def run(args, local_rank):
""" Distributed Synchronous """
torch.manual_seed(1234)
vocab = Vocab(args.vocab, min_occur_cnt=args.min_occur_cnt, specials=[])
if (args.world_size == 1 or dist.get_rank() == 0):
print ("vocab.size = %d"%vocab.size, flush=True)
model = BIGLM(local_rank, vocab, args.embed_dim, args.ff_embed_dim,\
args.num_heads, args.dropout, args.layers, args.smoothing, args.approx)
if args.start_from is not None:
ckpt = torch.load(args.start_from, map_location='cpu')
model.load_state_dict(ckpt['model'])
model = model.cuda(local_rank)
if args.world_size > 1:
torch.manual_seed(1234 + dist.get_rank())
random.seed(5678 + dist.get_rank())
optimizer = Optim(model.embed_dim, args.lr, args.warmup_steps, torch.optim.Adam(model.parameters(), lr=0, betas=(0.9, 0.998), eps=1e-9))
if args.start_from is not None:
optimizer.load_state_dict(ckpt['optimizer'])
#train_data = DataLoader(vocab, args.train_data+"0"+str(local_rank), args.batch_size, args.max_len, args.min_len)
train_data = DataLoader(vocab, args.train_data, args.batch_size, args.max_len, args.min_len)
batch_acm = 0
acc_acm, nll_acm, ppl_acm, ntokens_acm, nxs, npairs_acm, loss_acm = 0., 0., 0., 0., 0., 0., 0.
while True:
model.train()
for truth, inp, msk in train_data:
batch_acm += 1
truth = truth.cuda(local_rank)
inp = inp.cuda(local_rank)
msk = msk.cuda(local_rank)
model.zero_grad()
res, loss, acc, nll, ppl, ntokens, npairs = model(truth, inp, msk)
loss_acm += loss.item()
acc_acm += acc
nll_acm += nll
ppl_acm += ppl
ntokens_acm += ntokens
npairs_acm += npairs
nxs += npairs
loss.backward()
if args.world_size > 1:
average_gradients(model)
torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0)
optimizer.step()
if (args.world_size==1 or dist.get_rank() ==0) and batch_acm%args.print_every == -1%args.print_every:
print ('batch_acm %d, loss %.3f, acc %.3f, nll %.3f, ppl %.3f, x_acm %d, lr %.6f'\
%(batch_acm, loss_acm/args.print_every, acc_acm/ntokens_acm, \
nll_acm/nxs, ppl_acm/nxs, npairs_acm, optimizer._rate), flush=True)
acc_acm, nll_acm, ppl_acm, ntokens_acm, loss_acm, nxs = 0., 0., 0., 0., 0., 0.
if (args.world_size==1 or dist.get_rank() ==0) and batch_acm%args.save_every == -1%args.save_every:
if not os.path.exists(args.save_dir):
os.mkdir(args.save_dir)
torch.save({'args':args, 'model':model.state_dict(), 'optimizer':optimizer.state_dict()}, '%s/epoch%d_batch_%d'%(args.save_dir, train_data.epoch_id, batch_acm))
train=stage == "train",
download=True,
transform=transforms.ToTensor())
loader[stage] = torch.utils.data.DataLoader(mnist,
batch_size=batch_size,
shuffle=stage == "train",
**more)
with scope("Models Construction"):
G = Generator()
D = Discriminator()
with scope("Optimizer Builder"):
hyper = dict(lr=lambda i: 0.1 / (1.00004)**i,
momentum=lambda i: 0.5 + min(0.2, i / 1e6))
Gopt_generator = Optim(torch.optim.SGD, G.parameters(), **hyper)
Dopt_generator = Optim(torch.optim.SGD, D.parameters(), **hyper)
with scope("Optimization Step"):
def run(iteration, model, entry, is_training=True):
if is_training: eval(model).train()
else: eval(model).eval()
x, y = entry
n_batch = x.size(0)
x_flat = x.flatten(1)
y_hot = torch.zeros(n_batch, 10)
y_hot[y] = 1
z = torch.rand(n_batch, 100)
def train():
text = Text(config.src_corpus, config.tar_corpus)
train_data = Data(config.train_path_src, config.train_path_tar)
dev_data = Data(config.dev_path_src, config.dev_path_tar)
train_loader = DataLoader(dataset=train_data,
batch_size=config.batch_size,
shuffle=True,
collate_fn=utils.get_batch)
dev_loader = DataLoader(dataset=dev_data,
batch_size=config.dev_batch_size,
shuffle=True,
collate_fn=utils.get_batch)
parser = OptionParser()
parser.add_option("--embed_size",
dest="embed_size",
default=config.embed_size)
parser.add_option("--hidden_size",
dest="hidden_size",
default=config.hidden_size)
parser.add_option("--window_size_d",
dest="window_size_d",
default=config.window_size_d)
parser.add_option("--encoder_layer",
dest="encoder_layer",
default=config.encoder_layer)
parser.add_option("--decoder_layers",
dest="decoder_layers",
default=config.decoder_layers)
parser.add_option("--dropout_rate",
dest="dropout_rate",
default=config.dropout_rate)
(options, args) = parser.parse_args()
device = torch.device("cuda:0" if config.cuda else "cpu")
#model_path = "/home/wangshuhe/shuhelearn/ShuHeLearning/NMT_attention/result/01.31_drop0.3_54_21.46508598886769_checkpoint.pth"
#print(f"load model from {model_path}", file=sys.stderr)
#model = NMT.load(model_path)
model = NMT(text, options, device)
#model = model.cuda()
#model_path = "/home/wangshuhe/shuhelearn/ShuHeLearning/NMT_attention/result/140_164.29781984744628_checkpoint.pth"
#print(f"load model from {model_path}", file=sys.stderr)
#model = NMT.load(model_path)
#model = torch.nn.DataParallel(model)
model = model.to(device)
model = model.cuda()
model.train()
optimizer = Optim(torch.optim.Adam(model.parameters()))
#optimizer = Optim(torch.optim.Adam(model.parameters(), betas=(0.9, 0.98), eps=1e-9), config.hidden_size, config.warm_up_step)
#print(optimizer.lr)
epoch = 0
valid_num = 1
hist_valid_ppl = []
print("begin training!")
while (True):
epoch += 1
max_iter = int(math.ceil(len(train_data) / config.batch_size))
with tqdm(total=max_iter, desc="train") as pbar:
for src_sents, tar_sents, tar_words_num_to_predict in train_loader:
optimizer.zero_grad()
batch_size = len(src_sents)
now_loss = -model(src_sents, tar_sents)
now_loss = now_loss.sum()
loss = now_loss / batch_size
loss.backward()
_ = torch.nn.utils.clip_grad_norm_(model.parameters(),
config.clip_grad)
#optimizer.updata_lr()
optimizer.step_and_updata_lr()
pbar.set_postfix({
"epwwoch":
epoch,
"avg_loss":
loss.item(),
"ppl":
math.exp(now_loss.item() / tar_words_num_to_predict),
"lr":
optimizer.lr
})
#pbar.set_postfix({"epoch": epoch, "avg_loss": loss.item(), "ppl": math.exp(now_loss.item()/tar_words_num_to_predict)})
pbar.update(1)
#print(optimizer.lr)
if (epoch % config.valid_iter == 0):
#if (epoch >= config.valid_iter//2):
if (valid_num % 5 == 0):
valid_num = 0
optimizer.updata_lr()
valid_num += 1
print("now begin validation ...", file=sys.stderr)
eav_ppl = evaluate_ppl(model, dev_data, dev_loader)
print("validation ppl %.2f" % (eav_ppl), file=sys.stderr)
flag = len(hist_valid_ppl) == 0 or eav_ppl < min(hist_valid_ppl)
if (flag):
print("current model is the best!, save to [%s]" %
(config.model_save_path),
file=sys.stderr)
hist_valid_ppl.append(eav_ppl)
model.save(
os.path.join(
config.model_save_path,
f"02.08_window35drop0.2_{epoch}_{eav_ppl}_checkpoint.pth"
))
torch.save(
optimizer.optimizer.state_dict(),
os.path.join(
config.model_save_path,
f"02.08_window35drop0.2_{epoch}_{eav_ppl}_optimizer.optim"
))
if (epoch == config.max_epoch):
print("reach the maximum number of epochs!", file=sys.stderr)
return
def main(hparams: HParams):
'''
setup training.
