------------------------------------
# ---------- calculate att loss -----------
if opt.att_reward_flg == 1 and model.training:
# if opt.att_reward_flg == 1 :
att_loss = att_crit(model, gen_result.data.cpu().numpy())
att_loss_num = att_loss.data.cpu().numpy()
else:
att_loss = 0.0
att_loss_num = 0.0
# ------------------------------------------
# --- get states and actions xt and weights, ccs, seqs ---
if opt.actor_critic_flg==1 and model.training:
xts = model.all_xts
weights_p = model.weights_p
ccs = internal.output_action
if opt.actor_critic_flg == 2 and model.training:
all_logprops = model.all_logprops
weight_state = model.state_weights
# xts = model.all_xts
gen_result_repeat = gen_result.repeat(1, opt.seq_length).view(all_logprops.size(0), opt.seq_length, opt.seq_length)
# xts = seq_mask * gen_result_repeat
xts = gen_result_repeat
weights_p = model.weights_p
# pdb.set_trace()
if internal is not None:
ccs = internal.output_action
else:
ccs = torch.zeros((len(xts), weights_p.size(1))).cuda()
if opt.caption_model == 'hcatt_hard' and opt.ppo==1:
xts = model.all_xts
weights_p = model.weights_p
weights = model.weights
# ----------------------------------------------------------
# ---------------- Calculate reward (CIDEr, Discriminator, Similarity...)---------------------
if opt.actor_critic_flg == 2 and model.training:
reward, pure_reward = get_self_critical_and_similarity_reward_for_actor_critic(dp_model,
fc_feats,
att_feats,
att_masks, data,
gen_result, opt,
train_similarity,
internal=internal,
sim_model=sim_model,
label_region=data['label_region'],
D=Discriminator)
else:
reward, pure_reward, actor_critic_reward, target_update_flg = get_self_critical_and_similarity_reward(dp_model, fc_feats, att_feats,
att_masks, data, gen_result, opt,
train_similarity,
internal=internal,
sim_model=sim_model,
label_region=data['label_region'],
bbox=bbox,
D=Discriminator,
weight_index=weight_index,
fixed_region=fixed_region,
target_model=target_model)
if target_update_flg and target_model is not None:
print('----- target model updated ! -----')
target_model.load_state_dict(model.state_dict())
# print(train_similarity.mean(), model.similarity.mean())
#----------------------------------------------------------
#-------------------------------- calculate captioning model loss -----------------------------------------
#------------ Calculate actor critic loss ----------------
if opt.actor_critic_flg == 1 and model.training:
# get q_value
q_value = Q_net(fc_feats, att_feats, xts, weights_p, gen_result)
# get target_sample
with torch.no_grad():
gen_result_sample, __ = target_model(fc_feats, att_feats, att_masks,
seqs=gen_result, ccs=ccs, mode='sample')
target_q_value = target_Q_net(fc_feats, att_feats, target_model.all_xts, target_model.weights_p, gen_result)
# calculate actor critic loss
actor_critic_loss = Q_net.loss_func(actor_critic_reward, q_value, target_q_value)
add_summary_value(tb_summary_writer, 'actor_critic_loss', actor_critic_loss.item(), iteration, opt.tag)
Q_net_optimizer.zero_grad()
elif opt.actor_critic_flg == 2 and model.training:
# get q_value
q_value = Q_net(fc_feats, att_feats, xts, weight_state.detach(), weights_p, all_logprops[:,:-1,:], gen_result)
# get target_sample
with torch.no_grad():
gen_result_sample, __ = target_model(fc_feats, att_feats, att_masks,
seqs=gen_result, ccs=ccs, mode='sample', state_weights=weight_state)
# pdb.set_trace()
target_q_value = target_Q_net(fc_feats, att_feats, xts, target_model.state_weights,
target_model.weights_p, target_model.all_logprops[:,:-1,:], gen_result)
# calculate actor critic loss
if reward is None:
pdb.set_trace()
actor_critic_loss = Q_net.loss_func(reward, q_value, target_q_value, gen_result)
print('actor_critic_loss', actor_critic_loss.item())
add_summary_value(tb_summary_writer, 'actor_critic_loss', actor_critic_loss.item(), iteration,
opt.tag)
Q_net_optimizer.zero_grad()
else:
actor_critic_loss = 0
model.att_score = att_loss_num
# update ppo old policy
if new_internal is not None and internal.iteration % 1 == 0:
internal.load_state_dict(new_internal.state_dict())
if opt.caption_model == 'hcatt_hard' and opt.ppo == 1:
model.load_state_dict(new_model.state_dict())
if not internal_rl_flg or opt.multi_learn_flg == 1:
# if opt.ppo == 1 and opt.caption_model == 'hcatt_hard':
# -------------- calculaete self critical loss ---------------
if False:
# get coeffitient and calculate
new_gen_result, new_sample_logprobs = new_model(fc_feats, att_feats, att_masks,
seqs=gen_result, mode='sample', decided_att=weights)
new_model.pre_weights_p = new_model.weights_p
new_model.pre_weights = new_model.weights
att_index = np.where(weights.data.cpu() > 0)
weights_p_ = weights_p[att_index].view(weights_p.size(0), weights_p.size(1)) # (batch, seq_length)
reward_coefficient = 1 / (torch.exp(sample_logprobs) * weights_p_).data.cpu()
# train caption network get reward and calculate loss
reward_loss, baseline = utils.calculate_loss(opt, rl_crit, rl_crit_hard, rl_crit_hard_base,
new_sample_logprobs, gen_result, reward,
baseline, new_model, reward_coefficient=reward_coefficient)
elif (not internal_rl_flg or opt.multi_learn_flg == 1) and opt.actor_critic_flg == 0:
# train caption network get reward and calculate loss
if opt.weight_deterministic_flg == 7:
reward_loss, baseline = utils.calculate_loss(opt, rl_crit, rl_crit_hard, rl_crit_hard_base,
sample_logprobs, word_exist_seq, reward,
baseline, model)
else:
reward_loss, baseline = utils.calculate_loss(opt, rl_crit, rl_crit_hard, rl_crit_hard_base,
sample_logprobs, gen_result, reward,
baseline, model)
else:
reward_loss = 0
# -------------- calculaete self critical loss ---------------
if (opt.caption_model == 'hcatt_simple' or opt.caption_model == 'hcatt_simple_switch') and opt.xe_weight > 0.0:
output = dp_model(fc_feats, att_feats, labels, att_masks, internal, weight_index=weight_index)
xe_loss = crit(output, labels[:, 1:], masks[:, 1:])
print('r_loss: {}, xe_loss: {}'.format(reward_loss.item(), xe_loss.item()))
add_summary_value(tb_summary_writer, 'xe_loss', xe_loss.item(), iteration, opt.tag)
add_summary_value(tb_summary_writer, 'r_loss', reward_loss.item(), iteration, opt.tag)
else:
xe_loss = 0.0
loss = opt.rloss_weight * reward_loss + opt.att_lambda * att_loss + actor_critic_loss + opt.xe_weight * xe_loss
# --------------------------------------------------------------------------------------------------------
# ------------------------- calculate internal critic loss and update ---------------------------
if internal_optimizer is not None and internal_rl_flg == True and sc_flag:
internal_optimizer.zero_grad()
if opt.region_bleu_flg == 1:
sim_model_optimizer.zero_grad()
if opt.only_critic_train == 0:
internal_loss = rl_crit(internal.pre_output, gen_result.data, torch.from_numpy(reward).float().cuda(),
reward_coefficient=internal.pre_reward_coefficient)
else:
internal_loss = rl_crit_conly(internal.pre_output, gen_result.data, torch.from_numpy(reward).float().cuda(),
reward_coefficient=internal.pre_reward_coefficient, c_count=critic_train_count)
q_value_prop = torch.exp(internal.pre_output)
entropy = torch.mean(-1 * q_value_prop * torch.log2(q_value_prop + 1e-8) + -1 * (1 - q_value_prop) * torch.log2(
1 - q_value_prop + 1e-8))
internal_loss = internal_loss
internal_loss.backward()
internal_optimizer.step()
if opt.region_bleu_flg == 1:
sim_model_optimizer.step()
# ----- record loss and reward to tensorboard -----
# q_value_prop = torch.exp(internal.pre_output)
# entropy = torch.mean(-1 * q_value_prop * torch.log2(q_value_prop + 1e-8) + -1 * (1 - q_value_prop) * torch.log2(1 - q_value_prop + 1e-8))
if opt.only_critic_train == 1:
if internal is not None and sc_flag:
num_internal_switching = internal.same_action_flg.mean().item()
else:
num_internal_switching = 0
total_critic_reward += np.mean(pure_reward)
total_critic_reward = utils.record_tb_about_critic(model, internal_loss.cpu().data, critic_train_count, opt.tag,
tb_summary_writer, reward,
pure_reward, entropy,
opt.sim_sum_flg,num_internal_switching,
total_critic_reward=total_critic_reward)
else:
if internal is not None and sc_flag:
num_internal_switching = internal.same_action_flg.mean().item()
else:
num_internal_switching = 0
total_critic_reward = utils.record_tb_about_critic(model, internal_loss.cpu().data, iteration, opt.tag,
tb_summary_writer, reward, pure_reward, entropy, opt.sim_sum_flg, num_internal_switching)
# -------------------------------------------------
critic_train_count += 1
internal.reset()
internal.iteration+=1
print('iter {} (epoch {}), internal_loss: {}, avg_reward: {}, entropy: {}'.format(iteration, epoch,internal_loss, reward.mean(), entropy))
# --------------------------------------------------------------------------------------------------------
else:
#------------------------- updating captioning model ----------------------------
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
if opt.actor_critic_flg > 0 and model.training:
utils.clip_gradient(Q_net_optimizer, opt.grad_clip)
Q_net_optimizer.step()
utils.soft_update(target_model, model, 0.001)
utils.soft_update(target_Q_net, Q_net, 0.001)
# if iteration % 1000 == 0:
# utils.hard_update(target_model, model)
# utils.hard_update(target_Q_net, Q_net)
# else:
# utils.soft_update(target_model, model, 0.001)
# utils.soft_update(target_Q_net, Q_net, 0.001)
train_loss = loss.item()
torch.cuda.synchronize()
del loss
end = time.time()
if internal is not None and sc_flag:
num_internal_switching = internal.same_action_flg.mean().item()
else:
num_internal_switching = 0
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
try:
print("iter {} (epoch {}), avg_reward = {:.3f}, att_loss = {:.3f}. time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), model.att_score.item(), end - start))
utils.record_tb_about_model(model, pure_reward, tb_summary_writer, iteration, opt.tag,
opt.sim_sum_flg, loss_mean, dis_accuracy, num_internal_switching)
except AttributeError:
print("iter {} (epoch {}), avg_reward = {:.3f}, att_loss = {:.3f}. time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:, 0]), model.att_score, end - start))
utils.record_tb_about_model(model, pure_reward, tb_summary_writer, iteration, opt.tag,
opt.sim_sum_flg, loss_mean, dis_accuracy, num_internal_switching)
RL_count += 1
# --------------------------------------------------------------------------------
# Update the iteration and epoch
iteration += 1
# -------------------- change train internal critic or caption network -----------------------------
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
if opt.cycle is None and internal is not None and opt.multi_learn_flg != 1:
# and entropy < 1.0
if internal_rl_flg == True and opt.only_critic_train == 0:
if opt.actor_critic_flg == 1:
utils.hard_update(target_model, model)
utils.hard_update(target_Q_net, Q_net)
internal_rl_flg = False
internal.eval()
dp_model.train()
if weight_index is not None and loader.weight_deterministic_flg == 4:
loader.weight_deterministic_flg = 5
if opt.region_bleu_flg == 1:
sim_model.eval()
train_loss = None
# elif internal_optimizer is not None and internal_rl_flg == False:
# elif internal_optimizer is not None and internal_rl_flg == False and (epoch + 1) % 3 == 0 and opt.internal_model != 'sim_dammy':
# elif internal_optimizer is not None and internal_rl_flg == False and opt.internal_model != 'sim_dammy':
else:
internal_rl_flg = True
# internal.load_state_dict(torch.load(result_path + '/internal_best.pth'))
if opt.ppo == 1:
internal_optimizer = optim.Adam(new_internal.parameters(), opt.c_learning_rate,
weight_decay=1e-5)
else:
internal_optimizer = optim.Adam(internal.parameters(), opt.c_learning_rate, weight_decay=1e-5)
internal.train()
if opt.region_bleu_flg == 1:
sim_model.train()
dp_model.eval()
if weight_index is not None and loader.weight_deterministic_flg == 5:
loader.weight_deterministic_flg = 4
internal.reset()
internal.max_r = 0
# --------------------------------------------------------------------------------------------------
# ------------------- Write the training loss summary ------------------------------
if (iteration % opt.losses_log_every == 0) and internal_rl_flg == False and train_loss is not None:
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration, opt.tag)
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration, opt.tag)
add_summary_value(tb_summary_writer, 'critic_learning_rate', opt.c_current_lr, iteration, opt.tag)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration, opt.tag)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward', np.mean(reward[:,0]), iteration, opt.tag)
loss_history[iteration] = train_loss if not sc_flag else np.mean(reward[:,0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# ----------------------------------------------------------------------------------
# ------------------------ make evaluation on validation set, and save model ------------------------------
wdf7_eval_flg = (opt.weight_deterministic_flg != 7 or sc_flag)
if ((iteration % opt.save_checkpoint_every == 0) or iteration == 39110 or iteration == 113280 or iteration == 151045 or iteration == 78225 or iteration == 31288 or iteration == 32850 or iteration == 46934) and train_loss is not None:
if sc_flag and (opt.caption_model == 'hcatt_hard' or opt.caption_model == 'basicxt_hard' or opt.caption_model == 'hcatt_hard_nregion' or opt.caption_model == 'basicxt_hard_nregion'):
if baseline is None:
baseline = torch.zeros((sample_logprobs.size()[0], sample_logprobs.size()[1] + 1)) / sample_logprobs.size()[1]
baseline = baseline.cuda()
# baseline = torch.log(baseline)
# eval model
varbose_loss = not sc_flag
eval_kwargs = {'split': 'val',
'internal': internal,
'sim_model': sim_model,
'caption_model': opt.caption_model,
'baseline': baseline,
'gts': data['gts'],
'dataset': opt.dataset,
'verbose_loss': varbose_loss,
'weight_deterministic_flg': opt.weight_deterministic_flg
}
eval_kwargs.update(vars(opt))
# pdb.set_trace()
if wdf7_eval_flg:
# eval_utils.eval_writer(dp_model, iteration, loader, tb_summary_writer, eval_kwargs)
val_loss, predictions, lang_stats = eval_utils.eval_split(dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration, opt.tag)
if lang_stats is not None:
for k,v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration, opt.tag)
val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = - val_loss
else:
val_result_history[iteration] = {'loss': None, 'lang_stats': None, 'predictions': None}
current_score = 0
best_flag = False
if True: # if true
if internal_rl_flg == False:
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(result_path, 'model_{}_{}.pth'.format(epoch, iteration))
torch.save(model.state_dict(), checkpoint_path)
optimizer_path = os.path.join(result_path, 'optimizer_{}_{}.pth'.format(epoch, iteration))
torch.save(optimizer.state_dict(), optimizer_path)
print("model saved to {}".format(checkpoint_path))
if internal is not None:
internal.eval()
checkpoint_path = os.path.join(result_path, 'internal_{}_{}.pth'.format(epoch, iteration))
