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!)
# 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)
encoder = MemoryAugmentedEncoder(3, 0, attention_module=ScaledDotProductAttentionMemory,
attention_module_kwargs={'m': 40})
decoder = MeshedDecoder(8668, 180, 3, 0)
models = Transformer(8667, encoder, decoder)
# Create model
model = models.cuda()
lang_model = Seq2Seq().cuda()
# Create model
model.load_state_dict(torch.load('./log_cvpr_mesh/all2model20000.pth'))
lang_model.load_state_dict(torch.load('log_cvpr/all2model16000.pth'), strict=False)
optimizer = utils.build_optimizer_adam(list(models.parameters()) + list(lang_model.parameters()), opt)
update_lr_flag = True
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()
batchsize = fc_feats.size(0)
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)
# Forward pass and loss
d_steps = 1
g_steps = 1
#print (torch.sum(labels!=0), torch.sum(masks!=0))
if 1:
if 1:
model.train()
optimizer.zero_grad()
wordact, x_all_image = model(att_feats, labels.view(batchsize, -1))
wordact_t = wordact[:,:-1,:]
wordact_t = wordact_t.contiguous().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)
loss_xe = F.cross_entropy(wordact_t[ ...], \
wordclass_t[...].contiguous().view(-1))
'''
wordact = lang_model(labels.view(batchsize, -1).transpose(1, 0), labels.view(batchsize, -1).transpose(1, 0),
fc_feats)
wordact_t = wordact.transpose(1, 0)[:, 1:, :]
wordact_t = wordact_t.contiguous().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)
loss_xe_lang = F.cross_entropy(wordact_t[...], wordclass_t[...].view(-1))
'''
outcap, sampled_ids, sample_logprobs= lang_model.sample(labels.view(batchsize, -1).transpose(1,0),labels.view(batchsize, -1).transpose(1,0), fc_feats, loader.get_vocab())
sampled_ids[:, 0] = 8667
logprobs_input, _ = model(att_feats, sampled_ids.long().cuda())
log_probs = F.log_softmax(logprobs_input[:, :-1, :], -1)
sample_logprobs_true = log_probs.gather(2, sampled_ids[:, 1:].cuda().long().unsqueeze(2))
with torch.no_grad():
reward, cider_sample, cider_greedy = get_self_critical_reward(batchsize, lang_model, labels.view(batchsize, -1).transpose(1,0), fc_feats, outcap,
captions_all, loader,
180)
print (np.mean(cider_greedy))
loss_rl1 = rl_crit(torch.exp(sample_logprobs_true.squeeze()) / torch.exp(sample_logprobs[:, 1:]).cuda().detach(),sampled_ids[:, 1:].cpu(), torch.from_numpy(reward).float().cuda())
#loss_rl = rl_crit(sample_logprobs, sampled_ids.cpu(), torch.from_numpy(reward).float()).cuda()
#x_all_langauge = x_all_langauge.cuda().detach()
#l2_loss = ((x_all_image.transpose(2,1).cuda() - x_all_langauge) ** 2).mean().cuda()
train_loss = loss_xe + loss_rl1 # + loss_xe_lang
train_loss.backward()
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}, data_time = {:.3f}" \
.format(iteration, epoch, loss_xe, data_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, 'lang_model{:05d}.pth'.format(iteration))
torch.save(lang_model.state_dict(), checkpoint_path)
optimizer_path = os.path.join(opt.checkpoint_path, 'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
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)
models = Seq2Seq().cuda()
# Create model
optimizer = utils.build_optimizer_adam(models.parameters(), opt)
update_lr_flag = True
sc_flag = False
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_pro
# 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()
nd_labels = labels
batchsize = fc_feats.size(0)
# Forward pass and loss
d_steps = 1
g_steps = 1
#print (torch.sum(labels!=0), torch.sum(masks!=0))
if 1:
if 1:
models.train()
optimizer.zero_grad()
wordact = models(
labels.view(batchsize, -1).transpose(1, 0),
labels.view(batchsize, -1).transpose(1, 0), fc_feats)
wordact_t = wordact.transpose(1, 0)[:, 1:, :]
wordact_t = wordact_t.contiguous().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)
loss_xe = F.cross_entropy(wordact_t[...],
wordclass_t[...].view(-1))
train_loss = loss_xe
train_loss.backward()
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}, data_time = {:.3f}" \
.format(iteration, epoch, loss_xe, data_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,
'langmodel{:05d}.pth'.format(iteration))
torch.save(models.state_dict(), checkpoint_path)
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
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)
encoder = MemoryAugmentedEncoder(3, 0, attention_module=ScaledDotProductAttentionMemory,
attention_module_kwargs={'m': 40})
decoder = MeshedDecoder(8668, 180, 3, 0)
models = Transformer(8667, encoder, decoder)
# Create model
model = models.cuda()
lang_model = Seq2Seq().cuda()
model.load_state_dict(torch.load('log_meshed/all2model20000.pth'))
lang_model.load_state_dict(torch.load('language_model/langmodel06000.pth'))
optimizer = utils.build_optimizer_adam(list(models.parameters())+ list(lang_model.parameters()), opt)
update_lr_flag = True
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()