'''
if torch.cuda.is_available() and not hparams.gpus:
warnings.warn(
'WARNING: you have a CUDA device, so you should probably run with -gpus 0'
)
device = torch.device(hparams.gpus if torch.cuda.is_available() else 'cpu')
# data setup
print(f"Loading vocabulary...")
text_preprocessor = TextPreprocessor.load(hparams.preprocessor_path)
transform = transforms.Compose([
transforms.Resize([hparams.img_size, hparams.img_size]),
transforms.RandomCrop([hparams.crop_size, hparams.crop_size]),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
])
# create dataloader
print('Creating DataLoader...')
normal_data_loader = get_image_caption_loader(
hparams.img_dir,
hparams.normal_caption_path,
text_preprocessor,
hparams.normal_batch_size,
transform,
shuffle=True,
num_workers=hparams.num_workers,
)
style_data_loader = get_caption_loader(
hparams.style_caption_path,
text_preprocessor,
batch_size=hparams.style_batch_size,
shuffle=True,
num_workers=hparams.num_workers,
)
if hparams.train_from:
# loading checkpoint
print('Loading checkpoint...')
checkpoint = torch.load(hparams.train_from)
else:
normal_opt = Optim(
hparams.optimizer,
hparams.normal_lr,
hparams.max_grad_norm,
hparams.lr_decay,
hparams.start_decay_at,
)
style_opt = Optim(
hparams.optimizer,
hparams.style_lr,
hparams.max_grad_norm,
hparams.lr_decay,
hparams.start_decay_at,
)
print('Building model...')
encoder = EncoderCNN(hparams.hidden_dim)
decoder = FactoredLSTM(hparams.embed_dim,
text_preprocessor.vocab_size,
hparams.hidden_dim,
hparams.style_dim,
hparams.num_layers,
hparams.random_init,
hparams.dropout_ratio,
train=True,
device=device)
encoder = encoder.to(device)
decoder = decoder.to(device)
# loss and optimizer
criterion = nn.CrossEntropyLoss(ignore_index=text_preprocessor.PAD_ID)
normal_params = list(encoder.parameters()) + list(
decoder.default_parameters())
style_params = list(decoder.style_parameters())
normal_opt.set_parameters(normal_params)
style_opt.set_parameters(style_params)
if hparams.train_from:
encoder.load_state_dict(checkpoint['encoder'])
decoder.load_state_dict(checkpoint['decoder'])
normal_opt.load_state_dict(checkpoint['normal_opt'])
style_opt.load_state_dict(checkpoint['style_opt'])
# traininig loop
print('Start training...')
for epoch in range(hparams.num_epoch):
# result
sum_normal_loss, sum_style_loss, sum_normal_ppl, sum_style_ppl = 0, 0, 0, 0
# normal caption
for i, (images, in_captions, out_captions,
lengths) in enumerate(normal_data_loader):
images = images.to(device)
in_captions = in_captions.to(device)
out_captions = out_captions.contiguous().view(-1).to(device)
# Forward, backward and optimize
features = encoder(images)
outputs = decoder(in_captions, features, mode='default')
loss = criterion(outputs.view(-1, outputs.size(-1)), out_captions)
encoder.zero_grad()
decoder.zero_grad()
loss.backward()
normal_opt.step()
# print log
sum_normal_loss += loss.item()
sum_normal_ppl += np.exp(loss.item())
if i % hparams.normal_log_step == 0:
print(
f'Epoch [{epoch}/{hparams.num_epoch}], Normal Step: [{i}/{len(normal_data_loader)}] '
f'Normal Loss: {loss.item():.4f}, Perplexity: {np.exp(loss.item()):5.4f}'
)
# style caption
for i, (in_captions, out_captions,
lengths) in enumerate(style_data_loader):
in_captions = in_captions.to(device)
out_captions = out_captions.contiguous().view(-1).to(device)
# Forward, backward and optimize
outputs = decoder(in_captions, None, mode='style')
loss = criterion(outputs.view(-1, outputs.size(-1)), out_captions)
decoder.zero_grad()
loss.backward()
style_opt.step()
sum_style_loss += loss.item()
sum_style_ppl += np.exp(loss.item())
# print log
if i % hparams.style_log_step == 0:
print(
f'Epoch [{epoch}/{hparams.num_epoch}], Style Step: [{i}/{len(style_data_loader)}] '
f'Style Loss: {loss.item():.4f}, Perplexity: {np.exp(loss.item()):5.4f}'
)
model_params = {
'encoder': encoder.state_dict(),
'decoder': decoder.state_dict(),
'epoch': epoch,
'normal_opt': normal_opt.optimizer.state_dict(),
'style_opt': style_opt.optimizer.state_dict(),
}
avg_normal_loss = sum_normal_loss / len(normal_data_loader)
avg_style_loss = sum_style_loss / len(style_data_loader)
avg_normal_ppl = sum_normal_ppl / len(normal_data_loader)
avg_style_ppl = sum_style_ppl / len(style_data_loader)
print(f'Epoch [{epoch}/{hparams.num_epoch}] statistics')
print(
f'Normal Loss: {avg_normal_loss:.4f} Normal ppl: {avg_normal_ppl:5.4f} '
f'Style Loss: {avg_style_loss:.4f} Style ppl: {avg_style_ppl:5.4f}'
)
torch.save(
model_params,
f'{hparams.model_path}/n-loss_{avg_normal_loss:.4f}_s-loss_{avg_style_loss:.4f}_'
f'n-ppl_{avg_normal_ppl:5.4f}_s-ppl_{avg_style_ppl:5.4f}_epoch_{epoch}.pt'
)
if args.cuda:
netG.cuda()
netD.cuda()
netG_params_count = sum([p.nelement() for p in netG.parameters()])
netD_params_count = sum([p.nelement() for p in netD.parameters()])
print(netG)
print(netD)
print('netG has number of parameters: %d' % (netG_params_count))
print('netD has number of parameters: %d' % (netD_params_count))
one = torch.cuda.FloatTensor([1])
mone = one * -1
# ========= Setup loss function and optimizer =========#
optimizerG = Optim(netG.parameters(),
args.optim,
lr=args.lr,
grad_clip=args.grad_clip,
weight_decay=args.weight_decay,
momentum=args.momentum)
optimizerD = Optim(netD.parameters(),
args.optim,
lr=args.lr,
grad_clip=args.grad_clip,
weight_decay=args.weight_decay,
momentum=args.momentum)
# sigma for mixture of RBF kernel in MMD
#sigma_list = [1.0]
#sigma_list = mmd_util.median_heuristic(Data.Y_subspace, beta=1.)
