def main():
parser = argparse.ArgumentParser()
## Required parameters
parser.add_argument(
"--data_dir",
default='/hdd/lujunyu/dataset/multi_turn_corpus/ubuntu/',
type=str,
required=False,
help=
"The input data dir. Should contain the .tsv files (or other data files) for the task."
)
parser.add_argument("--task_name",
default='ubuntu',
type=str,
required=False,
help="The name of the task to train.")
parser.add_argument(
"--output_dir",
default='/hdd/lujunyu/model/chatbert/ubuntu_base_ss_drawing/',
type=str,
required=False,
help="The output directory where the model checkpoints will be written."
)
## Other parameters
parser.add_argument(
"--init_model_name",
default='bert-base-uncased',
type=str,
help="Initial checkpoint (usually from a pre-trained BERT model).")
parser.add_argument(
"--do_lower_case",
default=True,
action='store_true',
help=
"Whether to lower case the input text. True for uncased models, False for cased models."
)
parser.add_argument("--data_augmentation",
default=False,
action='store_true',
help="Whether to use augmentation")
parser.add_argument(
"--max_seq_length",
default=256,
type=int,
help=
"The maximum total input sequence length after WordPiece tokenization. \n"
"Sequences longer than this will be truncated, and sequences shorter \n"
"than this will be padded.")
parser.add_argument("--do_train",
default=True,
action='store_true',
help="Whether to run training.")
parser.add_argument("--do_test",
default=True,
action='store_true',
help="Whether to run eval on the test set.")
parser.add_argument("--train_batch_size",
default=500,
type=int,
help="Total batch size for training.")
parser.add_argument("--eval_batch_size",
default=200,
type=int,
help="Total batch size for eval.")
parser.add_argument("--learning_rate",
default=5e-5,
type=float,
help="The initial learning rate for Adam.")
parser.add_argument("--num_train_epochs",
default=10.0,
type=float,
help="Total number of training epochs to perform.")
parser.add_argument(
"--warmup_steps",
default=0.0,
type=float,
help=
"Proportion of training to perform linear learning rate warmup for. "
"E.g., 0.1 = 10%% of training.")
parser.add_argument("--weight_decay",
default=1e-3,
type=float,
help="weight_decay")
parser.add_argument("--save_checkpoints_steps",
default=4000,
type=int,
help="How often to save the model checkpoint.")
parser.add_argument("--no_cuda",
default=False,
action='store_true',
help="Whether not to use CUDA when available")
parser.add_argument("--local_rank",
type=int,
default=-1,
help="local_rank for distributed training on gpus")
parser.add_argument('--seed',
type=int,
default=42,
help="random seed for initialization")
parser.add_argument(
'--gradient_accumulation_steps',
type=int,
default=10,
help=
"Number of updates steps to accumualte before performing a backward/update pass."
)
args = parser.parse_args()
if args.local_rank == -1 or args.no_cuda:
device = torch.device("cuda" if torch.cuda.is_available()
and not args.no_cuda else "cpu")
n_gpu = torch.cuda.device_count()
else:
device = torch.device("cuda", args.local_rank)
n_gpu = 1
# Initializes the distributed backend which will take care of sychronizing nodes/GPUs
torch.distributed.init_process_group(backend='nccl')
logger.info("device %s n_gpu %d distributed training %r", device, n_gpu,
bool(args.local_rank != -1))
if args.gradient_accumulation_steps < 1:
raise ValueError(
"Invalid gradient_accumulation_steps parameter: {}, should be >= 1"
.format(args.gradient_accumulation_steps))
args.train_batch_size = int(args.train_batch_size /
args.gradient_accumulation_steps)
random.seed(args.seed)
np.random.seed(args.seed)
torch.manual_seed(args.seed)
if n_gpu > 0:
torch.cuda.manual_seed_all(args.seed)
if not args.do_train and not args.do_eval:
raise ValueError(
"At least one of `do_train` or `do_eval` must be True.")