torch.save(internal.state_dict(), checkpoint_path)
optimizer_path = os.path.join(result_path,
'internal_optimizer_{}_{}.pth'.format(epoch, iteration))
torch.save(internal_optimizer.state_dict(), optimizer_path)
print("internal model saved to {}".format(checkpoint_path))
checkpoint_path = os.path.join(result_path, 'sim_model_{}_{}.pth'.format(epoch, iteration))
torch.save(sim_model.state_dict(), checkpoint_path)
print("sim_model saved to {}".format(checkpoint_path))
else:
checkpoint_path = os.path.join(result_path, 'model_{}_{}.pth'.format(epoch, iteration))
torch.save(model.state_dict(), checkpoint_path)
optimizer_path = os.path.join(result_path, 'optimizer_{}_{}.pth'.format(epoch, iteration))
torch.save(optimizer.state_dict(), optimizer_path)
print("model saved to {}".format(checkpoint_path))
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(result_path, 'internal_{}_{}.pth'.format(epoch, iteration))
torch.save(internal.state_dict(), checkpoint_path)
optimizer_path = os.path.join(result_path, 'internal_optimizer_{}_{}.pth'.format(epoch, iteration))
torch.save(internal_optimizer.state_dict(), optimizer_path)
print("internal model saved to {}".format(checkpoint_path))
checkpoint_path = os.path.join(result_path, 'sim_model_{}_{}.pth'.format(epoch, iteration))
torch.save(sim_model.state_dict(), checkpoint_path)
print("sim_model saved to {}".format(checkpoint_path))
dp_model.eval()
if Discriminator is not None:
discriminator_path = os.path.join(result_path, 'discriminator_{}_{}.pth'.format(epoch, iteration))
torch.save(Discriminator.state_dict(), discriminator_path)
dis_optimizer_path = os.path.join(result_path, 'dis_optimizer_{}_{}.pth'.format(epoch, iteration))
torch.save(dis_optimizer.state_dict(), dis_optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
infos['internal_rl_flg'] = internal_rl_flg
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(os.path.join(result_path, 'infos_'+opt.id+'.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(os.path.join(result_path, 'histories_'+opt.id+'.pkl'), 'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(result_path, 'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(result_path, 'infos_'+opt.id+'-best.pkl'), 'wb') as f:
cPickle.dump(infos, f)
# pdb.set_trace()
# ---------------------------------------------------------------------------------------------------------
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
acc_steps = getattr(opt, 'acc_steps', 1)
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
opt.ix_to_word = loader.ix_to_word
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'), 'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = ["caption_model", "rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.vocab = loader.get_vocab()
model = models.setup(opt).cuda()
del opt.vocab
dp_model = torch.nn.DataParallel(model)
lw_model = LossWrapper(model, opt)
dp_lw_model = torch.nn.DataParallel(lw_model)
epoch_done = True
# Assure in training mode
dp_lw_model.train()
if opt.noamopt:
optimizer = utils.get_std_opt(model, factor=opt.noamopt_factor, warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
def save_checkpoint(model, infos, optimizer, histories=None, append=''):
if len(append) > 0:
append = '-' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, 'model%s.pth' %(append))
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer%s.pth' %(append))
torch.save(optimizer.state_dict(), optimizer_path)
with open(os.path.join(opt.checkpoint_path, 'infos_'+opt.id+'%s.pkl' %(append)), 'wb') as f:
utils.pickle_dump(infos, f)
if histories:
with open(os.path.join(opt.checkpoint_path, 'histories_'+opt.id+'%s.pkl' %(append)), 'wb') as f:
utils.pickle_dump(histories, f)
try:
while True:
sys.stdout.flush()
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
print('Learning Rate: ', opt.current_lr)
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
data = loader.get_batch('train')
if (iteration % acc_steps == 0):
optimizer.zero_grad()
torch.cuda.synchronize()
start = time.time()
tmp = [data['fc_feats'], data['att_feats'], data['c3d_feats'], data['labels'], data['masks'], data['att_masks'], data['c3d_masks']]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, c3d_feats, labels, masks, att_masks, c3d_masks = tmp
model_out = dp_lw_model(fc_feats, att_feats, c3d_feats, labels, masks, att_masks, c3d_masks, data['gts'], torch.arange(0, len(data['gts'])), sc_flag)
loss = model_out['loss'].mean()
loss_sp = loss / acc_steps
loss_sp.backward()
if ((iteration + 1) % acc_steps == 0):
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
torch.cuda.synchronize()
train_loss = loss.item()
end = time.time()
if iteration % 1 == 0:
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}".format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), reward1 = {:.3f}, reward2 = {:.3f}, reward3 = {:.3f}, train_loss = {:.3f}, time/batch = {:.3f}".format(iteration, epoch, model_out['reward_layer1'].mean(), model_out['reward_layer2'].mean(), model_out['reward_layer3'].mean(), train_loss, end - start))
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'reward1', model_out['reward_layer1'].mean(), iteration)
add_summary_value(tb_summary_writer, 'reward2', model_out['reward_layer2'].mean(), iteration)
add_summary_value(tb_summary_writer, 'reward3', model_out['reward_layer3'].mean(), iteration)
loss_history[iteration] = train_loss
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': opt.val_split, 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(dp_model, lw_model.crit, loader, eval_kwargs)
print('Summary Epoch {} Iteration {}: CIDEr: {} BLEU-4: {}'.format(epoch, iteration, lang_stats['CIDEr'], lang_stats['Bleu_4']))
if opt.reduce_on_plateau:
if opt.reward_metric == 'cider':
optimizer.scheduler_step(-lang_stats['CIDEr'])
elif opt.reward_metric == 'bleu':
optimizer.scheduler_step(-lang_stats['Bleu_4'])
elif opt.reward_metric == 'meteor':
optimizer.scheduler_step(-lang_stats['METEOR'])
elif opt.reward_metric == 'rouge':
optimizer.scheduler_step(-lang_stats['ROUGE_L'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration)
if lang_stats is not None:
for k,v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
if opt.reward_metric == 'cider':
current_score = lang_stats['CIDEr']
elif opt.reward_metric == 'bleu':
current_score = lang_stats['Bleu_4']
elif opt.reward_metric == 'meteor':
current_score = lang_stats['METEOR']
elif opt.reward_metric == 'rouge':
current_score = lang_stats['ROUGE_L']
else:
current_score = - val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
save_checkpoint(model, infos, optimizer, histories)
if opt.save_history_ckpt:
save_checkpoint(model, infos, optimizer, append=str(iteration))
if best_flag:
save_checkpoint(model, infos, optimizer, append='best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
# Deal with feature things before anything
opt.use_fc, opt.use_att = utils.if_use_feat(opt.caption_model)
if opt.use_box:
opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'), 'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = ["caption_model",
"rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[
checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# cnn_model = utils.build_cnn(opt)
cnn_model = create_extractor("/root/PycharmProjects/vgg_vae_best_model.pth")
cnn_model = cnn_model.cuda()
if vars(opt).get('start_from', None) is not None:
cnn_model.load_state_dict(torch.load(os.path.join(opt.start_from, 'model-cnn.pth')))
print("load cnn model parameters from {}".format(os.path.join(opt.start_from, 'model-cnn.pth')))
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model)
lw_model = LossWrapper(model, opt)
dp_lw_model = torch.nn.DataParallel(lw_model)
# dp_lw_model = lw_model
epoch_done = True
# Assure in training mode
dp_lw_model.train()
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(
model, factor=opt.noamopt_factor, warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# if opt.finetune_cnn_after != -1:
# # only finetune the layer2 to layer4
cnn_optimizer = optim.Adam([
{'params': module.parameters()} for module in cnn_model.finetune_modules
], lr=opt.cnn_learning_rate, weight_decay=opt.cnn_weight_decay)
# Load the optimizer
if vars(opt).get('start_from', None) is not None:
if os.path.isfile(os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(torch.load(
os.path.join(opt.start_from, 'optimizer.pth')))
if opt.finetune_cnn_after != -1:
if os.path.isfile(os.path.join(opt.start_from, 'optimizer-cnn.pth')):
cnn_optimizer.load_state_dict(torch.load(
os.path.join(opt.start_from, 'optimizer-cnn.pth')))
def save_checkpoint(model, cnn_model, infos, optimizer, cnn_optimizer, histories=None, append=''):
if len(append) > 0:
append = '-' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
checkpoint_path = os.path.join(
opt.checkpoint_path, 'model%s.pth' % (append))
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
cnn_checkpoint_path = os.path.join(
opt.checkpoint_path, 'model-cnn%s.pth' % (append))
torch.save(cnn_model.state_dict(), cnn_checkpoint_path)
print("cnn model saved to {}".format(cnn_checkpoint_path))
optimizer_path = os.path.join(
opt.checkpoint_path, 'optimizer%s.pth' % (append))
torch.save(optimizer.state_dict(), optimizer_path)
if opt.finetune_cnn_after != -1 and epoch >= opt.finetune_cnn_after:
cnn_optimizer_path = os.path.join(
opt.checkpoint_path, 'optimizer%s-cnn.pth' % (append))
torch.save(cnn_optimizer.state_dict(), cnn_optimizer_path)
with open(os.path.join(opt.checkpoint_path, 'infos_' + opt.id + '%s.pkl' % (append)), 'wb') as f:
utils.pickle_dump(infos, f)
if histories:
with open(os.path.join(opt.checkpoint_path, 'histories_' + opt.id + '%s.pkl' % (append)), 'wb') as f:
utils.pickle_dump(histories, f)
try:
while True:
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (
epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
# set the decayed rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (
epoch - opt.scheduled_sampling_start) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac, opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# Update the training stage of cnn
if opt.finetune_cnn_after == -1 or epoch < opt.finetune_cnn_after:
for p in cnn_model.parameters():
p.requires_grad = False
cnn_model.eval()
else:
for p in cnn_model.parameters():
p.requires_grad = True
# Fix the first few layers:
for module in cnn_model.fixed_modules:
for p in module.parameters():
p.requires_grad = False
cnn_model.train()
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
torch.cuda.synchronize()
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
tmp = [data['fc_feats'], data['att_feats'],
data['labels'], data['masks'], data['att_masks']]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
# att_feats 8x672x224
att_feats = att_feats.view(att_feats.size(0), 3, 224, 224)
att_feats, fc_feats = cnn_model(att_feats)
# fc_feats = att_feats.mean(3).mean(2)
# att_feats = torch.nn.functional.adaptive_avg_pool2d(
# att_feats, [7, 7]).permute(0, 2, 3, 1)
att_feats = att_feats.permute(0, 2, 3, 1)
att_feats = att_feats.view(att_feats.size(0), 49, -1)
att_feats = att_feats.unsqueeze(1).expand(*((att_feats.size(0), opt.seq_per_img,) + att_feats.size(
)[1:])).contiguous().view((att_feats.size(0) * opt.seq_per_img), -1, att_feats.size()[-1])
fc_feats = fc_feats.unsqueeze(1).expand(*((fc_feats.size(0), opt.seq_per_img,) + fc_feats.size(
)[1:])).contiguous().view(*((fc_feats.size(0) * opt.seq_per_img,) + fc_feats.size()[1:]))
optimizer.zero_grad()
if opt.finetune_cnn_after != -1 and epoch >= opt.finetune_cnn_after:
cnn_optimizer.zero_grad()
model_out = dp_lw_model(fc_feats, att_feats, labels, masks, att_masks,
data['gts'], torch.arange(0, len(data['gts'])), sc_flag)
loss = model_out['loss'].mean()
# loss.backward()
# utils.clip_gradient(optimizer, opt.grad_clip)
# optimizer.step()
if opt.finetune_cnn_after != -1 and epoch >= opt.finetune_cnn_after:
utils.clip_gradient(cnn_optimizer, opt.grad_clip)
cnn_optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}"
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}"
.format(iteration, epoch, model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer,
'train_loss', train_loss, iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer,
'learning_rate', opt.current_lr, iteration)
add_summary_value(
tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(
tb_summary_writer, 'avg_reward', model_out['reward'].mean(), iteration)
loss_history[iteration] = train_loss if not sc_flag else model_out['reward'].mean(
)
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val',
'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
cnn_model, model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer,
'validation loss', val_loss, iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = - val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
save_checkpoint(model, cnn_model, infos,
optimizer, cnn_optimizer, histories)
if opt.save_history_ckpt:
save_checkpoint(model, cnn_model, infos, optimizer, cnn_optimizer,
append=str(iteration))
if best_flag:
save_checkpoint(model, cnn_model, infos,
optimizer, cnn_optimizer, append='best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, cnn_model, infos, optimizer, cnn_optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
# test model
test_kwargs = {'split': 'test',
'dataset': opt.input_json}
test_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
cnn_model, model, lw_model.crit, loader, test_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer,
'test loss', val_loss, iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
def train(opt):
print(opt)
# To reproduce training results
init_seed()
# Image Preprocessing
# For normalization, see https://github.com/pytorch/vision#models
transform = transforms.Compose([
transforms.RandomHorizontalFlip(),
transforms.RandomRotation(degrees=10),
transforms.ToTensor(),
transforms.Normalize((0.485, 0.456, 0.406),(0.229, 0.224, 0.225))
])
# Deal with feature things before anything
opt.use_fc, opt.use_att = utils.if_use_feat(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt, transform=transform)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '-best.pkl'), 'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = ["caption_model", "rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[
checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.vocab = loader.get_vocab()
if torch.cuda.is_available():
model = models.setup(opt).cuda()
else:
model = models.setup(opt)
del opt.vocab
dp_model = torch.nn.DataParallel(model)
lw_model = LossWrapper(model, opt)
dp_lw_model = torch.nn.DataParallel(lw_model)
#fgm = FGM(model)
cnn_model = ResnetBackbone()
if torch.cuda.is_available():
cnn_model = cnn_model.cuda()
if opt.start_from is not None:
model_dict = cnn_model.state_dict()
predict_dict = torch.load(os.path.join(opt.start_from, 'cnn_model-best.pth'))
model_dict = {k: predict_dict["module."+k] for k, _ in model_dict.items() if "module."+ k in predict_dict}