sigma_list = mmd_util.median_heuristic(Data.Y_subspace, beta=.5)
sigma_var = torch.FloatTensor(sigma_list).cuda()
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
dataset_path = './data/txt'
data_path = './data'
train_data = RawDataLoader(dataset_path, 20)
print_every = 50
# 现成的BERT用来做句子划分
bert_model = BertTextNet()
# 组合的大模型
model = BigModel(device)
model = model.to(device)
# 模型优化器使用BERT默认的
optimizer = Optim(model_size=768, factor=1, warmup=10000,\
optimizer=torch.optim.Adam(model.parameters(), lr=0, betas=(0.9, 0.998), eps=1e-9))
batch_acm = 0
acc1_acm = 0.
acc2_acm = 0.
loss_acm = 0.
stoa_acc = 0.
while True:
model.train()
# 使用数据集，每次读取20条句子
for sentences in train_data:
batch_acm += 1
tokens, segments, input_masks = [], [], []
for sentence in sentences:
# ##############################################################################
# Build model
# ##############################################################################
import model
from const import PAD
from optim import Optim
encode = model.Encode(use_cuda)
actor = model.Actor(args.vocab_size, args.dec_hsz, args.rnn_layers,
args.batch_size, args.max_len, args.dropout, use_cuda)
critic = model.Critic(args.vocab_size, args.dec_hsz, args.rnn_layers,
args.batch_size, args.max_len, args.dropout, use_cuda)
optim_pre_A = Optim(actor.parameters(), args.pre_lr, True)
optim_pre_C = Optim(critic.parameters(), args.pre_lr, True)
optim_A = Optim(actor.parameters(), args.lr, False, args.new_lr)
optim_C = Optim(critic.parameters(), args.lr, False, args.new_lr)
criterion_A = torch.nn.CrossEntropyLoss(ignore_index=PAD)
criterion_C = torch.nn.MSELoss()
if use_cuda:
actor = actor.cuda()
critic = critic.cuda()
# ##############################################################################
# Training
# ##############################################################################
def train(index):
torch.manual_seed(1)
if (config.cuda):
torch.cuda.manual_seed(1)
device = torch.device(f"cuda:{index}" if config.cuda else "cpu")
dist_rank = index
torch.distributed.init_process_group(backend='nccl', init_method='tcp://localhost:23456', rank=dist_rank, world_size=1)
is_master_node = (dist_rank == 0)
args = dict()
args['embed_size'] = config.embed_size
args['d_model'] = config.d_model
args['nhead'] = config.nhead
args['num_encoder_layers'] = config.num_encoder_layers
args['num_decoder_layers'] = config.num_decoder_layers
args['dim_feedforward'] = config.dim_feedforward
args['dropout'] = config.dropout
args['smoothing_eps'] = config.smoothing_eps
text = Text(config.src_corpus, config.tar_corpus)
model = NMT(text, args, device)
model = make_data_parallel(model, device)
train_data = Data(config.train_path_src, config.train_path_tar)
dev_data = Data(config.dev_path_src, config.dev_path_tar)
train_sampler = DistributedSampler(train_data)
dev_sampler = DistributedSampler(dev_data)
train_loader = DataLoader(dataset=train_data, batch_size=int(config.train_batch_size/8), shuffle=False, num_workers=9, pin_memory=True, sampler=train_sampler, collate_fn=utils.get_batch)
dev_loader = DataLoader(dataset=dev_data, batch_size=int(config.dev_batch_size/8), shuffle=False, num_workers=9, pin_memory=True, sampler=dev_sampler, collate_fn=utils.get_batch)
model.train()
optimizer = Optim(torch.optim.Adam(model.parameters(), betas=(0.9, 0.98), eps=1e-9), config.d_model, config.warm_up_step)
epoch = 0
history_valid_ppl = []
print("begin training!", file=sys.stderr)
while (True):
epoch += 1
train_loader.sampler.set_epoch(epoch)
max_iter = int(math.ceil(len(train_data)/config.train_batch_size))
with tqdm(total=max_iter, desc="train") as pbar:
for batch_src, batch_tar, tar_word_num in train_loader:
optimizer.zero_grad()
now_batch_size = len(batch_src)
batch_loss = -model(batch_src, batch_tar, smoothing=True)
batch_loss = batch_loss.sum()
loss = batch_loss / now_batch_size
loss.backward()
torch.distributed.barrier()
optimizer.step_and_updata_lr()
if (is_master_node):
pbar.set_postfix({"epoch": epoch, "avg_loss": '{%.2f}' % (loss.item()), "ppl": '{%.2f}' % (batch_loss.item()/tar_word_num)})
pbar.update(1)
if (epoch % config.valid_iter == 0):
print("now begin validation...", file=sys.stderr)
torch.distributed.barrier()
eval_ppl = evaluate_ppl(model, dev_data, dev_loader, config.dev_batch_size, is_master_node)
print(eval_ppl)
flag = len(history_valid_ppl) == 0 or eval_ppl < min(history_valid_ppl)
if (flag):
print(f"current model is the best! save to [{config.model_save_path}]", file=sys.stderr)
history_valid_ppl.append(eval_ppl)
model.save(os.path.join(config.model_save_path, f"02.19_{epoch}_{eval_ppl}_checkpoint.pth"))
torch.save(optimizer.optimizer.state_dict(), os.path.join(config.model_save_path, f"02.19_{epoch}_{eval_ppl}_optimizer.optim"))
if (epoch == config.max_epoch):
print("reach the maximum number of epochs!", file=sys.stderr)
return
def run(args, local_rank):
""" Distributed Synchronous """
torch.manual_seed(1234)
vocab = Vocab(args.vocab, min_occur_cnt=args.min_occur_cnt, specials=[])
if (args.world_size == 1 or dist.get_rank() == 0):
print(vocab.size, flush=True)
model = BIGLM(local_rank, vocab, args.embed_dim, args.ff_embed_dim,\
args.num_heads, args.dropout, args.layers, args.smoothing, args.approx)
if args.start_from is not None:
ckpt = torch.load(args.start_from, map_location='cpu')
model.load_state_dict(ckpt['model'])
model = model.cuda(local_rank)
weight_decay_params = []
no_weight_decay_params = []
for name, param in model.named_parameters():
if name.endswith('bias') or 'layer_norm' in name:
no_weight_decay_params.append(param)
else:
weight_decay_params.append(param)
grouped_params = [{
'params': weight_decay_params,
'weight_decay': args.weight_decay
}, {
'params': no_weight_decay_params,
'weight_decay': 0.
}]
if args.world_size > 1:
torch.manual_seed(1234 + dist.get_rank())
random.seed(5678 + dist.get_rank())
if args.fp16:
try:
from apex.optimizers import FP16_Optimizer
from apex.optimizers import FusedAdam
except ImportError:
raise ImportError(
"Please install apex from https://www.github.com/nvidia/apex to use fp16 training."
