def train_and_validate(args):
set_seed(args.seed)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build model.
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model = load_model(model, args.pretrained_model_path)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
if args.dist_train:
# Multiprocessing distributed mode.
mp.spawn(worker,
nprocs=args.ranks_num,
args=(args.gpu_ranks, args, model),
daemon=False)
elif args.single_gpu:
# Single GPU mode.
worker(args.gpu_id, None, args, model)
else:
# CPU mode.
worker(None, None, args, model)
def train_and_validate(args):
set_seed(args.seed)
# Load vocabulary.
if args.spm_model_path:
try:
import sentencepiece as spm
except ImportError:
raise ImportError(
"You need to install SentencePiece to use XLNetTokenizer: https://github.com/google/sentencepiece"
"pip install sentencepiece")
sp_model = spm.SentencePieceProcessor()
sp_model.Load(args.spm_model_path)
args.vocab = {
sp_model.IdToPiece(i): i
for i in range(sp_model.GetPieceSize())
}
if args.target == "mt":
tgt_sp_model = spm.SentencePieceProcessor()
tgt_sp_model.Load(args.tgt_spm_model_path)
args.tgt_vocab = {
tgt_sp_model.IdToPiece(i): i
for i in range(tgt_sp_model.GetPieceSize())
}
else:
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab.w2i
if args.target == "mt":
tgt_vocab = Vocab()
tgt_vocab.load(args.tgt_vocab_path)
args.tgt_vocab = tgt_vocab.w2i
# Build model.
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model = load_model(model, args.pretrained_model_path)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
if args.dist_train:
# Multiprocessing distributed mode.
mp.spawn(worker,
nprocs=args.ranks_num,
args=(args.gpu_ranks, args, model),
daemon=False)
elif args.single_gpu:
# Single GPU mode.
worker(args.gpu_id, None, args, model)
else:
# CPU mode.
worker(None, None, args, model)
def train_and_validate(args):
set_seed(args.seed)
# Load vocabulary.
if args.data_processor == "mt":
args.tgt_tokenizer = str2tokenizer[args.tgt_tokenizer](args,
is_src=False)
args.tgt_vocab = args.tgt_tokenizer.vocab
args.tokenizer = str2tokenizer[args.tokenizer](args)
args.vocab = args.tokenizer.vocab
# Build model.
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model = load_model(model, args.pretrained_model_path)
else:
# Initialize with normal distribution.
if args.deep_init:
scaled_factor = 1 / math.sqrt(2.0 * args.layers_num)
for n, p in list(model.named_parameters()):
if "gamma" not in n and "beta" not in n:
if "linear_2.weight" in n or "final_linear.weight" in n:
p.data.normal_(0, 0.02 * scaled_factor)
elif "linear_2.bias" in n or "final_linear.bias" in n:
p.data.zero_()
else:
p.data.normal_(0, 0.02)
else:
for n, p in list(model.named_parameters()):
if "gamma" not in n and "beta" not in n:
p.data.normal_(0, 0.02)
if args.deepspeed:
worker(args.local_rank, None, args, model)
elif args.dist_train:
# Multiprocessing distributed mode.
mp.spawn(worker,
nprocs=args.ranks_num,
args=(args.gpu_ranks, args, model),
daemon=False)
elif args.single_gpu:
# Single GPU mode.
worker(args.gpu_id, None, args, model)
else:
# CPU mode.
worker(None, None, args, model)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default=None,
type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path",
default="./models/ner_model.bin",
type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path",
type=str,
required=True,
help="Path of the vocabulary file.")
parser.add_argument("--train_path",
type=str,
required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path",
type=str,
required=True,
help="Path of the devset.")
parser.add_argument("--test_path", type=str, help="Path of the testset.")
parser.add_argument("--config_path",
default="./models/bert_base_config.json",
type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size",
type=int,
default=32,
help="Batch_size.")
parser.add_argument("--seq_length",
default=128,
type=int,
help="Sequence length.")
parser.add_argument("--embedding",
choices=["bert", "word"],
default="bert",
help="Emebdding type.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.1, help="Dropout.")
parser.add_argument("--epochs_num",
type=int,
default=3,
help="Number of epochs.")