cnn_model.load_state_dict(model_dict)
cnn_model = torch.nn.DataParallel(cnn_model)
epoch_done = True
# Assure in training mode
dp_lw_model.train()
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model, factor=opt.noamopt_factor, warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer-best.pth')))
def save_checkpoint(model, cnn_model, infos, optimizer, histories=None, append=''):
if len(append) > 0:
append = '-' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
#Transformer model
checkpoint_path = os.path.join(opt.checkpoint_path, 'model%s.pth' % (append))
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
#CNN model
checkpoint_path = os.path.join(opt.checkpoint_path, 'cnn_model%s.pth' % (append))
if not os.path.exists(checkpoint_path):
torch.save(cnn_model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer%s.pth' % (append))
torch.save(optimizer.state_dict(), optimizer_path)
with open(os.path.join(opt.checkpoint_path, 'infos_' + opt.id + '%s.pkl' % (append)), 'wb') as f:
utils.pickle_dump(infos, f)
if histories:
with open(os.path.join(opt.checkpoint_path, 'histories_' + opt.id + '%s.pkl' % (append)), 'wb') as f:
utils.pickle_dump(histories, f)
cnn_after = 3
try:
while True:
if epoch_done:
if opt.fix_cnn or epoch < cnn_after:
for p in cnn_model.parameters():
p.requires_grad = False
cnn_model.eval()
cnn_optimizer = None
else:
for p in cnn_model.parameters():
p.requires_grad = True
# Fix the first few layers:
for module in cnn_model._modules['module']._modules['resnet_conv'][:5]._modules.values():
for p in module.parameters():
p.requires_grad = False
cnn_model.train()
# Constructing CNN parameters for optimization, only fine-tuning higher layers
cnn_optimizer = torch.optim.Adam(
(filter(lambda p: p.requires_grad, cnn_model.parameters())),
lr=2e-6 if (opt.self_critical_after != -1 and epoch >= opt.self_critical_after) else 5e-5, betas=(0.8, 0.999))
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac, opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
if iteration % opt.losses_log_every == 0:
print('Read data:', time.time() - start)
if torch.cuda.is_available():
torch.cuda.synchronize()
start = time.time()
if torch.cuda.is_available():
data['att_feats'] = cnn_model( data['att_feats'].cuda())
else:
data['att_feats'] = cnn_model( data['att_feats'] )
data['att_feats'] = repeat_feat(data['att_feats'])
tmp = [data['fc_feats'], data['att_feats'], data['labels'], data['masks'], data['att_masks']]
if torch.cuda.is_available():
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
if cnn_optimizer is not None:
cnn_optimizer.zero_grad()
# if epoch >= cnn_after:
# att_feats.register_hook(save_grad("att_feats"))
model_out = dp_lw_model(fc_feats, att_feats, labels, masks, att_masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag)
loss = model_out['loss'].mean()
loss.backward()
#loss.backward(retain_graph=True)
# adversarial training
#fgm.attack(emb_name='model.tgt_embed.0.lut.weight')
#adv_out = dp_lw_model(fc_feats, att_feats, labels, masks, att_masks, data['gts'],
# torch.arange(0, len(data['gts'])), sc_flag)
#adv_loss = adv_out['loss'].mean()
#adv_loss.backward()
#fgm.restore(emb_name="model.tgt_embed.0.lut.weight")
# utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
if cnn_optimizer is not None:
cnn_optimizer.step()
train_loss = loss.item()
if torch.cuda.is_available():
torch.cuda.synchronize()
end = time.time()
if not sc_flag and iteration % opt.losses_log_every == 0:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
elif iteration % opt.losses_log_every == 0:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward', model_out['reward'].mean(), iteration)
loss_history[iteration] = train_loss if not sc_flag else model_out['reward'].mean()
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val',
'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
eval_kwargs["cnn_model"] = cnn_model
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = - val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
save_checkpoint(model, cnn_model, infos, optimizer, histories)
if opt.save_history_ckpt:
save_checkpoint(model, cnn_model, infos, optimizer, append=str(iteration))
if best_flag:
save_checkpoint(model, cnn_model, infos, optimizer, append='best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, cnn_model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
loader = Loader(opt)
infos = {}
histories = {}
Model = model.setup(opt).cuda()
LW_model = LossWrapper(Model, opt)
# DP_lw_model = torch.nn.DataParallel(LW_model)
LW_model.train()
optimizer = utils.build_optimizer(Model.parameters(), opt)
if opt.start_from is not None:
with open(os.path.join(opt.start_from, 'infos-best.pkl'), 'rb') as f:
infos = utils.pickle_load(f)
if os.path.isfile(os.path.join(opt.start_from, 'histories-best.pkl')):
with open(os.path.join(opt.start_from, 'histories-best.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
if os.path.isfile(os.path.join(opt.start_from, 'optimizer-best.pth')):
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer-best.pth')))
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['opt'] = opt
infos['label2id'] = load_label(opt.input_label2id)
iteration = infos.get('iter', '0')
epoch = infos.get('epoch', '0')
best_val_score = infos.get('best_val_score', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
epoch_done = True
best_epoch = -1
try:
while True:
if epoch_done:
iteration = 0
if epoch != 0:
predictions, targets, _ ,metrics = eval_utils.evaluate(Model, loader, infos['label2id'], opt.eval_batch_size, opt.rel_num, 'dev')
val_result_history[iteration] = {'predictions': predictions, 'metrics': metrics, 'targets': targets}
#print('dev res: ', metrics)
current_score = metrics['F1']
histories['c'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
best_flag = False
if current_score > best_val_score:
best_epoch = epoch
best_val_score = current_score
best_flag = True
infos['best_val_score'] = best_val_score
save_checkpoint(Model, infos, optimizer, histories)
if best_flag:
save_checkpoint(Model, infos, optimizer, append='best')
epoch_done = False
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
start = time.time()
data = loader.get_batch_train(opt.batch_size)
#data = sorted(data, key=lambda x: x[-1], reverse=True)
wrapped = data[-1]
data = data[:-1]
#print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
data = [t.cuda() for t in data]
sents, rels, labels, poses, chars, sen_lens = data
if not opt.use_char:
chars = None
if not opt.use_pos:
poses = None
mask = torch.zeros(sents.size()).cuda()
for i in range(sents.size(0)):
mask[i][:sen_lens[i]] = 1
mask2 = torch.where(labels == 8, torch.ones_like(sents), torch.ones_like(sents)*10).cuda()
mask2 = mask2.float() * mask.float()
optimizer.zero_grad()
sum_loss = LW_model(sents, sen_lens, rels, mask, labels, mask2, poses, chars)
loss = sum_loss/sents.shape[0]
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
if iteration % 200 == 0:
end = time.time()
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
iteration += 1
if wrapped:
epoch += 1
epoch_done = True
infos['iter'] = iteration
infos['epoch'] = epoch
if iteration % opt.save_loss_every == 0:
loss_history[iteration] = train_loss
lr_history[iteration] = opt.current_lr
if opt.max_epoch != -1 and epoch >= opt.max_epoch:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(Model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
if vars(opt).get('start_from', None) is not None:
opt.checkpoint_path = opt.start_from
opt.id = opt.checkpoint_path.split('/')[-1]
print('Point to folder: {}'.format(opt.checkpoint_path))
else:
opt.id = datetime.datetime.now().strftime(
'%Y%m%d_%H%M%S') + '_' + opt.caption_model
opt.checkpoint_path = os.path.join(opt.checkpoint_path, opt.id)
if not os.path.exists(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
print('Create folder: {}'.format(opt.checkpoint_path))
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
# opt.use_att = False
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader_UP(opt)
opt.vocab_size = loader.vocab_size
if opt.use_rela == 1:
opt.rela_dict_size = loader.rela_dict_size
opt.seq_length = loader.seq_length
use_rela = getattr(opt, 'use_rela', 0)
try:
tb_summary_writer = tf and tf.compat.v1.summary.FileWriter(
opt.checkpoint_path)
except:
print('Set tensorboard error!')
pdb.set_trace()
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.checkpoint_path, 'infos.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.checkpoint_path, 'histories.pkl')):
with open(os.path.join(opt.checkpoint_path, 'histories.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
# dp_model = torch.nn.DataParallel(model)
# dp_model = torch.nn.DataParallel(model, [0,2,3])
dp_model = model
print('### Model summary below###\n {}\n'.format(str(model)))
model_params = sum(p.numel() for p in model.parameters()
if p.requires_grad)
print('model parameter:{}'.format(model_params))
update_lr_flag = True
# Assure in training mode
dp_model.train()
parameters = model.named_children()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(
filter(lambda p: p.requires_grad, model.parameters()), opt)
optimizer.zero_grad()
accumulate_iter = 0
train_loss = 0
reward = np.zeros([1, 1])
while True:
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch(opt.train_split)
# print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
fc_feats = None
att_feats = None
att_masks = None
ssg_data = None
rela_data = None
if getattr(opt, 'use_ssg', 0) == 1:
if getattr(opt, 'use_isg', 0) == 1:
tmp = [
data['fc_feats'], data['labels'], data['masks'],
data['att_feats'], data['att_masks'],
data['isg_rela_matrix'], data['isg_rela_masks'],
data['isg_obj'], data['isg_obj_masks'], data['isg_attr'],
data['isg_attr_masks'], data['ssg_rela_matrix'],
data['ssg_rela_masks'], data['ssg_obj'],
data['ssg_obj_masks'], data['ssg_attr'],
data['ssg_attr_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, labels, masks, att_feats, att_masks, \
isg_rela_matrix, isg_rela_masks, isg_obj, isg_obj_masks, isg_attr, isg_attr_masks, \
ssg_rela_matrix, ssg_rela_masks, ssg_obj, ssg_obj_masks, ssg_attr, ssg_attr_masks = tmp
# image graph domain
isg_data = {}
isg_data['att_feats'] = att_feats
isg_data['att_masks'] = att_masks
isg_data['isg_rela_matrix'] = isg_rela_matrix
isg_data['isg_rela_masks'] = isg_rela_masks
isg_data['isg_obj'] = isg_obj
isg_data['isg_obj_masks'] = isg_obj_masks
isg_data['isg_attr'] = isg_attr
isg_data['isg_attr_masks'] = isg_attr_masks
# text graph domain
ssg_data = {}
ssg_data['ssg_rela_matrix'] = ssg_rela_matrix
ssg_data['ssg_rela_masks'] = ssg_rela_masks
ssg_data['ssg_obj'] = ssg_obj
ssg_data['ssg_obj_masks'] = ssg_obj_masks
ssg_data['ssg_attr'] = ssg_attr
ssg_data['ssg_attr_masks'] = ssg_attr_masks
else:
tmp = [
data['fc_feats'], data['ssg_rela_matrix'],
data['ssg_rela_masks'], data['ssg_obj'],
data['ssg_obj_masks'], data['ssg_attr'],
data['ssg_attr_masks'], data['labels'], data['masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, ssg_rela_matrix, ssg_rela_masks, ssg_obj, ssg_obj_masks, ssg_attr, ssg_attr_masks, labels, masks = tmp
ssg_data = {}
ssg_data['ssg_rela_matrix'] = ssg_rela_matrix
ssg_data['ssg_rela_masks'] = ssg_rela_masks
ssg_data['ssg_obj'] = ssg_obj
ssg_data['ssg_obj_masks'] = ssg_obj_masks
ssg_data['ssg_attr'] = ssg_attr
isg_data = None
ssg_data['ssg_attr_masks'] = ssg_attr_masks
else:
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
if not sc_flag:
# loss = crit(dp_model(model_zh,model_en,itow_zh,itow, fc_feats, labels, isg_data, ssg_data), labels[:, 1:], masks[:, 1:])
# print('ssg:')
# print(ssg_data['ssg_obj'])
# print('predict:')
# print(dp_model(fc_feats, labels, isg_data, ssg_data))
# print('label:')
# print(labels[:, 1:])
loss = crit(dp_model(fc_feats, labels, isg_data, ssg_data),
labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
isg_data,
ssg_data,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, isg_data,
ssg_data, data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
accumulate_iter = accumulate_iter + 1
loss = loss / opt.accumulate_number
loss.backward()
if accumulate_iter % opt.accumulate_number == 0:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
optimizer.zero_grad()
iteration += 1
accumulate_iter = 0
train_loss = loss.item() * opt.accumulate_number
end = time.time()
if not sc_flag:
print("{}/{}/{}|train_loss={:.3f}|time/batch={:.3f}" \
.format(opt.id, iteration, epoch, train_loss, end - start))
else:
print("{}/{}/{}|avg_reward={:.3f}|time/batch={:.3f}" \
.format(opt.id, iteration, epoch, np.mean(reward[:, 0]), end - start))
torch.cuda.synchronize()
# Update the iteration and epoch
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0) and (iteration != 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
# if (iteration %2 == 0) and (iteration != 0):
if (iteration % opt.save_checkpoint_every == 0) and (iteration != 0):
# eval model
if use_rela:
eval_kwargs = {
'split': 'val',
'dataset': opt.input_json,
'use_real': 1
}
else:
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
# val_loss, predictions, lang_stats = eval_utils.eval_split(model_zh,model_en,itow_zh,itow, dp_model, crit, loader, eval_kwargs)
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if True: # if true
save_id = iteration / opt.save_checkpoint_every
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(os.path.join(opt.checkpoint_path, 'infos.pkl'),
'wb') as f:
cPickle.dump(infos, f)
with open(os.path.join(opt.checkpoint_path, 'histories.pkl'),
'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos-best.pkl'), 'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def load_info(loader, start_from, checkpoint_path, p_flag):
infos = {}
histories = {}
if start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(checkpoint_path, 'infos.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
# need_be_same = ["caption_model", "rnn_type", "rnn_size", "num_layers"]
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(checkpoint_path, 'histories.pkl')):
with open(os.path.join(checkpoint_path, 'histories.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.p_flag = p_flag
if getattr(opt, 'p_flag', 0) == 0:
opt.caption_model = opt.caption_model_zh
else:
opt.caption_model = opt.caption_model_en
model = models.setup(opt).cuda()
# dp_model = torch.nn.DataParallel(model)
# dp_model = torch.nn.DataParallel(model, [0,2,3])
dp_model = model
update_lr_flag = True
# Assure in training mode
dp_model.train()
parameters = model.named_children()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(
filter(lambda p: p.requires_grad, model.parameters()), opt)
optimizer.zero_grad()
accumulate_iter = 0
train_loss = 0
train_loss_kl = 0
train_loss_all = 0
reward = np.zeros([1, 1])
return loader,iteration,epoch,val_result_history,loss_history,lr_history,ss_prob_history,best_val_score,\
infos,histories,update_lr_flag,model,dp_model,parameters,crit,rl_crit,optimizer,accumulate_iter,train_loss,reward,train_loss_kl,train_loss_all