)
optimizer = FusedAdam(grouped_params,
lr=args.lr,
betas=(0.9, 0.999),
eps=1e-6,
bias_correction=False,
max_grad_norm=1.0)
optimizer = FP16_Optimizer(optimizer, dynamic_loss_scale=True)
else:
if args.weight_decay > 0:
optimizer = AdamWeightDecayOptimizer(grouped_params,
lr=args.lr,
betas=(0.9, 0.999),
eps=1e-6)
else:
optimizer = Optim(
model.embed_dim, args.lr, args.warmup_steps,
torch.optim.Adam(model.parameters(),
lr=0,
betas=(0.9, 0.998),
eps=1e-9))
if args.start_from is not None:
optimizer.load_state_dict(ckpt['optimizer'])
train_data = DataLoader(vocab, args.train_data, args.batch_size,
args.max_len, args.min_len)
batch_acm = 0
acc_acm, nll_acm, ppl_acm, ntokens_acm, nxs, npairs_acm, loss_acm = 0., 0., 0., 0., 0., 0., 0.
while True:
model.train()
if train_data.epoch_id > 30:
break
for xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg, ys_pos, msk in train_data:
batch_acm += 1
xs_tpl = xs_tpl.cuda(local_rank)
xs_seg = xs_seg.cuda(local_rank)
xs_pos = xs_pos.cuda(local_rank)
ys_truth = ys_truth.cuda(local_rank)
ys_inp = ys_inp.cuda(local_rank)
ys_tpl = ys_tpl.cuda(local_rank)
ys_seg = ys_seg.cuda(local_rank)
ys_pos = ys_pos.cuda(local_rank)
msk = msk.cuda(local_rank)
model.zero_grad()
res, loss, acc, nll, ppl, ntokens, npairs = model(
xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg,
ys_pos, msk)
loss_acm += loss.item()
acc_acm += acc
nll_acm += nll
ppl_acm += ppl
ntokens_acm += ntokens
npairs_acm += npairs
nxs += npairs
if args.fp16:
optimizer.backward(loss)
else:
loss.backward()
if args.world_size > 1:
is_normal = average_gradients(model)
else:
is_normal = True
if is_normal:
torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0)
optimizer.step()
else:
print("gradient: none, gpu: " + str(local_rank), flush=True)
continue
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.print_every == -1 % args.print_every:
print ('batch_acm %d, loss %.3f, acc %.3f, nll %.3f, ppl %.3f, x_acm %d, lr %.6f'\
%(batch_acm, loss_acm/args.print_every, acc_acm/ntokens_acm, \
nll_acm/nxs, ppl_acm/nxs, npairs_acm, optimizer._rate), flush=True)
acc_acm, nll_acm, ppl_acm, ntokens_acm, loss_acm, nxs = 0., 0., 0., 0., 0., 0.
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.save_every == -1 % args.save_every:
if not os.path.exists(args.save_dir):
os.mkdir(args.save_dir)
torch.save(
{
'args': args,
'model': model.state_dict(),
'optimizer': optimizer.state_dict()
}, '%s/epoch%d_batch_%d' %
(args.save_dir, train_data.epoch_id, batch_acm))
def main():
print("Loading data from '%s'" % opt.data)
dataset = torch.load(opt.data)
dict_checkpoint = opt.train_from if opt.train_from else opt.train_from_state_dict
if dict_checkpoint:
print('Loading dicts from checkpoint at %s' % dict_checkpoint)
checkpoint = torch.load(dict_checkpoint)
dataset['dicts'] = checkpoint['dicts']
trainData = Dataset(dataset['train']['src'], dataset['train']['tgt'],
opt.batch_size, opt.gpus)
validData = Dataset(dataset['valid']['src'],
dataset['valid']['tgt'],
opt.batch_size,
opt.gpus,
volatile=True)
dicts = dataset['dicts']
print(' * vocabulary size. source = %d; target = %d' %
(len(dicts["word2index"]['src']), len(dicts["word2index"]['tgt'])))
print(' * number of training sentences. %d' % len(dataset['train']['src']))
print(' * maximum batch size. %d' % opt.batch_size)
print('Building model...')
encoder = Encoder(opt, len(dicts["word2index"]['src']))
decoder = Decoder(opt, len(dicts["word2index"]['tgt']))
generator = nn.Sequential(
nn.Linear(opt.hidden_size * 2, len(dicts["word2index"]['tgt'])),
nn.LogSoftmax())
model = NMTModel(encoder, decoder)
if opt.train_from:
print('Loading model from checkpoint at %s' % opt.train_from)
chk_model = checkpoint['model']
generator_state_dict = chk_model.generator.state_dict()
model_state_dict = {
k: v
for k, v in chk_model.state_dict().items() if 'generator' not in k
}
model.load_state_dict(model_state_dict)
generator.load_state_dict(generator_state_dict)
opt.start_epoch = checkpoint['epoch'] + 1
if opt.train_from_state_dict:
print('Loading model from checkpoint at %s' %
opt.train_from_state_dict)
model.load_state_dict(checkpoint['model'])
generator.load_state_dict(checkpoint['generator'])
opt.start_epoch = checkpoint['epoch'] + 1
if len(opt.gpus) >= 1:
model.cuda()
generator.cuda()
else:
model.cpu()
generator.cpu()
if len(opt.gpus) > 1:
model = nn.DataParallel(model, device_ids=opt.gpus, dim=1)
generator = nn.DataParallel(generator, device_ids=opt.gpus, dim=0)
model.generator = generator
if not opt.train_from_state_dict and not opt.train_from:
for p in model.parameters():
p.data.uniform_(-opt.param_init, opt.param_init)
encoder.load_pretrained_vectors(opt)
decoder.load_pretrained_vectors(opt)
optim = Optim(opt.optim,
opt.learning_rate,
opt.max_grad_norm,
lr_decay=opt.learning_rate_decay,
start_decay_at=opt.start_decay_at)
else:
print('Loading optimizer from checkpoint:')
optim = checkpoint['optim']
print(optim)
optim.set_parameters(model.parameters())
if opt.train_from or opt.train_from_state_dict:
optim.optimizer.load_state_dict(
checkpoint['optim'].optimizer.state_dict())
nParams = sum([p.nelement() for p in model.parameters()])
print('* number of parameters: %d' % nParams)
criterion = NMTCriterion(len(dicts["word2index"]['tgt']))
trainModel(model, trainData, validData, dataset, optim, criterion)
evaluation=True)
# ##############################################################################
# Build model
# ##############################################################################
import model
from const import PAD
from optim import Optim
actor = model.Actor(args.vocab_size, args.dec_hsz, args.rnn_layers,
args.batch_size, args.max_len, args.dropout, use_cuda)
critic = model.Critic(args.vocab_size, args.dec_hsz, args.rnn_layers,
args.batch_size, args.max_len, args.dropout, use_cuda)
optim_pre_A = Optim(actor.get_trainable_parameters(), args.pre_lr, True,
args.grad_clip)
optim_pre_C = Optim(critic.parameters(), args.pre_lr, True, args.grad_clip)
optim_A = Optim(actor.get_trainable_parameters(), args.lr, False, args.new_lr,
args.grad_clip)
optim_C = Optim(critic.parameters(), args.lr, False, args.new_lr,
args.grad_clip)
criterion_A = torch.nn.CrossEntropyLoss(ignore_index=PAD)
criterion_C = torch.nn.MSELoss()
criterion_AC = model.RewardCriterion()
if use_cuda:
actor = actor.cuda()
critic = critic.cuda()
def run(args, local_rank):
""" Distributed Synchronous """
torch.manual_seed(1234)
vocab = Vocab(args.vocab, min_occur_cnt=args.min_occur_cnt, specials=[])
if (args.world_size == 1 or dist.get_rank() == 0):
print("vocab.size = " + str(vocab.size), flush=True)
model = BIGLM(local_rank, vocab, args.embed_dim, args.ff_embed_dim,\
args.num_heads, args.dropout, args.layers, args.smoothing)
if args.start_from is not None:
ckpt = torch.load(args.start_from, map_location='cpu')
model.load_state_dict(ckpt['model'])
model = model.cuda(local_rank)
optimizer = Optim(
model.embed_dim, args.lr, args.warmup_steps,
torch.optim.Adam(model.parameters(),
lr=0,
betas=(0.9, 0.998),
eps=1e-9))
if args.start_from is not None:
optimizer.load_state_dict(ckpt['optimizer'])
train_data = DataLoader(vocab, args.train_data, args.batch_size,
args.max_len, args.min_len)
batch_acm = 0
acc_acm, nll_acm, ppl_acm, ntokens_acm, nxs, npairs_acm, loss_acm = 0., 0., 0., 0., 0., 0., 0.