bert_config = BertConfig.from_pretrained(args.init_model_name,
num_labels=2)
if args.max_seq_length > bert_config.max_position_embeddings:
raise ValueError(
"Cannot use sequence length {} because the BERT model was only trained up to sequence length {}"
.format(args.max_seq_length, bert_config.max_position_embeddings))
if os.path.exists(args.output_dir) and os.listdir(args.output_dir):
if args.do_train:
raise ValueError(
"Output directory ({}) already exists and is not empty.".
format(args.output_dir))
else:
os.makedirs(args.output_dir, exist_ok=True)
tokenizer = BertTokenizer.from_pretrained(args.init_model_name,
do_lower_case=args.do_lower_case)
if args.data_augmentation:
train_dataset = UbuntuDataset(file_path=os.path.join(
args.data_dir, "train_augment_3.txt"),
max_seq_length=args.max_seq_length,
tokenizer=tokenizer)
else:
train_dataset = UbuntuDataset(file_path=os.path.join(
args.data_dir, "train.txt"),
max_seq_length=args.max_seq_length,
tokenizer=tokenizer)
eval_dataset = UbuntuDataset(file_path=os.path.join(
args.data_dir, "valid.txt"),
max_seq_length=args.max_seq_length,
tokenizer=tokenizer)
train_dataloader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.train_batch_size,
sampler=RandomSampler(train_dataset),
num_workers=4)
eval_dataloader = torch.utils.data.DataLoader(
eval_dataset,
batch_size=args.eval_batch_size,
sampler=SequentialSampler(eval_dataset),
num_workers=4)
model = BertForSequenceClassification.from_pretrained(args.init_model_name,
config=bert_config)
model.to(device)
num_train_steps = None
if args.do_train:
num_train_steps = int(
len(train_dataset) / args.train_batch_size /
args.gradient_accumulation_steps * args.num_train_epochs)
# Prepare optimizer
param_optimizer = list(model.named_parameters())
# remove pooler, which is not used thus it produce None grad that break apex
param_optimizer = [n for n in param_optimizer]
no_decay = ['bias', 'LayerNorm.bias', 'LayerNorm.weight']
optimizer_grouped_parameters = [{
'params': [
p for n, p in param_optimizer
if not any(nd in n for nd in no_decay)
],
'weight_decay':
args.weight_decay
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay':
0.0
}]
optimizer = AdamW(optimizer_grouped_parameters, lr=args.learning_rate)
scheduler = WarmupLinearSchedule(optimizer,
warmup_steps=args.warmup_steps,
t_total=num_train_steps)
else:
optimizer = None
scheduler = None
if args.local_rank != -1:
model = torch.nn.parallel.DistributedDataParallel(
model, device_ids=[args.local_rank], output_device=args.local_rank)
elif n_gpu > 1:
model = torch.nn.DataParallel(model)
global_step = 0
best_metric = 0.0
if args.do_train:
logger.info("***** Running training *****")
logger.info(" Num examples = %d", len(train_dataset))
logger.info(" Batch size = %d", args.train_batch_size)
logger.info(" Num steps = %d", num_train_steps)
model.train()
for _ in trange(int(args.num_train_epochs), desc="Epoch"):
tr_loss = 0
nb_tr_examples, nb_tr_steps = 0, 0
for step, batch in enumerate(
tqdm(train_dataloader, desc="Iteration")):
batch = tuple(t.to(device) for t in batch)
input_ids, input_mask, segment_ids, label_ids = batch
loss, _ = model(input_ids,
token_type_ids=segment_ids,
attention_mask=input_mask,
labels=label_ids)
if n_gpu > 1:
loss = loss.mean() # mean() to average on multi-gpu.