def train(opt):
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from_path is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from_path,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from_path,
'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from_path,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
#print(val_result_history.get(3000))
#exit(0)
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
no = sum(p.numel() for p in model.parameters())
pytorch_total_params = sum(p.numel() for p in model.parameters()
if p.requires_grad)
print("Trainable Params:" + str(pytorch_total_params))
print("Total Params:" + str(no))
#exit(0)
dp_model = torch.nn.DataParallel(model)
epoch_done = True
# Assure in training mode
dp_model.train()
if (opt.use_obj_mcl_loss == 1):
mcl_crit = utils.MultiLabelClassification()
if opt.label_smoothing > 0:
crit = utils.LabelSmoothing(smoothing=opt.label_smoothing)
else:
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from_path', None) is not None and os.path.isfile(
os.path.join(opt.start_from_path, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from_path, 'optimizer.pth')))
time_epoch_start = time.time()
data_time_sum = 0
batch_time_sum = 0
while True:
if epoch_done:
torch.cuda.synchronize()
time_epoch_end = time.time()
time_elapsed = (time_epoch_end - time_epoch_start)
print('[DEBUG] Epoch Time: ' + str(time_elapsed))
print('[DEBUG] Sum Data Time: ' + str(data_time_sum))
print('[DEBUG] Sum Batch Time: ' + str(batch_time_sum))
#if epoch==1:
# exit(0)
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
print('Read data:', time.time() - start)
data_time_sum += time.time() - start
torch.cuda.synchronize()
start = time.time()
if (opt.use_obj_mcl_loss == 0):
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
else:
if opt.use_obj_att and opt.use_seg_feat:
tmp = [
data['fc_feats'], data['att_feats'], data['obj_att_feats'],
data['seg_feat_feats'], data['labels'], data['masks'],
data['obj_labels'], data['att_masks'],
data['obj_att_masks'], data['seg_feat_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, att_feats, obj_att_feats, seg_feat_feats, labels, masks, obj_labels, att_masks, obj_att_masks, seg_feat_masks = tmp
elif not opt.use_obj_att and opt.use_seg_feat:
tmp = [
data['fc_feats'], data['att_feats'],
data['seg_feat_feats'], data['labels'], data['masks'],
data['obj_labels'], data['att_masks'],
data['seg_feat_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, att_feats, seg_feat_feats, labels, masks, obj_labels, att_masks, seg_feat_masks = tmp
elif not opt.use_obj_att and not opt.use_seg_feat:
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['obj_labels'], data['att_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, att_feats, labels, masks, obj_labels, att_masks = tmp
elif opt.use_obj_att and not opt.use_seg_feat:
tmp = [
data['fc_feats'], data['att_feats'], data['obj_att_feats'],
data['labels'], data['masks'], data['obj_labels'],
data['att_masks'], data['obj_att_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, att_feats, obj_att_feats, labels, masks, obj_labels, att_masks, obj_att_masks = tmp
optimizer.zero_grad()
if (opt.use_obj_mcl_loss == 0):
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks, data,
gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
else:
if opt.use_obj_att and opt.use_seg_feat:
if not sc_flag:
logits, out = dp_model(
fc_feats, [att_feats, obj_att_feats, seg_feat_feats],
labels, [att_masks, obj_att_masks, seg_feat_masks])
caption_loss = crit(logits, labels[:, 1:], masks[:, 1:])
obj_loss = mcl_crit(out, obj_labels)
loss = opt.lambda_caption * caption_loss + opt.lambda_obj * obj_loss
#loss = 0.1*caption_loss + obj_loss
#loss = caption_loss + 0 * obj_loss
else:
gen_result, sample_logprobs = dp_model(
fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks,
data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
elif not opt.use_obj_att and opt.use_seg_feat:
if not sc_flag:
logits, out = dp_model(fc_feats,
[att_feats, seg_feat_feats], labels,
[att_masks, seg_feat_masks])
caption_loss = crit(logits, labels[:, 1:], masks[:, 1:])
obj_loss = mcl_crit(out, obj_labels)
loss = opt.lambda_caption * caption_loss + opt.lambda_obj * obj_loss
#loss = caption_loss + 0 * obj_loss
else:
gen_result, sample_logprobs = dp_model(
fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks,
data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
if not opt.use_obj_att and not opt.use_seg_feat:
if not sc_flag:
logits, out = dp_model(fc_feats, att_feats, labels,
att_masks)
caption_loss = crit(logits, labels[:, 1:], masks[:, 1:])
obj_loss = mcl_crit(out, obj_labels)
loss = opt.lambda_caption * caption_loss + opt.lambda_obj * obj_loss
#loss = caption_loss + 0 * obj_loss
else:
gen_result, sample_logprobs = dp_model(
fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks,
data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
elif opt.use_obj_att and not opt.use_seg_feat:
if not sc_flag:
logits, out = dp_model(fc_feats,
[att_feats, obj_att_feats], labels,
[att_masks, obj_att_masks])
caption_loss = crit(logits, labels[:, 1:], masks[:, 1:])
obj_loss = mcl_crit(out, obj_labels)
loss = 0.1 * caption_loss + obj_loss
#loss = caption_loss + 0 * obj_loss
else:
gen_result, sample_logprobs = dp_model(
fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats,
att_feats, att_masks,
data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
batch_time_sum += end - start
if not sc_flag:
if (opt.use_obj_mcl_loss == 1):
print("iter {} (epoch {}), train_loss = {:.3f}, caption_loss = {:.3f}, object_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, caption_loss.item(), obj_loss.item(), end - start))
else:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
if (opt.use_obj_mcl_loss == 1):
add_summary_value(tb_summary_writer, 'obj_loss',
obj_loss.item(), iteration)
add_summary_value(tb_summary_writer, 'caption_loss',
caption_loss.item(), iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
orig_batch_size = opt.batch_size
opt.batch_size = 1
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
loader.batch_size = eval_kwargs.get('batch_size', 1)
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
opt.batch_size = orig_batch_size
loader.batch_size = orig_batch_size
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if True: # if true
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'),
'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
# Deal with feature things before anything
opt.use_fc, opt.use_att = utils.if_use_feat(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
#opt.ss_prob=0.0
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos_'+opt.id+'.pkl'), 'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same=["caption_model", "rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(opt)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl')):
with open(os.path.join(opt.start_from, 'histories_'+opt.id+'.pkl'), 'rb') as f:
histories = utils.pickle_load(f)
else:
infos['iter'] = 0
infos['epoch'] = 0
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['vocab'] = loader.get_vocab()
infos['pix_perss']=loader.get_personality()
infos['opt'] = opt
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
print("current epoch: ",epoch)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
opt.vocab = loader.get_vocab()
opt.xpersonality=loader.get_personality()
if opt.use_joint==0:
#torch.cuda.set_device(0)
model = models.setup(opt).cuda()
elif opt.use_joint==1:
model = models.JointModel(opt)
model.cuda()
#model=models.setup(opt)
del opt.vocab
if opt.start_from is not None:
opt.model=os.path.join(opt.start_from, 'model'+'.pth')
model.load_state_dict(torch.load(opt.model))
dp_model = torch.nn.DataParallel(model)
lw_model = LossWrapper(model, opt)
dp_lw_model = torch.nn.DataParallel(lw_model)
#dp_lw_model=LossWrapper(model, opt) # this is for no cuda
epoch_done = True
# Assure in training mode
#dp_lw_model=lw_model
dp_lw_model.train()
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model, factor=opt.noamopt_factor, warmup=opt.noamopt_warmup)
optimizer._step = iteration
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer([p for p in model.parameters() if p.requires_grad], opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer([p for p in model.parameters() if p.requires_grad], opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(os.path.join(opt.start_from,"optimizer.pth")):
optimizer.load_state_dict(torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
else:
print('Optimizer param group number not matched? There must be new parameters. Reinit the optimizer.')
def save_checkpoint(model, infos, optimizer, histories=None, append=''):
if len(append) > 0:
append = '-' + append
# if checkpoint_path doesn't exist
if not os.path.isdir(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
checkpoint_path = os.path.join(opt.checkpoint_path, 'model%s.pth' %(append))
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer%s.pth' %(append))
torch.save(optimizer.state_dict(), optimizer_path)
with open(os.path.join(opt.checkpoint_path, 'infos_'+opt.id+'%s.pkl' %(append)), 'wb') as f:
utils.pickle_dump(infos, f)
if histories:
with open(os.path.join(opt.checkpoint_path, 'histories_'+opt.id+'%s.pkl' %(append)), 'wb') as f:
utils.pickle_dump(histories, f)
try:
while True:
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate ** frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac, opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
# Assign retrieval loss weight
if epoch > opt.retrieval_reward_weight_decay_start and opt.retrieval_reward_weight_decay_start >= 0:
frac = (epoch - opt.retrieval_reward_weight_decay_start) // opt.retrieval_reward_weight_decay_every
model.retrieval_reward_weight = opt.retrieval_reward_weight * (opt.retrieval_reward_weight_decay_rate ** frac)
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
with torch.autograd.set_detect_anomaly(True):
tmp = [data['fc_feats'], data['att_feats'],data['densecap'], data['labels'], data['masks'], data['att_masks'], data['personality']]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats,densecap, labels, masks, att_masks,personality = tmp
optimizer.zero_grad()
model_out = dp_lw_model(fc_feats, att_feats,densecap, labels, masks, att_masks,personality, data['gts'], torch.arange(0, len(data['gts'])), sc_flag)
loss = model_out['loss'].mean()
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f},train_loss = {:.3f}" \
.format(iteration, epoch, model_out['reward'].mean(), end - start,train_loss))
if opt.use_joint==1:
for k, v in model.loss().items():
prt_str += "{} = {:.3f} ".format(k, v)
print(prt_str)
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward', model_out['reward'].mean(), iteration)
loss_history[iteration] = train_loss if not sc_flag else model_out['reward'].mean()
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val',
'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration)
if lang_stats is not None:
for k,v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
if opt.language_eval == 1:
if opt.use_joint==1:
current_score = lang_stats['SPICE']*100
elif opt.use_joint==0:
current_score = lang_stats['CIDEr'] # could use SPICE
else:
if opt.use_joint==0:
current_score = - val_loss
elif opt.use_joint==1:
current_score= - val_loss['loss_cap']
if opt.use_joint==1:
current_score_vse = val_loss.get(opt.vse_eval_criterion, 0)*100
best_flag = False
best_flag_vse= False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
if opt.use_joint==1:
if best_val_score_vse is None or current_score_vse > best_val_score_vse:
best_val_score_vse = current_score_vse
best_flag_vse = True
infos['best_val_score_vse'] = best_val_score_vse
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
save_checkpoint(model, infos, optimizer, histories)
if opt.save_history_ckpt:
save_checkpoint(model, infos, optimizer, append=str(iteration))
if best_flag:
save_checkpoint(model, infos, optimizer, append='best')
if best_flag_vse:
save_checkpoint(model, infos, optimizer, append='vse-best')
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
save_checkpoint(model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(log_dir=opt.checkpoint_path)
print(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
print(os.getcwd())
with open(
os.path.join(os.getcwd(), opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
# dp_model = torch.nn.DataParallel(model)
dp_model = model
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
while True:
# # [added] reproduce straight line learning rate decay in supplementary
# # ---- the original paper used 60k iters
# # ---- if lr goes to zero just stay at the last lr
# linear_lr = -(iteration+1)*opt.learning_rate/60000 + opt.learning_rate
# if linear_lr <= 0:
# pass
# else:
# opt.current_lr = linear_lr
# utils.set_lr(optimizer, opt.current_lr)
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
start = time.time()
# Load data from train split (0)
# [naxin] knn_data is the nearest neighbour batch, the format is identical to data
data, knn_data = loader.get_batch('train')
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['masks'],
data['att_masks']
]
# tmp = [knn_data['fc_feats'], knn_data['att_feats'], knn_data['labels'], knn_data['masks'], knn_data['att_masks']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, att_feats,
att_masks, data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs, eval_knn=opt.use_knn)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if True: # if true
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'),
'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
import random
random.seed(0)
torch.manual_seed(0)
torch.cuda.manual_seed_all(0)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
np.random.seed(0)
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
if opt.use_box: opt.att_feat_size = opt.att_feat_size + 5
from dataloader_pair import DataLoader
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
if opt.log_to_file:
if os.path.exists(os.path.join(opt.checkpoint_path, 'log')):
suffix = time.strftime("%Y-%m-%d %X", time.localtime())
print('Warning !!! %s already exists ! use suffix ! ' %
os.path.join(opt.checkpoint_path, 'log'))
sys.stdout = open(
os.path.join(opt.checkpoint_path, 'log' + suffix), "w")
else:
print('logging to file %s' %
os.path.join(opt.checkpoint_path, 'log'))
sys.stdout = open(os.path.join(opt.checkpoint_path, 'log'), "w")
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
if os.path.isfile(opt.start_from):
with open(os.path.join(opt.infos)) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
else:
if opt.load_best != 0:
print('loading best info')
with open(
os.path.join(opt.start_from,
'infos_' + opt.id + '-best.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
else:
with open(
os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl'), 'rb') as f:
try:
histories = cPickle.load(f)
except:
print('load history error!')