while True:
model.train()
if train_data.epoch_id > 30:
break
for xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg, ys_pos, msk in train_data:
batch_acm += 1
xs_tpl = xs_tpl.cuda(local_rank)
xs_seg = xs_seg.cuda(local_rank)
xs_pos = xs_pos.cuda(local_rank)
ys_truth = ys_truth.cuda(local_rank)
ys_inp = ys_inp.cuda(local_rank)
ys_tpl = ys_tpl.cuda(local_rank)
ys_seg = ys_seg.cuda(local_rank)
ys_pos = ys_pos.cuda(local_rank)
msk = msk.cuda(local_rank)
model.zero_grad()
res, loss, acc, nll, ppl, ntokens, npairs = model(
xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg,
ys_pos, msk)
loss_acm += loss.item()
acc_acm += acc
nll_acm += nll
ppl_acm += ppl
ntokens_acm += ntokens
npairs_acm += npairs
nxs += npairs
loss.backward()
if args.world_size > 1:
is_normal = average_gradients(model)
else:
is_normal = True
if is_normal:
torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0)
optimizer.step()
else:
print("gradient: none, gpu: " + str(local_rank), flush=True)
continue
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.print_every == -1 % args.print_every:
print ('batch_acm %d, loss %.3f, acc %.3f, nll %.3f, ppl %.3f, x_acm %d, lr %.6f'\
%(batch_acm, loss_acm/args.print_every, acc_acm/ntokens_acm, \
nll_acm/nxs, ppl_acm/nxs, npairs_acm, optimizer._rate), flush=True)
acc_acm, nll_acm, ppl_acm, ntokens_acm, loss_acm, nxs = 0., 0., 0., 0., 0., 0.
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.save_every == -1 % args.save_every:
if not os.path.exists(args.save_dir):
os.mkdir(args.save_dir)
model.eval()
eval_epoch(
args, model, vocab, local_rank, "epoch-" +
str(train_data.epoch_id) + "-acm-" + str(batch_acm))
model.train()
torch.save(
{
'args': args,
'model': model.state_dict(),
'optimizer': optimizer.state_dict()
}, '%s/epoch%d_batch_%d' %
(args.save_dir, train_data.epoch_id, batch_acm))
def train():
torch.manual_seed(1)
if (config.cuda):
torch.cuda.manual_seed(1)
args = dict()
args['embed_size'] = config.embed_size
args['d_model'] = config.d_model
args['nhead'] = config.nhead
args['num_encoder_layers'] = config.num_encoder_layers
args['num_decoder_layers'] = config.num_decoder_layers
args['dim_feedforward'] = config.dim_feedforward
args['dropout'] = config.dropout
args['smoothing_eps'] = config.smoothing_eps
text = Text(config.src_corpus, config.tar_corpus)
train_data = Data(config.train_path_src, config.train_path_tar)
dev_data = Data(config.dev_path_src, config.dev_path_tar)
train_loader = DataLoader(dataset=train_data,
batch_size=config.train_batch_size,
shuffle=True,
collate_fn=utils.get_batch)
dev_loader = DataLoader(dataset=dev_data,
batch_size=config.dev_batch_size,
shuffle=True,
collate_fn=utils.get_batch)
#train_data_src, train_data_tar = utils.read_corpus(config.train_path)
#dev_data_src, dev_data_tar = utils.read_corpus(config.dev_path)
device = torch.device("cuda:0" if config.cuda else "cpu")
model = NMT(text, args, device)
#model = nn.DataParallel(model, device_ids=[0, 1])
model = model.to(device)
#model = model.module
#model_path = "/home/wangshuhe/shuhelearn/ShuHeLearning/NMT_transformer/result/02.01_1_344.6820465077113_checkpoint.pth"
#model = NMT.load(model_path)
#model = model.to(device)
model.train()
optimizer = Optim(
torch.optim.Adam(model.parameters(), betas=(0.9, 0.98), eps=1e-9),
config.d_model, config.warm_up_step)
#optimizer = Optim(torch.optim.Adam(model.parameters(), betas=(0.9, 0.98), eps=1e-9), config.warm_up_step, config.init_lr, config.lr)
#optimizer = Optim(torch.optim.Adam(model.parameters()))
epoch = 0
history_valid_ppl = []
print("begin training!", file=sys.stderr)
while (True):
epoch += 1
max_iter = int(math.ceil(len(train_data) / config.train_batch_size))
with tqdm(total=max_iter, desc="train") as pbar:
#for batch_src, batch_tar, tar_word_num in utils.batch_iter(train_data_src, train_data_tar, config.train_batch_size):
for batch_src, batch_tar, tar_word_num in train_loader:
optimizer.zero_grad()
now_batch_size = len(batch_src)
batch_loss = -model(batch_src, batch_tar, smoothing=True)
batch_loss = batch_loss.sum()
loss = batch_loss / now_batch_size
loss.backward()
#optimizer.step()
#optimizer.updata_lr()
optimizer.step_and_updata_lr()
pbar.set_postfix({
"epoch":
epoch,
"avg_loss":
'{%.2f}' % (loss.item()),
"ppl":
'{%.2f}' % (math.exp(batch_loss.item() / tar_word_num))
})
pbar.update(1)
if (epoch % config.valid_iter == 0):
print("now begin validation...", file=sys.stderr)
eval_ppl = evaluate_ppl(model, dev_data, dev_loader,
config.dev_batch_size)
print(eval_ppl)
flag = len(
history_valid_ppl) == 0 or eval_ppl < min(history_valid_ppl)
if (flag):
print(
f"current model is the best! save to [{config.model_save_path}]",
file=sys.stderr)
history_valid_ppl.append(eval_ppl)
model.save(
os.path.join(config.model_save_path,
f"02.10_{epoch}_{eval_ppl}_checkpoint.pth"))
torch.save(
optimizer.optimizer.state_dict(),
os.path.join(config.model_save_path,
f"02.10_{epoch}_{eval_ppl}_optimizer.optim"))
if (epoch == config.max_epoch):
print("reach the maximum number of epochs!", file=sys.stderr)
return
# ========= Setup loss function and optimizer =========#
if args.loss == 'L1':
criterion = nn.L1Loss(size_average=True)
elif args.loss == 'L2':
criterion = nn.MSELoss(size_average=True)
elif args.loss == 'Huber':
criterion = nn.SmoothL1Loss(size_average=True)
else:
raise NotImplementedError(
'Loss function %s is not support! Consider L1|L2|Huber' %
(args.loss_func))
if args.cuda:
cirterion = criterion.cuda()
optimizer = Optim(model.parameters(),
args.optim,
lr=args.lr,
grad_clip=args.grad_clip,
weight_decay=args.weight_decay,
momentum=args.momentum)
# sigma for mixture of RBF kernel in MMD
#sigma_list = [1.0]
#sigma_list = mmd_util.median_heuristic(Data.Y_subspace, beta=1.)