if args.gradient_accumulation_steps > 1:
loss = loss / args.gradient_accumulation_steps
loss.backward()
tr_loss += loss.item()
nb_tr_examples += input_ids.size(0)
nb_tr_steps += 1
if (step + 1) % args.gradient_accumulation_steps == 0:
optimizer.step() # We have accumulated enought gradients
scheduler.step()
model.zero_grad()
global_step += 1
if step % args.save_checkpoints_steps == 0:
model.eval()
f = open(os.path.join(args.output_dir, 'logits_dev.txt'),
'w')
eval_loss = 0
nb_eval_steps, nb_eval_examples = 0, 0
logits_all = []
for input_ids, input_mask, segment_ids, label_ids in eval_dataloader:
input_ids = input_ids.to(device)
input_mask = input_mask.to(device)
segment_ids = segment_ids.to(device)
label_ids = label_ids.to(device)
with torch.no_grad():
tmp_eval_loss, logits = model(
input_ids,
token_type_ids=segment_ids,
attention_mask=input_mask,
labels=label_ids)
logits = logits.detach().cpu().numpy()
logits_all.append(logits)
label_ids = label_ids.cpu().numpy()
for logit, label in zip(logits, label_ids):
logit = '{},{}'.format(logit[0], logit[1])
f.write('_\t{}\t{}\n'.format(logit, label))
eval_loss += tmp_eval_loss.mean().item()
nb_eval_examples += input_ids.size(0)
nb_eval_steps += 1
f.close()
logits_all = np.concatenate(logits_all, axis=0)
eval_loss = eval_loss / nb_eval_steps
result = evaluate(
os.path.join(args.output_dir, 'logits_dev.txt'))
result.update({'eval_loss': eval_loss})
output_eval_file = os.path.join(args.output_dir,
"eval_results_dev.txt")
with open(output_eval_file, "a") as writer:
logger.info("***** Eval results *****")
for key in sorted(result.keys()):
logger.info(" %s = %s", key, str(result[key]))
writer.write("%s = %s\n" % (key, str(result[key])))
### Save the best checkpoint
if best_metric < result['R10@1'] + result['R10@2']:
try: ### Remove 'module' prefix when using DataParallel
state_dict = model.module.state_dict()
except AttributeError:
state_dict = model.state_dict()
torch.save(state_dict,
os.path.join(args.output_dir, "model.pt"))
best_metric = result['R10@1'] + result['R10@2']
logger.info('Saving the best model in {}'.format(
os.path.join(args.output_dir, "model.pt")))
### visualize bad cases of the best model
logger.info('Saving Bad cases...')
visualize_bad_cases(logits=logits_all,
input_file_path=os.path.join(
args.data_dir, 'valid.txt'),
output_file_path=os.path.join(
args.output_dir,
'valid_bad_cases.txt'))
model.train()
def main():
parser = argparse.ArgumentParser()
## Required parameters
parser.add_argument(
"--data_dir",
default='/hdd/lujunyu/dataset/multi_turn_corpus/douban/',
type=str,
required=False,
help=
"The input data dir. Should contain the .tsv files (or other data files) for the task."
)
parser.add_argument("--task_name",
default='douban',
type=str,
required=False,
help="The name of the task to train.")
parser.add_argument(
"--output_dir",
default='/hdd/lujunyu/model/chatbert/douban_without_pretraining/',
type=str,
required=False,
help="The output directory where the model checkpoints will be written."
)
parser.add_argument(
"--init_model_name",
default='bert-base-chinese',
type=str,
help="Initial checkpoint (usually from a pre-trained BERT model).")
## Other parameters
parser.add_argument(
"--do_lower_case",
default=True,
action='store_true',
help=
"Whether to lower case the input text. True for uncased models, False for cased models."