histories = {}
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
start_epoch = epoch
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model)
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
#Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
if opt.caption_model == 'att2in2p':
optimized = [
'logit2', 'ctx2att2', 'core2', 'prev_sent_emb', 'prev_sent_wrap'
]
optimized_param = []
optimized_param1 = []
for name, param in model.named_parameters():
second = False
for n in optimized:
if n in name:
print('second', name)
optimized_param.append(param)
second = True
if 'embed' in name:
print('all', name)
optimized_param1.append(param)
optimized_param.append(param)
elif not second:
print('first', name)
optimized_param1.append(param)
while True:
if opt.val_only:
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
print('start evaluating')
val_loss, predictions, lang_stats = eval_utils_pair.eval_split(
dp_model, crit, loader, eval_kwargs)
exit(0)
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
tmp = [
data['pair_fc_feats'], data['pair_att_feats'], data['pair_labels'],
data['pair_masks'], data['pair_att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
masks = masks.float()
optimizer.zero_grad()
if not sc_flag:
if opt.onlysecond:
# only using the second sentence from a visual paraphrase pair. opt.caption_model should be a one-stage decoding model
loss = crit(
dp_model(fc_feats, att_feats, labels[:, 1, :], att_masks),
labels[:, 1, 1:], masks[:, 1, 1:])
loss1 = loss2 = loss / 2
elif opt.first:
# using the first sentence
tmp = [
data['first_fc_feats'], data['first_att_feats'],
data['first_labels'], data['first_masks'],
data['first_att_masks']
]
tmp = [
_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp
]
fc_feats, att_feats, labels, masks, att_masks = tmp
masks = masks.float()
loss = crit(
dp_model(fc_feats, att_feats, labels[:, :], att_masks),
labels[:, 1:], masks[:, 1:])
loss1 = loss2 = loss / 2
elif opt.onlyfirst:
# only using the second sentence from a visual paraphrase pair
loss = crit(
dp_model(fc_feats, att_feats, labels[:, 0, :], att_masks),
labels[:, 0, 1:], masks[:, 0, 1:])
loss1 = loss2 = loss / 2
else:
# proposed DCVP model, opt.caption_model should be att2inp
output1, output2 = dp_model(fc_feats, att_feats, labels,
att_masks, masks[:, 0, 1:])
loss1 = crit(output1, labels[:, 0, 1:], masks[:, 0, 1:])
loss2 = crit(output2, labels[:, 1, 1:], masks[:, 1, 1:])
loss = loss1 + loss2
else:
raise NotImplementedError
# Our DCVP model does not support self-critical sequence training
# We found that RL(SCST) with CIDEr reward will improve conventional metrics (BLEU, CIDEr, etc.)
# but harm diversity and descriptiveness
# Please refer to the paper for the details
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, loss1 = {:.3f}, loss2 = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, loss.item(), loss1.item(), loss2.item(), end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), end - start))
sys.stdout.flush()
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils_pair.eval_split(
dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if True: # if true
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path,
'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'),
'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
checkpoint_path = os.path.join(
opt.checkpoint_path, 'model' + str(iteration) + '.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(
opt.checkpoint_path,
'infos_' + opt.id + '_' + str(iteration) + '.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
################################
# Build dataloader
################################
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
##########################
# Initialize infos
##########################
infos = {
'iter': 0,
'epoch': 0,
'loader_state_dict': None,
'vocab': loader.get_vocab(),
}
# Load old infos(if there is) and check if models are compatible
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'),
'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert getattr(saved_model_opt, checkme) == getattr(
opt, checkme
), "Command line argument and saved model disagree on '%s' " % checkme
infos['opt'] = opt
#########################
# Build logger
#########################
# naive dict logger
histories = defaultdict(dict)
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'),
'rb') as f:
histories.update(utils.pickle_load(f))
# tensorboard logger
tb_summary_writer = SummaryWriter(opt.checkpoint_path)
##########################
# Build model
##########################
opt.vocab = loader.get_vocab()
multi_models_list = []
for order in range(opt.number_of_models):
multi_models_list.append(models.setup(opt).cuda())
for order in range(opt.number_of_models):
multi_models_list.append(models.setup(opt).cuda())
for order in range(opt.number_of_models, 2 * opt.number_of_models):
for param in multi_models_list[order].parameters():
param.detach_()
for order in range(opt.number_of_models):
for param, param_ema in zip(
multi_models_list[order].parameters(),
multi_models_list[order + opt.number_of_models].parameters()):
param_ema.data = param.data.clone()
# multi_models = MultiModels(multi_models_list)
# multi_models_list.append(SenEncodeModel(opt).cuda())
multi_models = nn.ModuleList(multi_models_list)
del opt.vocab
# Load pretrained weights:
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'model.pth')):
multi_models.load_state_dict(
torch.load(os.path.join(opt.start_from, 'model.pth')))
# Wrap generation model with loss function(used for training)
# This allows loss function computed separately on each machine
lw_models = nn.ModuleList([
LossWrapper(multi_models[index], opt)
for index in range(opt.number_of_models)
])
kdlw_models = nn.ModuleList([
KDLossWrapper(multi_models[index], opt)
for index in range(opt.number_of_models)
])
lw_models_ema = nn.ModuleList([
LossWrapper(multi_models[opt.number_of_models + index], opt)
for index in range(opt.number_of_models)
])
kdlw_models_ema = nn.ModuleList([
KDLossWrapper(multi_models[opt.number_of_models + index], opt)
for index in range(opt.number_of_models)
])
# Wrap with dataparallel
dp_models = nn.ModuleList([
torch.nn.DataParallel(multi_models[index])
for index in range(opt.number_of_models)
])
dp_lw_models = nn.ModuleList([
torch.nn.DataParallel(lw_models[index])
for index in range(opt.number_of_models)
])
dp_kdlw_models = nn.ModuleList([
torch.nn.DataParallel(kdlw_models[index])
for index in range(opt.number_of_models)
])
dp_models_ema = nn.ModuleList([
torch.nn.DataParallel(multi_models[opt.number_of_models + index])
for index in range(opt.number_of_models)
])
dp_lw_models_ema = nn.ModuleList([
torch.nn.DataParallel(lw_models_ema[index])
for index in range(opt.number_of_models)
])
dp_kdlw_models_ema = nn.ModuleList([
torch.nn.DataParallel(kdlw_models_ema[index])
for index in range(opt.number_of_models)
])
##########################
# Build optimizer
##########################
if opt.noamopt:
assert opt.caption_model in [
'transformer', 'bert', 'm2transformer'
], 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(multi_models,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(multi_models.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(multi_models.parameters(), opt)
# Load the optimizer
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
##########################
# Build loss
##########################
# triplet_loss = nn.TripletMarginLoss()
#########################
# Get ready to start
#########################
iteration = infos['iter']
epoch = infos['epoch']
# For back compatibility
if 'iterators' in infos:
infos['loader_state_dict'] = {
split: {
'index_list': infos['split_ix'][split],
'iter_counter': infos['iterators'][split]
}
for split in [
'paired_train', 'unpaired_images_train',
'unpaired_captions_train', 'train', 'val', 'test'
]
}
loader.load_state_dict(infos['loader_state_dict'])
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
if opt.noamopt:
optimizer._step = iteration
# flag indicating finish of an epoch
# Always set to True at the beginning to initialize the lr or etc.
epoch_done = True
# Assure in training mode
dp_lw_models.train()
dp_kdlw_models.train()
dp_lw_models_ema.train()
dp_kdlw_models_ema.train()
# Build the ensemble model
# # Setup the model
model_ensemble = AttEnsemble(multi_models_list[opt.number_of_models:2 *
opt.number_of_models],
weights=None)
# model_ensemble.seq_length = 20
model_ensemble.cuda()
# model_ensemble.eval()
kd_model_outs_list = []
# Start training
try:
while True:
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer,
opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
for index in range(opt.number_of_models):
multi_models[index].ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
# If start structure loss training
if opt.structure_after != -1 and epoch >= opt.structure_after:
struc_flag = True
init_scorer(opt.cached_tokens)
else:
struc_flag = False
if epoch >= opt.paired_train_epoch:
opt.current_lambda_x = opt.hyper_parameter_lambda_x * \
(epoch - (opt.paired_train_epoch - 1)) /\
(opt.max_epochs - opt.paired_train_epoch)
opt.current_lambda_y = opt.hyper_parameter_lambda_y * \
(epoch - (opt.paired_train_epoch - 1)) / \
(opt.max_epochs - opt.paired_train_epoch)
epoch_done = False
start = time.time()
# Load data from train split (0)
if epoch < opt.language_pretrain_epoch:
data = loader.get_batch('unpaired_captions_train')
elif epoch < opt.paired_train_epoch:
data = loader.get_batch('paired_train')
else:
data = loader.get_batch('paired_train')
unpaired_data = loader.get_batch('unpaired_images_train')
unpaired_caption = loader.get_batch('unpaired_captions_train')
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
if epoch < opt.language_pretrain_epoch:
tmp = [
data['fc_feats'] * 0, data['att_feats'] * 0,
data['labels'], data['masks'], data['att_masks']
]
elif epoch < opt.paired_train_epoch:
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
else:
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks']
]
unpaired_tmp = [
unpaired_data['fc_feats'], unpaired_data['att_feats'],
unpaired_data['labels'], unpaired_data['masks'],
unpaired_data['att_masks']
]
unpaired_caption_tmp = [
unpaired_caption['fc_feats'] * 0,
unpaired_caption['att_feats'] * 0,
unpaired_caption['labels'], unpaired_caption['masks'],
unpaired_caption['att_masks']
]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
if epoch >= opt.paired_train_epoch:
unpaired_tmp = [
_ if _ is None else _.cuda() for _ in unpaired_tmp
]
unpaired_fc_feats, unpaired_att_feats, unpaired_labels, unpaired_masks, unpaired_att_masks = unpaired_tmp
unpaired_caption_tmp = [
_ if _ is None else _.cuda() for _ in unpaired_caption_tmp
]
unpaired_caption_fc_feats, unpaired_caption_att_feats, unpaired_caption_labels, unpaired_caption_masks, unpaired_caption_att_masks = unpaired_caption_tmp
unpaired_caption_fc_feats = unpaired_caption_fc_feats.repeat(
5, 1)
unpaired_caption_fc_feats = opt.std_pseudo_visual_feature * torch.randn_like(
unpaired_caption_fc_feats)
unpaired_caption_att_feats = unpaired_caption_att_feats.repeat(
5, 1, 1)
unpaired_caption_fc_feats.requires_grad = True
unpaired_caption_att_feats.requires_grad = True
unpaired_caption_labels = unpaired_caption_labels.reshape(
unpaired_caption_fc_feats.shape[0], -1)
unpaired_caption_masks = unpaired_caption_masks.reshape(
unpaired_caption_fc_feats.shape[0], -1)
optimizer.zero_grad()
if epoch < opt.language_pretrain_epoch:
language_loss = 0
model_outs_list = []
for index in range(opt.number_of_models):
model_out = dp_lw_models[index](
fc_feats, att_feats, labels, masks,
att_masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag, struc_flag)
model_outs_list.append(model_out)
language_loss += model_out['loss'].mean()
loss = language_loss
elif epoch < opt.paired_train_epoch:
language_loss = 0
model_outs_list = []
for index in range(opt.number_of_models):
model_out = dp_lw_models[index](
fc_feats, att_feats, labels, masks,
att_masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag, struc_flag)
model_outs_list.append(model_out)
language_loss += model_out['loss'].mean()
loss = language_loss
else:
language_loss = 0
model_outs_list = []
for index in range(opt.number_of_models):
model_out = dp_lw_models[index](
fc_feats, att_feats, labels, masks,
att_masks, data['gts'],
torch.arange(0, len(data['gts'])), sc_flag, struc_flag)
model_outs_list.append(model_out)
language_loss += model_out['loss'].mean()
loss = language_loss
# else:
# for unpaired image sentences
# # Setup the model
# model_ensemble = AttEnsemble(multi_models_list[:opt.number_of_models], weights=None)
# model_ensemble.seq_length = 16
# model_ensemble.cuda()
# model_ensemble.eval()
model_ensemble.eval()
eval_kwargs = dict()
eval_kwargs.update(vars(opt))
with torch.no_grad():
seq, seq_logprobs = model_ensemble(unpaired_fc_feats,
unpaired_att_feats,
unpaired_att_masks,
opt=eval_kwargs,
mode='sample')
# val_loss, predictions, lang_stats = eval_utils.eval_split(model_ensemble, lw_models[0].crit, loader,
# eval_kwargs)
# print('\n'.join([utils.decode_sequence(loader.get_vocab(), _['seq'].unsqueeze(0))[0] for _ in
# model_ensemble.done_beams[0]]))
# print('++' * 10)
# for ii in range(10):
# sents = utils.decode_sequence(loader.get_vocab(), seq[ii].unsqueeze(0))
# gt_sent = utils.decode_sequence(loader.get_vocab(), labels[ii,0].unsqueeze(0))
# a=1
model_ensemble.train()
model_ensemble_sudo_labels = labels.new_zeros(
(opt.batch_size, opt.beam_size,
eval_kwargs['max_length'] + 2))
model_ensemble_sudo_log_prob = masks.new_zeros(
(opt.batch_size,
opt.beam_size, eval_kwargs['max_length'] + 2,
len(loader.get_vocab()) + 1))
model_ensemble_sum_log_prob = masks.new_zeros(
(opt.batch_size, opt.beam_size))
for batch_index in range(opt.batch_size):
for beam_index in range(opt.beam_size):
# for beam_index in range(3):
pred = model_ensemble.done_beams[batch_index][
beam_index]['seq']
log_prob = model_ensemble.done_beams[batch_index][
beam_index]['logps']
model_ensemble_sudo_labels[batch_index, beam_index,