sigma_list = mmd_util.median_heuristic(Data.Y_subspace, beta=.5)
sigma_var = torch.FloatTensor(sigma_list).cuda()
print('sigma_list:', sigma_var)
# ========= Main loop for pretraining RNN with reconstruction loss =========#
Y_val = Data.val_set['Y'].numpy()
L_val = Data.val_set['L'].numpy()
Y_tst = Data.tst_set['Y'].numpy()
L_tst = Data.tst_set['L'].numpy()
def run(args, local_rank):
""" Distributed Synchronous """
torch.manual_seed(1234)
vocab = Vocab(args.vocab, min_occur_cnt=args.min_occur_cnt, specials=[])
if (args.world_size == 1 or dist.get_rank() == 0):
print("vocab.size = " + str(vocab.size), flush=True)
model = BIGLM(local_rank, vocab, args.embed_dim, args.ff_embed_dim,
args.num_heads, args.dropout, args.layers, args.smoothing)
if args.start_from is not None:
ckpt = torch.load(args.start_from, map_location='cpu')
model.load_state_dict(ckpt['model'])
model = model.cuda(local_rank)
optimizer = Optim(
model.embed_dim, args.lr, args.warmup_steps,
torch.optim.Adam(model.parameters(),
lr=0,
betas=(0.9, 0.998),
eps=1e-9))
if args.start_from is not None:
optimizer.load_state_dict(ckpt['optimizer'])
train_data = DataLoader(vocab, args.train_data, args.batch_size,
args.max_len, args.min_len)
batch_acm = 0
acc_acm, nll_acm, ppl_acm, ntokens_acm, nxs, npairs_acm, loss_acm = 0., 0., 0., 0., 0., 0., 0.
while True:
model.train()
if train_data.epoch_id > args.max_epoch:
break
for xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg, ys_pos, msk in train_data:
batch_acm += 1
xs_tpl = xs_tpl.cuda(local_rank)
xs_seg = xs_seg.cuda(local_rank)
xs_pos = xs_pos.cuda(local_rank)
ys_truth = ys_truth.cuda(local_rank)
ys_inp = ys_inp.cuda(local_rank)
ys_tpl = ys_tpl.cuda(local_rank)
ys_seg = ys_seg.cuda(local_rank)
ys_pos = ys_pos.cuda(local_rank)
msk = msk.cuda(local_rank)
model.zero_grad()
res, loss, acc, nll, ppl, ntokens, npairs = model(
xs_tpl, xs_seg, xs_pos, ys_truth, ys_inp, ys_tpl, ys_seg,
ys_pos, msk)
# http://www.myzaker.com/article/5f3747a28e9f096c723a65e0/ 资料
# 常用的文本生成评测指标 PPL、Distinct 外，
# 本文还专门设计了衡量格式（Format）准确率、韵律（Rhyme）准确率和句子完整性（integrity）的指标。
# 格式（Format）准确率: Precision p、Recall r 和 F1 得分-> Macro-F1 和 Micro-F1
# 完整性有个奇怪的log值
# 传统的BLEU和ROUGE, 再songnet中完全用不到, 创作要求多样性
loss_acm += loss.item() # 损失
acc_acm += acc # 精确度
nll_acm += nll #
ppl_acm += ppl # -log 和, 其实就是句子出现的概率, 越小, 困惑度越高
# 新指标, 困惑度perplexity, 比较两者再预测样本上的优劣, 困惑都越低越好??, 咋定义的
ntokens_acm += ntokens # 字符数
npairs_acm += npairs # 句子?
nxs += npairs
# 为什么啊, 感觉好难啊gpt2
loss.backward()
if args.world_size > 1:
is_normal = average_gradients(model)
else:
is_normal = True
if is_normal:
torch.nn.utils.clip_grad_norm_(model.parameters(), 1.0)
optimizer.step()
else:
print("gradient: none, gpu: " + str(local_rank), flush=True)
continue
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.print_every == -1 % args.print_every:
today = datetime.datetime.now()
print(today)
print(
'batch_acm %d, loss %.3f, acc %.3f, nll %.3f, ppl %.3f, x_acm %d, lr %.6f'
% (batch_acm, loss_acm / args.print_every,
acc_acm / ntokens_acm, nll_acm / nxs, ppl_acm / nxs,
npairs_acm, optimizer._rate),
flush=True)
acc_acm, nll_acm, ppl_acm, ntokens_acm, loss_acm, nxs = 0., 0., 0., 0., 0., 0.
if (args.world_size == 1 or dist.get_rank() == 0
) and batch_acm % args.save_every == -1 % args.save_every:
if not os.path.exists(args.save_dir):
os.mkdir(args.save_dir)
model.eval()
eval_epoch(
args, model, vocab, local_rank, "epoch-" +
str(train_data.epoch_id) + "-acm-" + str(batch_acm))
model.train()
torch.save(
{
'args': args,
'model': model.state_dict(),
'optimizer': optimizer.state_dict()
}, '%s/epoch%d_batch_%d' %
(args.save_dir, train_data.epoch_id, batch_acm))
def main():
args = make_parser().parse_args()
print("[Model hyperparams]: {}".format(str(args)))
cuda = torch.cuda.is_available() and args.cuda
device = torch.device("cpu") if not cuda else torch.device("cuda:" +
str(args.gpu))
seed_everything(seed=1337, cuda=cuda)
vectors = None #don't use pretrained vectors
# vectors = load_pretrained_vectors(args.emsize)
# Load dataset iterators
iters, TEXT, LABEL, PROMPTS = dataset_map[args.data](
args.batch_size,
device=device,
vectors=vectors,
base_path=args.base_path)
# Some datasets just have the train & test sets, so we just pretend test is valid
if len(iters) >= 4:
train_iter = iters[0]
val_iter = iters[1]
test_iter = iters[2]
outdomain_test_iter = list(iters[3:])
elif len(iters) == 3:
train_iter, val_iter, test_iter = iters
else:
train_iter, test_iter = iters
val_iter = test_iter
print("[Corpus]: train: {}, test: {}, vocab: {}, labels: {}".format(
len(train_iter.dataset), len(test_iter.dataset), len(TEXT.vocab),
len(LABEL.vocab)))
if args.model == "CNN":
args.embed_num = len(TEXT.vocab)
args.nlabels = len(LABEL.vocab)
args.nprompts = len(PROMPTS.vocab)
args.kernel_sizes = [int(k) for k in args.kernel_sizes.split(',')]
args.embed_dim = args.emsize
classifier_model = CNN_Text_GANLike(args)
topic_decoder = [
nn.Sequential(
nn.Linear(
len(args.kernel_sizes) * args.kernel_num, args.nprompts))
]
else:
ntokens, nlabels, nprompts = len(TEXT.vocab), len(LABEL.vocab), len(
PROMPTS.vocab)
args.nlabels = nlabels # hack to not clutter function arguments
args.nprompts = nprompts
embedding = nn.Embedding(ntokens, args.emsize, padding_idx=1)
encoder = Encoder(args.emsize,
args.hidden,
nlayers=args.nlayers,
dropout=args.drop,
bidirectional=args.bi,
rnn_type=args.rnn_model)
attention_dim = args.hidden if not args.bi else 2 * args.hidden
attention = BahdanauAttention(attention_dim, attention_dim)
if args.bottleneck_dim == 0:
classifier_model = Classifier_GANLike(embedding, encoder,
attention, attention_dim,
nlabels)
topic_decoder = [
nn.Sequential(nn.Dropout(args.topic_drop),
nn.Linear(attention_dim, args.nprompts))
]
else:
classifier_model = Classifier_GANLike_bottleneck(
embedding,
encoder,
attention,
attention_dim,
nlabels,
bottleneck_dim=args.bottleneck_dim)
topic_decoder = [
nn.Sequential(nn.Dropout(args.topic_drop),
nn.Linear(args.bottleneck_dim, args.nprompts))
]
classifier_model.to(device)
topic_decoder[0].to(device)
classify_criterion = nn.CrossEntropyLoss()
topic_criterion = nn.CrossEntropyLoss()
