def main(args):
dataset_config = Config(args.dataset_config)
model_config = Config(args.model_config)
exp_dir = Path("experiments") / model_config.type
exp_dir = exp_dir.joinpath(
f"epochs_{args.epochs}_batch_size_{args.batch_size}_learning_rate_{args.learning_rate}"
)
if not exp_dir.exists():
exp_dir.mkdir(parents=True)
if args.fix_seed:
torch.manual_seed(777)
torch.backends.cudnn.deterministic = True
torch.backends.cudnn.benchmark = False
tokenizer = get_tokenizer(dataset_config, model_config)
tr_dl, val_dl = get_data_loaders(dataset_config, tokenizer,
args.batch_size)
model = VDCNN(num_classes=model_config.num_classes,
embedding_dim=model_config.embedding_dim,
k_max=model_config.k_max,
vocab=tokenizer.vocab)
loss_fn = nn.CrossEntropyLoss()
opt = optim.Adam(params=model.parameters(), lr=args.learning_rate)
scheduler = ReduceLROnPlateau(opt, patience=5)
device = torch.device(
'cuda') if torch.cuda.is_available() else torch.device('cpu')
model.to(device)
writer = SummaryWriter(f'{exp_dir}/runs')
checkpoint_manager = CheckpointManager(exp_dir)
summary_manager = SummaryManager(exp_dir)
best_val_loss = 1e+10
for epoch in tqdm(range(args.epochs), desc='epochs'):
tr_loss = 0
tr_acc = 0
model.train()
for step, mb in tqdm(enumerate(tr_dl), desc='steps', total=len(tr_dl)):
x_mb, y_mb = map(lambda elm: elm.to(device), mb)
opt.zero_grad()
y_hat_mb = model(x_mb)
mb_loss = loss_fn(y_hat_mb, y_mb)
mb_loss.backward()
opt.step()
with torch.no_grad():
mb_acc = acc(y_hat_mb, y_mb)
tr_loss += mb_loss.item()
tr_acc += mb_acc.item()
if (epoch * len(tr_dl) + step) % args.summary_step == 0:
val_loss = evaluate(model, val_dl, {'loss': loss_fn},
device)['loss']
writer.add_scalars('loss', {
'train': tr_loss / (step + 1),
'val': val_loss
},
epoch * len(tr_dl) + step)
model.train()
else:
tr_loss /= (step + 1)
tr_acc /= (step + 1)
tr_summary = {'loss': tr_loss, 'acc': tr_acc}
val_summary = evaluate(model, val_dl, {
'loss': loss_fn,
'acc': acc
}, device)
scheduler.step(val_summary['loss'])
tqdm.write(
f"epoch: {epoch+1}\n"
f"tr_loss: {tr_summary['loss']:.3f}, val_loss: {val_summary['loss']:.3f}\n"
f"tr_acc: {tr_summary['acc']:.2%}, val_acc: {val_summary['acc']:.2%}"
)
val_loss = val_summary['loss']
is_best = val_loss < best_val_loss
if is_best:
state = {
'epoch': epoch + 1,
'model_state_dict': model.state_dict(),
'opt_state_dict': opt.state_dict()
}
summary = {'train': tr_summary, 'validation': val_summary}
summary_manager.update(summary)
summary_manager.save('summary.json')
checkpoint_manager.save_checkpoint(state, 'best.tar')
best_val_loss = val_loss
def main(json_path):
cwd = Path.cwd()
with open(cwd / json_path) as io:
params = json.loads(io.read())
# tokenizer
vocab_path = params['filepath'].get('vocab')
with open(cwd / vocab_path, mode='rb') as io:
vocab = pickle.load(io)
length = params['padder'].get('length')
padder = PadSequence(length, pad_val=vocab.to_indices(vocab.padding_token))
tokenizer = Tokenizer(vocab=vocab, split_fn=split_to_jamo, pad_fn=padder)
# model
num_classes = params['model'].get('num_classes')
embedding_dim = params['model'].get('embedding_dim')
k_max = params['model'].get('k_max')
model = VDCNN(num_classes=num_classes, embedding_dim=embedding_dim, k_max=k_max, vocab=tokenizer.vocab)
# training
epochs = params['training'].get('epochs')
batch_size = params['training'].get('batch_size')
learning_rate = params['training'].get('learning_rate')