captions = utils.decode_sequence(loader.get_vocab(), labels.view(fc_feats.size(0), -1), None)
captions_all = []
for index, caption in enumerate(captions):
caption = caption.replace('<start>', '').replace(' ,', '').replace(' ', ' ')
captions_all.append(caption)
nd_labels = labels
batchsize = fc_feats.size(0)
# Forward pass and loss
d_steps = 1
g_steps = 1
beta = 0.2
#print (orch.sum(labels!=0), torch.sum(masks!=0))
if 1:
if 1:
model.train()
optimizer.zero_grad()
wordact, _ = model(att_feats, labels.view(batchsize, -1))
wordact_t = wordact[:,:-1,:]
wordact_t = wordact_t.contiguous().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)
loss_xe = F.cross_entropy(wordact_t[ ...], \
wordclass_t[...].contiguous().view(-1))
with torch.no_grad():
outcap, sampled_ids, sample_logprobs, x_all_langauge, outputs, log_probs_all = lang_model.sample(labels.view(batchsize, -1).transpose(1,0), att_feats.transpose(1,0), loader.get_vocab())
logprobs_input, _ = model(att_feats, sampled_ids.cuda().long())
log_probs = F.log_softmax(logprobs_input[:,:,:], 2)
sample_logprobs_true = log_probs.gather(2, sampled_ids[:,:].cuda().long().unsqueeze(2))
with torch.no_grad():
reward, cider_sample, cider_greedy, caps_sample, caps = get_self_critical_reward(batchsize, lang_model, labels.view(batchsize, -1).transpose(1,0), att_feats.transpose(1,0), outcap, captions_all, loader, 180)
reward = torch.tensor(reward)
kl_div = F.kl_div(log_probs.squeeze().cuda().detach(), torch.exp(log_probs_all.transpose(1,0)).cuda().detach(), reduce= False)
ratio_no = sample_logprobs_true.squeeze().cpu().double()
ratio_de = sample_logprobs.cpu().double()
ratio_no_f = torch.exp(ratio_no)
ratio_de_f = torch.exp(ratio_de)
ratio = (ratio_no_f/((1-beta)*ratio_de_f+ beta*ratio_no_f))
ratio = torch.clamp(ratio, min = 0.96)
ratio_prod = ratio.prod(1)
reward = (torch.tensor(reward).cuda()) - 0.05 * kl_div.mean()
loss_rl1 = rl_crit(ratio_prod.cuda().unsqueeze(1).detach()*sample_logprobs_true.squeeze()[:,:-1], sampled_ids[:,1:].cpu(), reward.float().cuda().detach())
#writer.add_scalar('RL loss', loss_rl1 , iteration)
#writer.add_scalar('TRIS ratio', ratio.mean(), iteration)
#writer.add_scalar('XE_loss', loss_xe, iteration)
#writer.add_scalar('KL_div', kl_div.mean(), iteration)
lamb = 0.5
train_loss = lamb * loss_rl1 + (1 - lamb)* loss_xe
train_loss.backward()
optimizer.step()
if 1:
if iteration % opt.print_freq == 1:
print('Read data:', time.time() - start)
if not sc_flag:
print (ratio.mean())
print (reward.mean())
print (kl_div.mean())
print("iter {} (epoch {}), train_loss = {:.4f}, xe_loss = {:.3f}, train_time = {:.3f}" \
.format(iteration, epoch, train_loss.item(), loss_xe, data_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, 'lang_model{:05d}.pth'.format(iteration))
torch.save(lang_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 0:
eval_kwargs = {'split': 'test',
'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
crit = utils.LanguageModelCriterion()
val_loss, predictions, lang_stats = eval_utils.eval_split(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)
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)
encoder = MemoryAugmentedEncoder(
3,
0,
attention_module=ScaledDotProductAttentionMemory,
attention_module_kwargs={'m': 40})
decoder = MeshedDecoder(8668, 180, 3, 0)
models = Transformer(8667, encoder, decoder)
# Create model
model = models.cuda()
# pretrained_dict = torch.load('log_xe_final_before_review/all2model12000.pth')
# model.load_state_dict(pretrained_dict, strict=False)
# d_pretrained_dict = torch.load('log_xe_final_before_review/all2d_model12000.pth')
# back_model.load_state_dict(d_pretrained_dict, strict=False)
optimizer = utils.build_optimizer_adam(models.parameters(), opt)
#back_optimizer = utils.build_optimizer(back_model.parameters(), opt)
update_lr_flag = True
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()
nd_labels = labels
batchsize = fc_feats.size(0)
# Forward pass and loss
d_steps = 1
g_steps = 1
#print (torch.sum(labels!=0), torch.sum(masks!=0))
if 1:
if 1:
model.train()
optimizer.zero_grad()
wordact = model(att_feats, labels.view(batchsize, -1))
##mask = masks.view(batchsize,-1)
#mask = mask[:,1:].contiguous()
wordact_t = wordact[:, :-1, :]
# wordact_t = wordact.permute(0, 2, 1).contiguous()
wordact_t = wordact_t.contiguous().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[ ...], \
wordclass_t[...].contiguous().view(-1))
train_loss = loss_xe
train_loss.backward()
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}, data_time = {:.3f}" \
.format(iteration, epoch, loss_xe, data_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)
optimizer_path = os.path.join(opt.checkpoint_path,
'optimizer.pth')
torch.save(optimizer.state_dict(), optimizer_path)
# Evaluate model
if (iteration % 20000 == 0):
eval_kwargs = {'split': 'test', 'dataset': opt.input_json}
eval_kwargs.update(vars(opt))
val_loss, predictions, lang_stats = eval_utils.eval_split(
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)