classify_optim = Optim(args.optim, args.lr, args.clip)
topic_optim = Optim(args.optim, args.lr, args.clip)
for p in classifier_model.parameters():
if not p.requires_grad:
print("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
for p in topic_decoder[0].parameters():
if not p.requires_grad:
print("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
classify_optim.set_parameters(classifier_model.parameters())
topic_optim.set_parameters(topic_decoder[0].parameters())
if args.load:
if args.latest:
best_model = torch.load(args.save_dir + "/" + args.model_name +
"_latestmodel")
else:
best_model = torch.load(args.save_dir + "/" + args.model_name +
"_bestmodel")
else:
try:
best_valid_loss = None
best_model = None
#pretraining the classifier
for epoch in range(1, args.pretrain_epochs + 1):
pretrain_classifier(classifier_model, train_iter,
classify_optim, classify_criterion, args,
epoch)
loss = evaluate(classifier_model, val_iter, classify_criterion,
args)
# oodLoss = evaluate(classifier_model, outdomain_test_iter[0], classify_criterion, args, datatype="oodtest")
if not best_valid_loss or loss < best_valid_loss:
best_valid_loss = loss
print("Updating best pretrained_model")
best_model = copy.deepcopy(classifier_model)
torch.save(
best_model, args.save_dir + "/" + args.model_name +
"_pretrained_bestmodel")
torch.save(
classifier_model, args.save_dir + "/" + args.model_name +
"_pretrained_latestmodel")
# classifier_model = best_model
#alternating training like GANs
for epoch in range(1, args.epochs + 1):
for t_step in range(1, args.t_steps + 1):
train_topic_predictor(classifier_model, topic_decoder[-1],
train_iter, topic_optim,
topic_criterion, args, epoch,
args.t_steps)
if args.reset_classifier:
for p in classifier_model.parameters():
if not p.requires_grad:
print("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
for c_step in range(1, args.c_steps + 1):
train_classifier(classifier_model, topic_decoder,
train_iter, classify_optim,
classify_criterion, topic_criterion, args,
epoch, args.c_steps)
loss = evaluate(classifier_model, val_iter,
classify_criterion, args)
# oodLoss = evaluate(classifier_model, outdomain_test_iter[0], classify_criterion, args, datatype="oodtest")
#creating a new instance of a decoder
if args.model == "CNN":
topic_decoder += [
nn.Sequential(
nn.Linear(
len(args.kernel_sizes) * args.kernel_num,
args.nprompts))
]
else:
attention_dim = args.hidden if not args.bi else 2 * args.hidden
if args.bottleneck_dim == 0:
topic_decoder.append(
nn.Sequential(
nn.Dropout(args.topic_drop),
nn.Linear(attention_dim, args.nprompts)))
else:
topic_decoder.append(
nn.Sequential(
nn.Dropout(args.topic_drop),
nn.Linear(args.bottleneck_dim, args.nprompts)))
#attaching a new optimizer to the new topic decode
topic_decoder[-1].to(device)
topic_optim = Optim(args.optim, args.lr, args.clip)
for p in topic_decoder[-1].parameters():
if not p.requires_grad:
print("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
topic_optim.set_parameters(topic_decoder[-1].parameters())
if not best_valid_loss or loss < best_valid_loss:
best_valid_loss = loss
print("Updating best model")
best_model = copy.deepcopy(classifier_model)
torch.save(
best_model,
args.save_dir + "/" + args.model_name + "_bestmodel")
torch.save(
classifier_model,
args.save_dir + "/" + args.model_name + "_latestmodel")
except KeyboardInterrupt:
print("[Ctrl+C] Training stopped!")
# if not args.load:
trainloss = evaluate(best_model,
train_iter,
classify_criterion,
args,
datatype='train',
writetopics=args.save_output_topics,
itos=TEXT.vocab.itos,
litos=LABEL.vocab.itos)
valloss = evaluate(best_model,
val_iter,
classify_criterion,
args,
datatype='valid',
writetopics=args.save_output_topics,
itos=TEXT.vocab.itos,
litos=LABEL.vocab.itos)
loss = evaluate(best_model,
test_iter,
classify_criterion,
args,
datatype='test',
writetopics=args.save_output_topics,
itos=TEXT.vocab.itos,
litos=LABEL.vocab.itos)
if args.data == "AMAZON":
oodnames = args.oodname.split(",")
for oodname, oodtest_iter in zip(oodnames, outdomain_test_iter):
oodLoss = evaluate(best_model,
oodtest_iter,
classify_criterion,
args,
datatype=oodname + "_bestmodel",
writetopics=args.save_output_topics)
oodLoss = evaluate(classifier_model,
oodtest_iter,
classify_criterion,
args,
datatype=oodname + "_latest",
writetopics=args.save_output_topics)
else:
oodLoss = evaluate(best_model,
outdomain_test_iter[0],
classify_criterion,
args,
datatype="oodtest_bestmodel",
writetopics=args.save_output_topics,
itos=TEXT.vocab.itos,
litos=LABEL.vocab.itos)
oodLoss = evaluate(classifier_model,
outdomain_test_iter[0],
classify_criterion,
args,
datatype="oodtest_latest",
writetopics=args.save_output_topics)
def main():
args = make_parser().parse_args()
print("[Model hyperparams]: {}".format(str(args)))
cuda = torch.cuda.is_available() and args.cuda
device = torch.device("cpu") if not cuda else torch.device("cuda:"+str(args.gpu))
seed_everything(seed=1337, cuda=cuda)
vectors = None #don't use pretrained vectors
# vectors = load_pretrained_vectors(args.emsize)
# Load dataset iterators
if args.data in ["RT_GENDER"]:
if args.finetune:
iters, TEXT, LABEL, INDEX = make_rt_gender(args.batch_size, base_path=args.base_path, train_file=args.train_file, valid_file=args.valid_file, test_file=args.test_file, device=device, vectors=vectors, topics=False)
else:
iters, TEXT, LABEL, TOPICS, INDEX = make_rt_gender(args.batch_size, base_path=args.base_path, train_file=args.train_file, valid_file=args.valid_file, test_file=args.test_file, device=device, vectors=vectors, topics=True)
train_iter, val_iter, test_iter = iters
else:
assert False
if not args.finetune:
for batch in train_iter:
args.num_topics = batch.topics.shape[1]
break
print("[Corpus]: train: {}, test: {}, vocab: {}, labels: {}".format(
len(train_iter.dataset), len(test_iter.dataset), len(TEXT.vocab), len(LABEL.vocab)))
if args.model == "CNN":
args.embed_num = len(TEXT.vocab)
args.nlabels = len(LABEL.vocab)
args.kernel_sizes = [int(k) for k in args.kernel_sizes.split(',')]
args.embed_dim = args.emsize
classifier_model = CNN_Text_GANLike(args)