)
parser.add_argument(
"--max_seq_length",
default=256,
type=int,
help=
"The maximum total input sequence length after WordPiece tokenization. \n"
"Sequences longer than this will be truncated, and sequences shorter \n"
"than this will be padded.")
parser.add_argument("--eval_batch_size",
default=500,
type=int,
help="Total batch size for eval.")
parser.add_argument("--no_cuda",
default=False,
action='store_true',
help="Whether not to use CUDA when available")
parser.add_argument("--local_rank",
type=int,
default=-1,
help="local_rank for distributed training on gpus")
args = parser.parse_args()
if args.local_rank == -1 or args.no_cuda:
device = torch.device("cuda" if torch.cuda.is_available()
and not args.no_cuda else "cpu")
n_gpu = torch.cuda.device_count()
else:
device = torch.device("cuda", args.local_rank)
n_gpu = 1
# Initializes the distributed backend which will take care of sychronizing nodes/GPUs
torch.distributed.init_process_group(backend='nccl')
bert_config = BertConfig.from_pretrained(args.init_model_name)
tokenizer = BertTokenizer.from_pretrained(args.init_model_name,
do_lower_case=args.do_lower_case)
if args.max_seq_length > bert_config.max_position_embeddings:
raise ValueError(
"Cannot use sequence length {} because the BERT model was only trained up to sequence length {}"
.format(args.max_seq_length, bert_config.max_position_embeddings))
test_dataset = DoubanDatasetForSP(file_path=os.path.join(
args.data_dir, "test.txt"),
max_seq_length=args.max_seq_length,
tokenizer=tokenizer)
test_dataloader = torch.utils.data.DataLoader(
test_dataset,
batch_size=args.eval_batch_size,
sampler=SequentialSampler(test_dataset),
num_workers=4)
model = BertForSequenceClassification.from_pretrained(os.path.join(
args.output_dir, 'model.pt'),
config=bert_config)
model.to(device)
if args.local_rank != -1:
model = torch.nn.parallel.DistributedDataParallel(
model, device_ids=[args.local_rank], output_device=args.local_rank)
elif n_gpu > 1:
model = torch.nn.DataParallel(model)
logger.info("***** Running testing *****")
logger.info(" Num examples = %d", len(test_dataset))
logger.info(" Batch size = %d", args.eval_batch_size)
f = open(os.path.join(args.output_dir, 'logits_test.txt'), 'w')
model.eval()
test_loss = 0
nb_test_steps, nb_test_examples = 0, 0
logits_all = []
for input_ids, input_mask, segment_ids, label_ids in test_dataloader:
input_ids = input_ids.to(device)
input_mask = input_mask.to(device)
segment_ids = segment_ids.to(device)
label_ids = label_ids.to(device)
with torch.no_grad():
tmp_test_loss, logits = model(input_ids,
token_type_ids=segment_ids,
attention_mask=input_mask,
labels=label_ids)
logits = logits.detach().cpu().numpy()
logits_all.append(logits)
label_ids = label_ids.to('cpu').numpy()
for logit, label in zip(logits, label_ids):
logit = '{},{}'.format(logit[0], logit[1])
f.write('_\t{}\t{}\n'.format(logit, label))
test_loss += tmp_test_loss.mean().item()
nb_test_examples += input_ids.size(0)
nb_test_steps += 1
f.close()
logits_all = np.concatenate(logits_all, axis=0)
result = evaluate(os.path.join(args.output_dir, 'logits_test.txt'))
test_loss = test_loss / nb_test_steps
### visualize bad cases of the best model
logger.info('Saving Bad cases...')
visualize_bad_cases(logits=logits_all,
input_file_path=os.path.join(args.data_dir,
'test.txt'),
output_file_path=os.path.join(args.output_dir,
'test_cases.txt'))
output_eval_file = os.path.join(args.output_dir, "results_test.txt")
with open(output_eval_file, "w") as writer:
logger.info("***** Test results *****")
logger.info('test_loss: %s', test_loss)
for key in sorted(result.keys()):
logger.info(" %s = %s", key, str(result[key]))
writer.write("%s = %s\n" % (key, str(result[key])))