1:pred.shape[0] + 1] = pred
model_ensemble_sudo_log_prob[batch_index, beam_index,
1:pred.shape[0] +
1] = log_prob
model_ensemble_sum_log_prob[batch_index][
beam_index] = model_ensemble.done_beams[
batch_index][beam_index]['p']
# model_ensemble_prob = F.softmax(model_ensemble_sum_log_prob)
data_ensemble_sudo_gts = list()
for data_ensemble_sudo_gts_index in range(
model_ensemble_sudo_labels.shape[0]):
data_ensemble_sudo_gts.append(model_ensemble_sudo_labels[
data_ensemble_sudo_gts_index, :,
1:-1].data.cpu().numpy())
# generated_sentences = list()
# for i in range(unpaired_fc_feats.shape[0]):
# generated_sentences.append(
# [utils.decode_sequence(loader.get_vocab(), _['seq'].unsqueeze(0))[0] for _ in
# model_ensemble.done_beams[i]])
#
# pos_tag_results = list()
# for i in range(unpaired_fc_feats.shape[0]):
# generated_sentences_i = generated_sentences[i]
# pos_tag_results_i = []
# for text in generated_sentences_i:
# text_tokenize = nltk.word_tokenize(text)
# pos_tag_results_i_jbeam = []
# for vob, vob_type in nltk.pos_tag(text_tokenize):
# if vob_type == 'NN' or vob_type == 'NNS':
# pos_tag_results_i_jbeam.append(vob)
# pos_tag_results_i.append(pos_tag_results_i_jbeam)
# pos_tag_results.append(pos_tag_results_i)
# for i in range(fc_feats.shape[0]):
# print('\n'.join([utils.decode_sequence(loader.get_vocab(), _['seq'].unsqueeze(0))[0] for _ in
# model_ensemble.done_beams[i]]))
# print('--' * 10)
# dets = data['dets']
#
# promising_flag = labels.new_zeros(opt.batch_size, opt.beam_size)
# for batch_index in range(opt.batch_size):
# dets_batch = dets[batch_index]
# for beam_index in range(opt.beam_size):
# indicator = [0] * len(dets_batch)
# pos_tag_batch_beam = pos_tag_results[batch_index][beam_index]
# for pos_tag_val in pos_tag_batch_beam:
# for ii in range(len(dets_batch)):
# possible_list = vob_transform_list[dets_batch[ii]]
# if pos_tag_val in possible_list:
# indicator[ii] = 1
# if sum(indicator) == len(dets_batch) or sum(indicator) >= 2:
# promising_flag[batch_index, beam_index] = 1
#
# # model_ensemble_sudo_log_prob = model_ensemble_sudo_log_prob * promising_flag.unsqueeze(-1).unsqueeze(-1)
# model_ensemble_sudo_labels = model_ensemble_sudo_labels * promising_flag.unsqueeze(-1)
#sudo_masks_for_model = sudo_masks_for_model.detach()
distilling_loss = 0
# We use the random study machinism
who_to_study = random.randint(0, opt.number_of_models - 1)
# for index in range(opt.number_of_models):
# model_out = dp_kdlw_models[index](unpaired_fc_feats, unpaired_att_feats, model_ensemble_sudo_labels,
# model_ensemble_sudo_log_prob, att_masks, data_ensemble_sudo_gts,
# torch.arange(0, len(data_ensemble_sudo_gts)), sc_flag,
# struc_flag, model_ensemble_sum_log_prob)
# kd_model_outs_list.append(model_out)
model_out = dp_kdlw_models[who_to_study](
unpaired_fc_feats, unpaired_att_feats,
model_ensemble_sudo_labels, model_ensemble_sudo_log_prob,
att_masks, data_ensemble_sudo_gts,
torch.arange(0, len(data_ensemble_sudo_gts)), sc_flag,
struc_flag, model_ensemble_sum_log_prob)
# kd_model_outs_list.append(model_out)
distilling_loss += model_out['loss'].mean()
loss += opt.number_of_models * opt.current_lambda_x * distilling_loss
###################################################################
# use unlabelled captions
# simple_sgd = utils.gradient_descent(unpaired_caption_fc_feats, stepsize=1e3)
simple_sgd = utils.gradient_descent_adagrad(
unpaired_caption_fc_feats, stepsize=1)
gts_tmp = unpaired_caption['gts']
new_gts = []
for ii in range(len(data['gts'])):
for jj in range(gts_tmp[ii].shape[0]):
new_gts.append(gts_tmp[ii][jj])
unpaired_caption['gts'] = new_gts
for itr in range(opt.inner_iteration):
unlabelled_caption_model_out = dp_lw_models_ema[
itr % opt.number_of_models](
unpaired_caption_fc_feats,
unpaired_caption_att_feats,
unpaired_caption_labels, unpaired_caption_masks,
unpaired_caption_att_masks,
unpaired_caption['gts'],
torch.arange(0, len(unpaired_caption['gts'])),
sc_flag, struc_flag)
unlabelled_caption_loss = unlabelled_caption_model_out[
'loss'].mean()
unlabelled_caption_loss.backward()
# print(unlabelled_caption_loss)
simple_sgd.update(unpaired_caption_fc_feats)
# a=1
unpaired_caption_fc_feats.requires_grad = False
unpaired_caption_att_feats.requires_grad = False
unlabelled_caption_model_out = dp_lw_models[who_to_study](
unpaired_caption_fc_feats, unpaired_caption_att_feats,
unpaired_caption_labels, unpaired_caption_masks,
unpaired_caption_att_masks, unpaired_caption['gts'],
torch.arange(0, len(unpaired_caption['gts'])), sc_flag,
struc_flag)
unlabelled_caption_loss = unlabelled_caption_model_out[
'loss'].mean()
loss += opt.number_of_models * opt.current_lambda_y * unlabelled_caption_loss
loss.backward()
if opt.grad_clip_value != 0:
getattr(torch.nn.utils, 'clip_grad_%s_' %
(opt.grad_clip_mode))(multi_models.parameters(),
opt.grad_clip_value)
optimizer.step()
for order in range(opt.number_of_models):
for param, param_ema in zip(
multi_models_list[order].parameters(),
multi_models_list[order +
opt.number_of_models].parameters()):
param_ema.data = opt.alpha * param_ema.data + (
1 - opt.alpha) * param.data
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
# if struc_flag:
# print("iter {} (epoch {}), train_loss = {:.3f}, lm_loss = {:.3f}, struc_loss = {:.3f}, time/batch = {:.3f}" \
# .format(iteration, epoch, train_loss, model_out['lm_loss'].mean().item(), model_out['struc_loss'].mean().item(), end - start))
# elif not sc_flag:
# print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
# .format(iteration, epoch, train_loss, end - start))
# else:
# print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
# .format(iteration, epoch, model_out['reward'].mean(), end - start))
if struc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, lm_loss = {:.3f}, struc_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss/opt.number_of_models, sum([model_outs_list[index]['lm_loss'].mean().item() for index in range(opt.number_of_models)])/opt.number_of_models,
sum([model_outs_list[index]['struc_loss'].mean().item() for index in range(opt.number_of_models)])/opt.number_of_models,
end - start))
elif not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, language_loss.item()/opt.number_of_models, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, sum([model_outs_list[index]['reward'].mean().item() for index in range(opt.number_of_models)])/opt.number_of_models, end - start))
# Update the iteration and epoch
iteration += 1
if epoch < opt.paired_train_epoch:
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
else:
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
# tb_summary_writer.add_scalar('train_loss', train_loss, iteration)
for index in range(opt.number_of_models):
model_id = 'model_{}'.format(index)
tb_summary_writer.add_scalars('language_loss', {
model_id:
model_outs_list[index]['loss'].mean().item()
}, iteration)
if epoch >= opt.paired_train_epoch:
# for index in range(opt.number_of_models):
# model_id = 'model_{}'.format(index)
# kd_model_outs_val = 0 if len(kd_model_outs_list) == 0 else kd_model_outs_list[index]['loss'].mean().item()
# tb_summary_writer.add_scalars('distilling_loss',
# {model_id: kd_model_outs_val},
# iteration)
tb_summary_writer.add_scalar('distilling_loss',
distilling_loss.item(),
iteration)
tb_summary_writer.add_scalar(
'unlabelled_caption_loss',
unlabelled_caption_loss.item(), iteration)
tb_summary_writer.add_scalar('hyper_parameter_lambda_x',
opt.current_lambda_x,
iteration)
tb_summary_writer.add_scalar('hyper_parameter_lambda_y',
opt.current_lambda_y,
iteration)
# tb_summary_writer.add_scalar('triplet_loss', triplet_loss_val.item(), iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
tb_summary_writer.add_scalar('learning_rate', opt.current_lr,
iteration)
tb_summary_writer.add_scalar('scheduled_sampling_prob',
multi_models[0].ss_prob,
iteration)
if sc_flag:
for index in range(opt.number_of_models):
# tb_summary_writer.add_scalar('avg_reward', model_out['reward'].mean(), iteration)
model_id = 'model_{}'.format(index)
tb_summary_writer.add_scalars(
'avg_reward', {
model_id:
model_outs_list[index]['reward'].mean().item()
}, iteration)
elif struc_flag:
# tb_summary_writer.add_scalar('lm_loss', model_out['lm_loss'].mean().item(), iteration)
# tb_summary_writer.add_scalar('struc_loss', model_out['struc_loss'].mean().item(), iteration)
# tb_summary_writer.add_scalar('reward', model_out['reward'].mean().item(), iteration)
# tb_summary_writer.add_scalar('reward_var', model_out['reward'].var(1).mean(), iteration)
model_id = 'model_{}'.format(index)
for index in range(opt.number_of_models):
tb_summary_writer.add_scalars(
'lm_loss', {
model_id:
model_outs_list[index]
['lm_loss'].mean().item()
}, iteration)
tb_summary_writer.add_scalars(
'struc_loss', {
model_id:
model_outs_list[index]
['struc_loss'].mean().item()
}, iteration)
tb_summary_writer.add_scalars(
'reward', {
model_id:
model_outs_list[index]['reward'].mean().item()
}, iteration)
tb_summary_writer.add_scalars(
'reward_var', {
model_id:
model_outs_list[index]['reward'].var(1).mean()
}, iteration)
histories['loss_history'][
iteration] = train_loss if not sc_flag else sum([
model_outs_list[index]['reward'].mean().item()
for index in range(opt.number_of_models)
]) / opt.number_of_models
histories['lr_history'][iteration] = opt.current_lr
histories['ss_prob_history'][iteration] = multi_models[
0].ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['loader_state_dict'] = loader.state_dict()
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0 and not opt.save_every_epoch and epoch >= opt.paired_train_epoch) or \
(epoch_done and opt.save_every_epoch and epoch >= opt.paired_train_epoch):
# load ensemble
# Setup the model
model = AttEnsemble(multi_models_list[opt.number_of_models:2 *
opt.number_of_models],
weights=None)
model.seq_length = opt.max_length
model.cuda()
model.eval()
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
# eval_kwargs['beam_size'] = 5
# eval_kwargs['verbose_beam'] = 1
# eval_kwargs['verbose_loss'] = 1
# val_loss, predictions, lang_stats = eval_utils.eval_split(
# dp_model, lw_model.crit, loader, eval_kwargs)
with torch.no_grad():
val_loss, predictions, lang_stats = eval_utils.eval_split(
model, lw_models[0].crit, loader, eval_kwargs)
model.train()
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
tb_summary_writer.add_scalar('validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
tb_summary_writer.add_scalar(k, v, iteration)
histories['val_result_history'][iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
utils.save_checkpoint(opt, multi_models, infos, optimizer,
histories)
if opt.save_history_ckpt:
utils.save_checkpoint(
opt,
multi_models,
infos,
optimizer,
append=str(epoch)
if opt.save_every_epoch else str(iteration))
if best_flag:
utils.save_checkpoint(opt,
multi_models,
infos,
optimizer,
append='best')
# if epoch_done and epoch == opt.paired_train_epoch:
# utils.save_checkpoint(opt, multi_models, infos, optimizer, histories)
# if opt.save_history_ckpt:
# utils.save_checkpoint(opt, multi_models, infos, optimizer,
# append=str(epoch) if opt.save_every_epoch else str(iteration))
# cmd = 'cp -r ' + 'log_' + opt.id + ' ' + 'log_' + opt.id + '_backup'
# os.system(cmd)
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
utils.save_checkpoint(opt, multi_models, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
################################
# Build dataloader
################################
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
##########################
# Initialize infos
##########################
infos = {
'iter': 0,
'epoch': 0,
'loader_state_dict': None,
'vocab': loader.get_vocab(),
}
# Load old infos(if there is) and check if models are compatible
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'infos_' + opt.id + '.pkl'),
'rb') as f:
infos = utils.pickle_load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert getattr(saved_model_opt, checkme) == getattr(
opt, checkme
), "Command line argument and saved model disagree on '%s' " % checkme
infos['opt'] = opt
#########################
# Build logger
#########################
# naive dict logger
histories = defaultdict(dict)
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl'),
'rb') as f:
histories.update(utils.pickle_load(f))
# tensorboard logger
tb_summary_writer = SummaryWriter(opt.checkpoint_path)
##########################
# Build model
##########################
opt.vocab = loader.get_vocab()
model = models.setup(opt).cuda()
del opt.vocab
# Load pretrained weights:
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, 'model.pth')):
model.load_state_dict(
torch.load(os.path.join(opt.start_from, 'model.pth')))
# Wrap generation model with loss function(used for training)
# This allows loss function computed separately on each machine
lw_model = LossWrapper(model, opt)
# Wrap with dataparallel
# dp_model = torch.nn.DataParallel(model)
# dp_lw_model = torch.nn.DataParallel(lw_model)
dp_model = model
dp_lw_model = lw_model
##########################
# Build optimizer
##########################
if opt.noamopt:
assert opt.caption_model == 'transformer', 'noamopt can only work with transformer'
optimizer = utils.get_std_opt(model,
factor=opt.noamopt_factor,
warmup=opt.noamopt_warmup)
elif opt.reduce_on_plateau:
optimizer = utils.build_optimizer(model.parameters(), opt)
optimizer = utils.ReduceLROnPlateau(optimizer, factor=0.5, patience=3)
else:
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if opt.start_from is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
#########################
# Get ready to start
#########################
iteration = infos['iter']
epoch = infos['epoch']
# For back compatibility
if 'iterators' in infos:
infos['loader_state_dict'] = {
split: {
'index_list': infos['split_ix'][split],
'iter_counter': infos['iterators'][split]
}
for split in ['train', 'val', 'test']
}
loader.load_state_dict(infos['loader_state_dict'])
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
if opt.noamopt:
optimizer._step = iteration
# flag indicating finish of an epoch
# Always set to True at the beginning to initialize the lr or etc.
epoch_done = True
# Assure in training mode
dp_lw_model.train()
# Start training
try:
while True:
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
if epoch_done:
if not opt.noamopt and not opt.reduce_on_plateau:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer,
opt.current_lr) # set the decayed rate
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(
opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
# If start structure loss training
if opt.structure_after != -1 and epoch >= opt.structure_after:
struc_flag = True
init_scorer(opt.cached_tokens)
else:
struc_flag = False
epoch_done = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch('train')
torch.cuda.synchronize()
start = time.time()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'],
data['masks'], data['att_masks'], data['topics']
]
tmp = [_ if _ is None else _.cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks, topic_vecs = tmp
# gts_end = data['gts_end']
# import ipdb; ipdb.set_trace()
train_loss = 0.0
#### Model forward pass
#### Liangming: Add for loop
sent_num = opt.seq_per_img
labels = labels.view(opt.batch_size, sent_num, -1)
masks = masks.view(opt.batch_size, sent_num, -1)
# topic_vecs = topic_vecs.view(opt.batch_size, sent_num, -1)
# initilize topic vec, the shape is: [batch_size 10, max_seq_len 31, hidden_size 512]
topic_vec = torch.zeros((opt.batch_size, labels.shape[2] - 1,
opt.rnn_size)).float().cuda()
total_loss = 0.0
for sent_n in range(sent_num):
# prepare sentence data
sent_label = labels[:, sent_n, :]
sent_mask = masks[:, sent_n, :]
# We should skip the batch in which the sentences for all examples in the batch are 0s.
# This is likely to happen at the end of the paragraph)
if torch.sum(sent_label).item() == 0:
continue
# model forward pass
optimizer.zero_grad()
model_out = dp_lw_model(fc_feats, att_feats, sent_label,
sent_mask, att_masks, topic_vec,
data['gts'],
torch.arange(0, len(data['gts'])),
sc_flag, struc_flag)
# loss calculation
loss = model_out['loss'].mean()
total_loss += loss
decoder_output = model_out['decoder_output']
# Cannot backward here, this will cause multiple backwards...
# Specify retain_graph=True, if you still want to backward here
#loss.backward()
#getattr(torch.nn.utils, 'clip_grad_%s_' %(opt.grad_clip_mode))(model.parameters(), opt.grad_clip_value)
#optimizer.step()
#train_loss = loss.item()
# PLM: treat decoder output as "topic vec"
# topic_vec = decoder_output
# Optional: Shrink the size of it based on the mask?
max_sent_len = -1
for row in range(sent_mask.shape[0]):
sent_len = int(sum(sent_mask[row, :]).data.item())
if sent_len > max_sent_len:
max_sent_len = sent_len
topic_vec = decoder_output[:, 0:max_sent_len, :]
avg_loss = total_loss / sent_num
avg_loss.backward()
#loss.backward()
getattr(torch.nn.utils, 'clip_grad_%s_' % (opt.grad_clip_mode))(
model.parameters(), opt.grad_clip_value)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
end = time.time()
if iteration % opt.print_freq == 1:
print('Read data:', time.time() - start)
if struc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, lm_loss = {:.3f}, struc_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, model_out['lm_loss'].mean().item(), model_out['struc_loss'].mean().item(), end - start))
elif not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, model_out['reward'].mean(), end - start))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
epoch_done = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
tb_summary_writer.add_scalar('train_loss', train_loss,
iteration)
if opt.noamopt:
opt.current_lr = optimizer.rate()
elif opt.reduce_on_plateau:
opt.current_lr = optimizer.current_lr
tb_summary_writer.add_scalar('learning_rate', opt.current_lr,
iteration)
tb_summary_writer.add_scalar('scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
tb_summary_writer.add_scalar('avg_reward',
model_out['reward'].mean(),
iteration)
elif struc_flag:
tb_summary_writer.add_scalar(
'lm_loss', model_out['lm_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'struc_loss', model_out['struc_loss'].mean().item(),
iteration)
tb_summary_writer.add_scalar(
'reward', model_out['reward'].mean().item(), iteration)
histories['loss_history'][
iteration] = train_loss if not sc_flag else model_out[
'reward'].mean()
histories['lr_history'][iteration] = opt.current_lr
histories['ss_prob_history'][iteration] = model.ss_prob
# update infos
infos['iter'] = iteration
infos['epoch'] = epoch
infos['loader_state_dict'] = loader.state_dict()
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every == 0 and not opt.save_every_epoch) or \
(epoch_done and opt.save_every_epoch):
# eval model
eval_kwargs = {'split': 'val', 'dataset': 'val'}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, lw_model.crit, loader, eval_kwargs)
if opt.reduce_on_plateau:
if 'CIDEr' in lang_stats:
optimizer.scheduler_step(-lang_stats['CIDEr'])
else:
optimizer.scheduler_step(val_loss)
# Write validation result into summary
tb_summary_writer.add_scalar('validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
tb_summary_writer.add_scalar(k, v, iteration)
histories['val_result_history'][iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Save model if is improving on validation result
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
# Dump miscalleous informations
infos['best_val_score'] = best_val_score
utils.save_checkpoint(opt, model, infos, optimizer, histories)
if opt.save_history_ckpt:
utils.save_checkpoint(
opt,
model,
infos,
optimizer,
append=str(epoch)
if opt.save_every_epoch else str(iteration))
if best_flag:
utils.save_checkpoint(opt,
model,
infos,
optimizer,
append='best')
except (RuntimeError, KeyboardInterrupt):
print('Save ckpt on exception ...')
utils.save_checkpoint(opt, model, infos, optimizer)
print('Save ckpt done.')
stack_trace = traceback.format_exc()
print(stack_trace)
def train(opt):
# Deal with feature things before anything
opt.use_att = utils.if_use_att(opt.caption_model)
ac = 0
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
infos = {}
histories = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(
os.path.join(
opt.checkpoint_path, 'infos_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = [
"caption_model", "rnn_type", "rnn_size", "num_layers"
]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')):
with open(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(opt.start_from), '04') + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
model = models.setup(opt).cuda()
#dp_model = torch.nn.DataParallel(model)
#dp_model = torch.nn.DataParallel(model, [0,2,3])
dp_model = model
update_lr_flag = True
# Assure in training mode
dp_model.train()
for name, param in model.named_parameters():
print(name)
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
CE_ac = utils.CE_ac()
optim_para = model.parameters()
optimizer = utils.build_optimizer(optim_para, opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(
opt.checkpoint_path, 'optimizer' + opt.id +
format(int(opt.start_from), '04') + '.pth')):
optimizer.load_state_dict(
torch.load(
os.path.join(
opt.checkpoint_path, 'optimizer' + opt.id +
format(int(opt.start_from), '04') + '.pth')))
optimizer.zero_grad()
accumulate_iter = 0
train_loss = 0
reward = np.zeros([1, 1])
sim_lambda = opt.sim_lambda
while True:
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
start = time.time()
# Load data from train split (0)
data = loader.get_batch(opt.train_split)
print('Read data:', time.time() - start)
torch.cuda.synchronize()
start = time.time()
tmp = [data['labels'], data['masks'], data['mods']]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
labels, masks, mods = tmp
tmp = [
data['att_feats'], data['att_masks'], data['attr_feats'],
data['attr_masks'], data['rela_feats'], data['rela_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
att_feats, att_masks, attr_feats, attr_masks, rela_feats, rela_masks = tmp
rs_data = {}
rs_data['att_feats'] = att_feats
rs_data['att_masks'] = att_masks
rs_data['attr_feats'] = attr_feats
rs_data['attr_masks'] = attr_masks
rs_data['rela_feats'] = rela_feats
rs_data['rela_masks'] = rela_masks
if not sc_flag:
logits, cw_logits = dp_model(rs_data, labels)
ac = CE_ac(logits, labels[:, 1:], masks[:, 1:])
print('ac :{0}'.format(ac))
loss_lan = crit(logits, labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs, cw_logits = dp_model(
rs_data, opt={'sample_max': 0}, mode='sample')
reward = get_self_critical_reward(dp_model, rs_data, data,
gen_result, opt)
loss_lan = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
loss_cw = crit(cw_logits, mods[:, 1:], masks[:, 1:])
ac2 = CE_ac(cw_logits, mods[:, 1:], masks[:, 1:])
print('ac :{0}'.format(ac2))
if epoch < opt.step2_train_after:
loss = loss_lan + sim_lambda * loss_cw
else:
loss = loss_lan
accumulate_iter = accumulate_iter + 1
loss = loss / opt.accumulate_number
loss.backward()
if accumulate_iter % opt.accumulate_number == 0:
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
optimizer.zero_grad()
iteration += 1
accumulate_iter = 0
train_loss = loss.item() * opt.accumulate_number
train_loss_lan = loss_lan.item()
train_loss_cw = loss_cw.item()
end = time.time()
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, end - start))
print("train_loss_lan = {:.3f}, train_loss_cw = {:.3f}" \
.format(train_loss_lan, train_loss_cw))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:, 0]), end - start))
print("train_loss_lan = {:.3f}, train_loss_cw = {:.3f}" \
.format(train_loss_lan, train_loss_cw))
print('lr:{0}'.format(opt.current_lr))
torch.cuda.synchronize()
# Update the iteration and epoch
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every
== 0) and (accumulate_iter % opt.accumulate_number == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'train_loss_lan',
train_loss_lan, iteration)
add_summary_value(tb_summary_writer, 'train_loss_cw',
train_loss_cw, iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
add_summary_value(tb_summary_writer, 'ac', ac, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# make evaluation on validation set, and save model
if (iteration % opt.save_checkpoint_every
== 0) and (accumulate_iter % opt.accumulate_number == 0):
# eval model
eval_kwargs = {'split': 'test', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
#val_loss, predictions, lang_stats = eval_utils_rs3.eval_split(dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
# add_summary_value(tb_summary_writer, 'validation loss', val_loss, iteration)
# if lang_stats is not None:
# for k,v in lang_stats.items():
# add_summary_value(tb_summary_writer, k, v, iteration)
# val_result_history[iteration] = {'loss': val_loss, 'lang_stats': lang_stats, 'predictions': predictions}
# Save model if is improving on validation result
# if opt.language_eval == 1:
# current_score = lang_stats['CIDEr']
# else:
# current_score = - val_loss
current_score = 0
best_flag = False
if True: # if true
save_id = iteration / opt.save_checkpoint_every
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(
opt.checkpoint_path,
'model' + opt.id + format(int(save_id), '04') + '.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(
opt.checkpoint_path,
'optimizer' + opt.id + format(int(save_id), '04') + '.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(
opt.checkpoint_path, 'infos_' + opt.id +
format(int(save_id), '04') + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(
opt.checkpoint_path, 'histories_' + opt.id +
format(int(save_id), '04') + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '-best.pkl'),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
iteration = 0
epoch = 0
# Load data
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
# Tensorboard summaries (they're great!)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
# Load pretrained model, info file, histories file
infos = {}
histories = {}
# Create model
model = convcap(opt).cuda()
pretrained_dict = torch.load(opt.model)
model.load_state_dict(pretrained_dict, strict=False)
start = time.time()
dp_model = torch.nn.DataParallel(model)
dp_model.train()
optimizer = utils.build_optimizer(model.parameters(), opt)
update_lr_flag = True
samplenet = sampleNet(dp_model, opt)
while True:
# Unpack data
#torch.cuda.synchronize()
data = loader.get_batch('train')
data_time = time.time() - start
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['dist'],
data['masks'], data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, dist_label, masks, att_masks = tmp
batchsize = fc_feats.size(0)
# Forward pass and loss
optimizer.zero_grad()
labels_decode = labels.view(-1, 180)
captions = utils.decode_sequence(loader.get_vocab(), labels_decode,
None)
captions_all = []
for index, caption in enumerate(captions):
caption = caption.replace('<start>',
'').replace(' ,', '').replace(' ', ' ')
captions_all.append(caption)
#print (captions_all[0])
#with torch.no_grad():
target, outcap, sample_right = samplenet(batchsize, 30 * 6,
loader.get_vocab(), att_feats)
#wordclass_feed = wordclass_feed.reshape((batchsize, 6, 30))
#out, _ = dp_model(fc_feats, att_feats, torch.tensor(wordclass_feed))
#Logprobs = torch.log(F.softmax(out.transpose(2,1)))
#target = target.view((batchsize, (30*6), -1))
#sampleLogprobs = Logprobs.gather(2, target.long().unsqueeze(2)) # gather t
#print (sampleLogprobs.size(), sample_right.size())
#print (sampleLogprobs.squeeze()[:, :], sample_right[:, :])
with torch.no_grad():
reward, cider_sample, cider_greedy = get_self_critical_reward(
batchsize, dp_model, att_feats, outcap, captions_all,
loader.get_vocab(), 30 * 6)
loss_rl = rl_crit(sample_right, target.data,
torch.from_numpy(reward).float())
wordact, x_all = dp_model(fc_feats, att_feats, labels, 30, 6)
mask = masks[:, 1:].contiguous()
wordact = wordact[:, :, :-1]
wordact_t = wordact.permute(0, 2, 1).contiguous()
wordact_t = wordact_t.view(wordact_t.size(0) * wordact_t.size(1), -1)
labels = labels.contiguous().view(-1, 6 * 30).cpu()
wordclass_v = labels[:, 1:]
wordclass_t = wordclass_v.contiguous().view(\
wordclass_v.size(0) * wordclass_v.size(1), 1)
maskids = torch.nonzero(mask.view(-1).cpu()).numpy().reshape(-1)
loss_xe = F.cross_entropy(wordact_t[maskids, ...], \
wordclass_t[maskids, ...].contiguous().view(maskids.shape[0]))
loss_xe_all = loss_rl #+ F.mse_loss(x_all_inference.cuda(), x_all.cuda()).cuda()
loss_xe_all.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss_xe_all.item()
torch.cuda.synchronize()
# Print
total_time = time.time() - start
reward = reward[:, 0].mean()
cider_sample = cider_sample.mean()
cider_greedy = cider_greedy.mean()
if 1:
if iteration % 2 == 1:
print('Read data:', time.time() - start)
if 0:
print("iter {} (epoch {}), train_loss = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, data_time, total_time))
if 1:
print("iter {} (epoch {}), train_loss = {:.3f}, avg_reward = {:.3f},cider_sample = {:.3f}, cider_greedy ={:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, reward, cider_sample, cider_greedy, data_time, total_time))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
'''
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss, iteration)
add_summary_value(tb_summary_writer, 'learning_rate', opt.current_lr, iteration)
#add_summary_value(tb_summary_writer, 'scheduled_sampling_prob', model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward', np.mean(reward[:,0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(reward[:,0])
lr_history[iteration] = opt.current_lr
#ss_prob_history[iteration] = model.ss_prob
'''
# Validate and save model
if (iteration % opt.save_checkpoint_every == 0):
checkpoint_path = os.path.join(
opt.checkpoint_path, 'model' + str(iteration) + '.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Evaluate model
'''
def train(opt):