topic_decoder = nn.Sequential(nn.Linear(len(args.kernel_sizes)*args.kernel_num, args.num_topics), nn.LogSoftmax(dim=-1))
else:
ntokens, nlabels = len(TEXT.vocab), len(LABEL.vocab)
args.nlabels = nlabels # hack to not clutter function arguments
embedding = nn.Embedding(ntokens, args.emsize, padding_idx=1)
encoder = Encoder(args.emsize, args.hidden, nlayers=args.nlayers,
dropout=args.drop, bidirectional=args.bi, rnn_type=args.rnn_model)
attention_dim = args.hidden if not args.bi else 2*args.hidden
attention = BahdanauAttention(attention_dim, attention_dim)
if args.bottleneck_dim == 0:
classifier_model = Classifier_GANLike(embedding, encoder, attention, attention_dim, nlabels)
topic_decoder = [nn.Sequential(nn.Dropout(args.topic_drop), nn.Linear(attention_dim, args.num_topics), nn.LogSoftmax())]
else:
classifier_model = Classifier_GANLike_bottleneck(embedding, encoder, attention, attention_dim, nlabels, bottleneck_dim=args.bottleneck_dim)
topic_decoder = [nn.Sequential(nn.Dropout(args.topic_drop), nn.Linear(args.bottleneck_dim, args.num_topics), nn.LogSoftmax())]
classifier_model.to(device)
topic_decoder[0].to(device)
classify_criterion = nn.CrossEntropyLoss()
topic_criterion = nn.KLDivLoss(size_average=False)
classify_optim = Optim(args.optim, args.lr, args.clip)
topic_optim = Optim(args.optim, args.lr, args.clip)
for p in classifier_model.parameters():
if not p.requires_grad:
print ("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
for p in topic_decoder[0].parameters():
if not p.requires_grad:
print ("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
classify_optim.set_parameters(classifier_model.parameters())
topic_optim.set_parameters(topic_decoder[0].parameters())
if args.load:
if args.latest:
best_model = torch.load(args.save_dir+"/"+args.model_name+"_latestmodel")
else:
best_model = torch.load(args.save_dir+"/"+args.model_name+"_bestmodel")
else:
try:
best_valid_loss = None
best_model = None
#pretraining the classifier
for epoch in range(1, args.pretrain_epochs+1):
pretrain_classifier(classifier_model, train_iter, classify_optim, classify_criterion, args, epoch)
loss = evaluate(classifier_model, topic_decoder, val_iter, classify_criterion, topic_criterion, args)
#oodLoss = evaluate(classifier_model, outdomain_test_iter[0], classify_criterion, args, datatype="oodtest")
if not best_valid_loss or loss < best_valid_loss:
best_valid_loss = loss
print ("Updating best pretrained_model")
best_model = copy.deepcopy(classifier_model)
torch.save(best_model, args.save_dir+"/"+args.model_name+"_pretrained_bestmodel")
torch.save(classifier_model, args.save_dir+"/"+args.model_name+"_pretrained_latestmodel")
print("Done pretraining")
print()
best_valid_loss = None
best_model = None
#alternating training like GANs
for epoch in range(1, args.epochs + 1):
for t_step in range(1, args.t_steps+1):
print()
print("Training topic predictor")
train_topic_predictor(classifier_model, topic_decoder[-1], train_iter, topic_optim, topic_criterion, args, epoch, args.t_steps)
if args.reset_classifier:
for p in classifier_model.parameters():
if not p.requires_grad:
print ("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
for c_step in range(1, args.c_steps+1):
print()
print("Training classifier")
train_classifier(classifier_model, topic_decoder, train_iter, classify_optim, classify_criterion, topic_criterion, args, epoch, args.c_steps)
loss = evaluate(classifier_model, topic_decoder, val_iter, classify_criterion, topic_criterion, args)
#oodLoss = evaluate(classifier_model, outdomain_test_iter[0], classify_criterion, args, datatype="oodtest")
#creating a new instance of a decoder
attention_dim = args.hidden if not args.bi else 2*args.hidden
if args.bottleneck_dim == 0:
topic_decoder.append(nn.Sequential(nn.Dropout(args.topic_drop), nn.Linear(attention_dim, args.num_topics), nn.LogSoftmax()))
else:
topic_decoder.append(nn.Sequential(nn.Dropout(args.topic_drop), nn.Linear(args.bottleneck_dim, args.num_topics), nn.LogSoftmax()))
#attaching a new optimizer to the new topic decode
topic_decoder[-1].to(device)
topic_optim = Optim(args.optim, args.lr, args.clip)
for p in topic_decoder[-1].parameters():
if not p.requires_grad:
print ("OMG", p)
p.requires_grad = True
p.data.uniform_(-args.param_init, args.param_init)
topic_optim.set_parameters(topic_decoder[-1].parameters())
if not best_valid_loss or loss < best_valid_loss:
best_valid_loss = loss
print ("Updating best model")
best_model = copy.deepcopy(classifier_model)
torch.save(best_model, args.save_dir+"/"+args.model_name+"_bestmodel")
torch.save(classifier_model, args.save_dir+"/"+args.model_name+"_latestmodel")
except KeyboardInterrupt:
print("[Ctrl+C] Training stopped!")
if args.finetune:
best_valid_loss = None
for c_step in range(1, args.c_steps+1):
print()
print("Fine-tuning classifier")
train_classifier(classifier_model, None, train_iter, classify_optim, classify_criterion, None, args, c_step, args.c_steps)
loss = evaluate(classifier_model, topic_decoder, val_iter, classify_criterion, topic_criterion, args)
if not best_valid_loss or loss < best_valid_loss:
best_valid_loss = loss
print ("Updating best model")
best_model = copy.deepcopy(classifier_model)
torch.save(best_model, args.save_dir+"/"+args.model_name+"finetune_bestmodel")
torch.save(classifier_model, args.save_dir+"/"+args.model_name+"finetune_latestmodel")
if not args.load:
trainloss = evaluate(best_model, topic_decoder, train_iter, classify_criterion, topic_criterion, args, datatype='train', itos=TEXT.vocab.itos, litos=LABEL.vocab.itos)
valloss = evaluate(best_model, topic_decoder, val_iter, classify_criterion, topic_criterion, args, datatype='valid', itos=TEXT.vocab.itos, litos=LABEL.vocab.itos)
loss = evaluate(best_model, topic_decoder, test_iter, classify_criterion, topic_criterion, args, datatype=os.path.basename(args.test_file).replace(".txt", "").replace(".tsv", ""), itos=TEXT.vocab.itos, litos=LABEL.vocab.itos)
if args.ood_test_file:
loss = evaluate(best_model, topic_decoder, test_iter, classify_criterion, topic_criterion, args, datatype=os.path.basename(args.ood_test_file).replace(".txt", "").replace(".tsv", ""), itos=TEXT.vocab.itos, litos=LABEL.vocab.itos)