global_step = params['training'].get('global_step')
tr_path = cwd / params['filepath'].get('tr')
val_path = cwd / params['filepath'].get('val')
tr_ds = Corpus(tr_path, tokenizer.split_and_transform)
tr_dl = DataLoader(tr_ds, batch_size=batch_size, shuffle=True, num_workers=4, drop_last=True)
val_ds = Corpus(val_path, tokenizer.split_and_transform)
val_dl = DataLoader(val_ds, batch_size=batch_size, num_workers=4)
loss_fn = nn.CrossEntropyLoss()
opt = optim.Adam(params=model.parameters(), lr=learning_rate, weight_decay=1e-4)
scheduler = ReduceLROnPlateau(opt, patience=5)
device = torch.device('cuda') if torch.cuda.is_available() else torch.device('cpu')
model.to(device)
writer = SummaryWriter('./runs/{}'.format(params['version']))
for epoch in tqdm(range(epochs), desc='epochs'):
tr_loss = 0
model.train()
for step, mb in tqdm(enumerate(tr_dl), desc='steps', total=len(tr_dl)):
x_mb, y_mb = map(lambda elm: elm.to(device), mb)
opt.zero_grad()
mb_loss = loss_fn(model(x_mb), y_mb)
mb_loss.backward()
opt.step()
tr_loss += mb_loss.item()
if (epoch * len(tr_dl) + step) % global_step == 0:
val_loss = evaluate(model, val_dl, loss_fn, device)
writer.add_scalars('loss', {'train': tr_loss / (step + 1),
'validation': val_loss}, epoch * len(tr_dl) + step)
model.train()
else:
tr_loss /= (step + 1)
val_loss = evaluate(model, val_dl, loss_fn, device)
scheduler.step(val_loss)
tqdm.write('epoch : {}, tr_loss : {:.3f}, val_loss : {:.3f}'.format(epoch + 1, tr_loss, val_loss))
ckpt = {'model_state_dict': model.state_dict(),
'opt_state_dict': opt.state_dict()}
save_path = cwd / params['filepath'].get('ckpt')
torch.save(ckpt, save_path)
embedding_dim=model_config.embedding_dim,
k_max=model_config.k_max,
vocab=tokenizer.vocab)
# training
tr_ds = Corpus(data_config.train, tokenizer.split_and_transform)
tr_dl = DataLoader(tr_ds,
batch_size=model_config.batch_size,
shuffle=True,
num_workers=4,
drop_last=True)
val_ds = Corpus(data_config.validation, tokenizer.split_and_transform)
val_dl = DataLoader(val_ds, batch_size=model_config.batch_size)
loss_fn = nn.CrossEntropyLoss()
opt = optim.Adam(params=model.parameters(), lr=model_config.learning_rate)
scheduler = ReduceLROnPlateau(opt, patience=5)
device = torch.device(
'cuda') if torch.cuda.is_available() else torch.device('cpu')
model.to(device)
writer = SummaryWriter('{}/runs'.format(model_dir))
checkpoint_manager = CheckpointManager(model_dir)
summary_manager = SummaryManager(model_dir)
best_val_loss = 1e+10
for epoch in tqdm(range(model_config.epochs), desc='epochs'):
tr_loss = 0
tr_acc = 0
vocab=Vocab)
# training
tr_ds = Corpus(data_config.train, tokenizer.split_and_transform)
tr_dl = DataLoader(tr_ds,
batch_size=model_config.batch_size,
shuffle=True,
num_workers=4,
drop_last=True)
val_ds = Corpus(data_config.validation, tokenizer.split_and_transform)
val_dl = DataLoader(val_ds,
batch_size=model_config.batch_size,
shuffle=False,
num_workers=4)
loss_fn = nn.CrossEntropyLoss()
opt = optim.Adam(params=model.parameters(),
lr=model_config.learning_rate,
weight_decay=1e-4)
scheduler = ReduceLROnPlateau(opt, patience=5)
device = torch.device(
'cuda') if torch.cuda.is_available() else torch.device('cpu')
model.to(device)
writer = SummaryWriter('{}/runs'.format(model_dir))
for epoch in tqdm(range(model_config.epochs), desc='epochs'):
tr_loss = 0
tr_acc = 0
model.train()
for step, mb in tqdm(enumerate(tr_dl), desc='steps', total=len(tr_dl)):