# Load data
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
# Tensorboard summaries (they're great!)
tb_summary_writer = tb and tb.SummaryWriter(opt.checkpoint_path)
# Load pretrained model, info file, histories file
infos = {}
histories = {}
if opt.start_from is not None:
with open(os.path.join(opt.start_from,
'infos_' + opt.id + '.pkl')) as f:
infos = cPickle.load(f)
saved_model_opt = infos['opt']
need_be_same = ["rnn_type", "rnn_size", "num_layers"]
for checkme in need_be_same:
assert vars(saved_model_opt)[checkme] == vars(
opt
)[checkme], "Command line argument and saved model disagree on '%s' " % checkme
if os.path.isfile(
os.path.join(opt.start_from, 'histories_' + opt.id + '.pkl')):
with open(
os.path.join(opt.start_from,
'histories_' + opt.id + '.pkl')) as f:
histories = cPickle.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
val_result_history = histories.get('val_result_history', {})
loss_history = histories.get('loss_history', {})
lr_history = histories.get('lr_history', {})
ss_prob_history = histories.get('ss_prob_history', {})
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
# Create model
model = models.setup(opt).cuda()
dp_model = torch.nn.DataParallel(model, device_ids=[0])
dp_model.train()
# Loss function
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
# Optimizer and learning rate adjustment flag
optimizer = utils.build_optimizer(model.parameters(), opt)
update_lr_flag = True
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
# Training loop
while True:
# Update learning rate once per epoch
if update_lr_flag:
# Assign the learning rate
if epoch > opt.learning_rate_decay_start and opt.learning_rate_decay_start >= 0:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
else:
opt.current_lr = opt.learning_rate
utils.set_lr(optimizer, opt.current_lr)
# Assign the scheduled sampling prob
if epoch > opt.scheduled_sampling_start and opt.scheduled_sampling_start >= 0:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer(opt.cached_tokens)
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
start = time.time()
data = loader.get_batch('train')
data_time = time.time() - start
start = time.time()
# Unpack data
torch.cuda.synchronize()
tmp = [
data['fc_feats'], data['att_feats'], data['labels'], data['masks'],
data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).cuda() for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
# Forward pass and loss
optimizer.zero_grad()
if not sc_flag:
loss = crit(dp_model(fc_feats, att_feats, labels, att_masks),
labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, att_feats,
att_masks, data, gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().cuda())
# Backward pass
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.item()
torch.cuda.synchronize()
# Print
total_time = time.time() - start
if iteration % opt.print_freq == 1:
print('Read data:', time.time() - start)
if not sc_flag:
print("iter {} (epoch {}), train_loss = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, train_loss, data_time, total_time))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, data_time = {:.3f}, time/batch = {:.3f}" \
.format(iteration, epoch, np.mean(reward[:,0]), data_time, total_time))
# Update the iteration and epoch
iteration += 1
if data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Write the training loss summary
if (iteration % opt.losses_log_every == 0):
add_summary_value(tb_summary_writer, 'train_loss', train_loss,
iteration)
add_summary_value(tb_summary_writer, 'learning_rate',
opt.current_lr, iteration)
add_summary_value(tb_summary_writer, 'scheduled_sampling_prob',
model.ss_prob, iteration)
if sc_flag:
add_summary_value(tb_summary_writer, 'avg_reward',
np.mean(reward[:, 0]), iteration)
loss_history[iteration] = train_loss if not sc_flag else np.mean(
reward[:, 0])
lr_history[iteration] = opt.current_lr
ss_prob_history[iteration] = model.ss_prob
# Validate and save model
if (iteration % opt.save_checkpoint_every == 0):
# Evaluate model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
dp_model, crit, loader, eval_kwargs)
# Write validation result into summary
add_summary_value(tb_summary_writer, 'validation loss', val_loss,
iteration)
if lang_stats is not None:
for k, v in lang_stats.items():
add_summary_value(tb_summary_writer, k, v, iteration)
val_result_history[iteration] = {
'loss': val_loss,
'lang_stats': lang_stats,
'predictions': predictions
}
# Our metric is CIDEr if available, otherwise validation loss
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
# Save model in checkpoint path
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscalleous informations
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = opt
infos['vocab'] = loader.get_vocab()
histories['val_result_history'] = val_result_history
histories['loss_history'] = loss_history
histories['lr_history'] = lr_history
histories['ss_prob_history'] = ss_prob_history
with open(
os.path.join(opt.checkpoint_path,
'infos_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(infos, f)
with open(
os.path.join(opt.checkpoint_path,
'histories_' + opt.id + '.pkl'), 'wb') as f:
cPickle.dump(histories, f)
# Save model to unique file if new best model
if best_flag:
model_fname = 'model-best-i{:05d}-score{:.4f}.pth'.format(
iteration, best_val_score)
infos_fname = 'model-best-i{:05d}-infos.pkl'.format(iteration)
checkpoint_path = os.path.join(opt.checkpoint_path,
model_fname)
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, infos_fname),
'wb') as f:
cPickle.dump(infos, f)
# Stop if reaching max epochs
if epoch >= opt.max_epochs and opt.max_epochs != -1:
break
def train(opt):
logger = initialize_logger(os.path.join(opt.checkpoint_path, 'train.log'))
print = logger.info
if opt.use_box:
opt.att_feat_size = opt.att_feat_size + 5
loader = DataLoader(opt)
opt.vocab_size = loader.vocab_size
opt.seq_length = loader.seq_length
# Print out the option variables
print("*" * 20)
for k, v in opt.__dict__.items():
print("%r: %r" % (k, v))
print("*" * 20)
infos = {}
if opt.start_from is not None:
# open old infos and check if models are compatible
with open(os.path.join(opt.start_from, 'infos.json'), 'r') as f:
infos = json.load(f)
iteration = infos.get('iter', 0)
epoch = infos.get('epoch', 0)
loader.iterators = infos.get('iterators', loader.iterators)
loader.split_ix = infos.get('split_ix', loader.split_ix)
if opt.load_best_score == 1:
best_val_score = infos.get('best_val_score', None)
else:
best_val_score = None
model = models.setup(opt).to(device)
dp_model = torch.nn.DataParallel(model)
update_lr_flag = True
# Assure in training mode
dp_model.train()
crit = utils.LanguageModelCriterion()
rl_crit = utils.RewardCriterion()
optimizer = utils.build_optimizer(model.parameters(), opt)
# Load the optimizer
if vars(opt).get('start_from', None) is not None and os.path.isfile(
os.path.join(opt.start_from, "optimizer.pth")):
optimizer.load_state_dict(
torch.load(os.path.join(opt.start_from, 'optimizer.pth')))
start_time = time.time()
while True:
if update_lr_flag:
# Assign the learning rate
if 0 <= opt.learning_rate_decay_start < epoch:
frac = (epoch - opt.learning_rate_decay_start
) // opt.learning_rate_decay_every
decay_factor = opt.learning_rate_decay_rate**frac
opt.current_lr = opt.learning_rate * decay_factor
utils.set_lr(optimizer, opt.current_lr) # set the decayed rate
else:
opt.current_lr = opt.learning_rate
# Assign the scheduled sampling prob
if 0 <= opt.scheduled_sampling_start < epoch:
frac = (epoch - opt.scheduled_sampling_start
) // opt.scheduled_sampling_increase_every
opt.ss_prob = min(opt.scheduled_sampling_increase_prob * frac,
opt.scheduled_sampling_max_prob)
model.ss_prob = opt.ss_prob
# If start self critical training
if opt.self_critical_after != -1 and epoch >= opt.self_critical_after:
sc_flag = True
init_scorer()
else:
sc_flag = False
update_lr_flag = False
# Load data from train split (0)
batch_data = loader.get_batch('train')
torch.cuda.synchronize(device)
tmp = [
batch_data['fc_feats'], batch_data['att_feats'],
batch_data['labels'], batch_data['masks'], batch_data['att_masks']
]
tmp = [_ if _ is None else torch.from_numpy(_).to(device) for _ in tmp]
fc_feats, att_feats, labels, masks, att_masks = tmp
optimizer.zero_grad()
if not sc_flag:
outputs = dp_model(fc_feats, att_feats, labels, att_masks)
loss = crit(outputs, labels[:, 1:], masks[:, 1:])
else:
gen_result, sample_logprobs = dp_model(fc_feats,
att_feats,
att_masks,
opt={'sample_max': 0},
mode='sample')
reward = get_self_critical_reward(dp_model, fc_feats, att_feats,
att_masks, batch_data,
gen_result, opt)
loss = rl_crit(sample_logprobs, gen_result.data,
torch.from_numpy(reward).float().to(device))
loss.backward()
utils.clip_gradient(optimizer, opt.grad_clip)
optimizer.step()
train_loss = loss.data
torch.cuda.synchronize(device)
# Update the iteration and epoch
iteration += 1
if batch_data['bounds']['wrapped']:
epoch += 1
update_lr_flag = True
# Print train loss or avg reward
if iteration % opt.losses_print_every == 0:
if not sc_flag:
print(
"iter {} (epoch {}), loss = {:.3f}, time = {:.3f}".format(
iteration, epoch, loss.item(),
time.time() - start_time))
else:
print("iter {} (epoch {}), avg_reward = {:.3f}, time = {:.3f}".
format(iteration, epoch, np.mean(reward[:, 0]),
time.time() - start_time))
start_time = time.time()
# make evaluation on validation set, and save model
if (opt.save_checkpoint_every > 0 and iteration % opt.save_checkpoint_every == 0)\
or (opt.save_checkpoint_every <= 0 and update_lr_flag):
# eval model
eval_kwargs = {'split': 'val', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.simple_eval_split(
dp_model, loader, eval_kwargs)
# Save model if is improving on validation result
if not os.path.exists(opt.checkpoint_path):
os.makedirs(opt.checkpoint_path)
if opt.language_eval == 1:
current_score = lang_stats['CIDEr']
else:
current_score = -val_loss
best_flag = False
if best_val_score is None or current_score > best_val_score:
best_val_score = current_score
best_flag = True
checkpoint_path = os.path.join(opt.checkpoint_path, 'model.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Dump miscellaneous information
infos['iter'] = iteration
infos['epoch'] = epoch
infos['iterators'] = loader.iterators
infos['split_ix'] = loader.split_ix
infos['best_val_score'] = best_val_score
infos['opt'] = vars(opt)
infos['vocab'] = loader.get_vocab()
with open(os.path.join(opt.checkpoint_path, 'infos.json'),
'w') as f:
json.dump(infos, f, sort_keys=True, indent=4)
if best_flag:
checkpoint_path = os.path.join(opt.checkpoint_path,
'model-best.pth')
torch.save(model.state_dict(), checkpoint_path)
print("model saved to {}".format(checkpoint_path))
with open(os.path.join(opt.checkpoint_path, 'infos-best.json'),
'w') as f:
json.dump(infos, f, sort_keys=True, indent=4)
# Stop if reaching max epochs
if opt.max_epochs != -1 and epoch >= opt.max_epochs:
break