parser.add_argument("--report_steps",
type=int,
default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
args = parser.parse_args()
# Load the hyperparameters of the config file.
args = load_hyperparam(args)
set_seed(args.seed)
labels_map = {"[PAD]": 0}
begin_ids = []
# Find tagging labels
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
labels = line.strip().split("\t")[1].split()
for l in labels:
if l not in labels_map:
if l.startswith("B") or l.startswith("S"):
begin_ids.append(len(labels_map))
labels_map[l] = len(labels_map)
print("Labels: ", labels_map)
args.labels_num = len(labels_map)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build sequence labeling model.
model = BertTagger(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(
torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
label_ids_batch = label_ids[i * batch_size:(i + 1) * batch_size, :]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
label_ids_batch = label_ids[instances_num // batch_size *
batch_size:, :]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
# Read dataset.
def read_dataset(path):
dataset = []
with open(path, mode="r", encoding="utf-8") as f:
f.readline()
tokens, labels = [], []
for line_id, line in enumerate(f):
tokens, labels = line.strip().split("\t")
tokens = [vocab.get(t) for t in tokens.split(" ")]
labels = [labels_map[l] for l in labels.split(" ")]
mask = [1] * len(tokens)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
labels = labels[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
labels.append(0)
mask.append(0)
dataset.append([tokens, labels, mask])
return dataset
# Evaluation function.
def evaluate(args, is_test):
if is_test:
dataset = read_dataset(args.test_path)
else:
dataset = read_dataset(args.dev_path)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
instances_num = input_ids.size(0)
batch_size = args.batch_size
if is_test:
print("Batch size: ", batch_size)
print("The number of test instances:", instances_num)
correct = 0
gold_entities_num = 0
pred_entities_num = 0
confusion = torch.zeros(len(labels_map),
len(labels_map),
dtype=torch.long)
model.eval()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
loss, _, pred, gold = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
for j in range(gold.size()[0]):
if gold[j].item() in begin_ids:
gold_entities_num += 1
for j in range(pred.size()[0]):
if pred[j].item(
) in begin_ids and gold[j].item() != labels_map["[PAD]"]:
pred_entities_num += 1
pred_entities_pos = []
gold_entities_pos = []
start, end = 0, 0
for j in range(gold.size()[0]):
if gold[j].item() in begin_ids:
start = j
for k in range(j + 1, gold.size()[0]):
if gold[k].item(
) == labels_map["[PAD]"] or gold[k].item(
) == labels_map["O"] or gold[k].item() in begin_ids:
end = k - 1
break
else:
end = gold.size()[0] - 1
gold_entities_pos.append((start, end))
for j in range(pred.size()[0]):
if pred[j].item(
) in begin_ids and gold[j].item() != labels_map["[PAD]"]:
start = j
for k in range(j + 1, pred.size()[0]):
if pred[k].item(
) == labels_map["[PAD]"] or pred[k].item(
) == labels_map["O"] or pred[k].item() in begin_ids:
end = k - 1
break
else:
end = pred.size()[0] - 1
pred_entities_pos.append((start, end))
for entity in pred_entities_pos:
if entity not in gold_entities_pos:
continue
for j in range(entity[0], entity[1] + 1):
if gold[j].item() != pred[j].item():
break
else:
correct += 1
print("Report precision, recall, and f1:")
p = correct / pred_entities_num
r = correct / gold_entities_num
f1 = 2 * p * r / (p + r)
print("{:.3f}, {:.3f}, {:.3f}".format(p, r, f1))
return f1
# Training phase.
print("Start training.")
instances = read_dataset(args.train_path)
input_ids = torch.LongTensor([ins[0] for ins in instances])
label_ids = torch.LongTensor([ins[1] for ins in instances])
mask_ids = torch.LongTensor([ins[2] for ins in instances])
instances_num = input_ids.size(0)
batch_size = args.batch_size
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
print("Batch size: ", batch_size)
print("The number of training instances:", instances_num)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.0
}]
ooptimizer = AdamW(optimizer_grouped_parameters,
lr=args.learning_rate,
correct_bias=False)
scheduler = WarmupLinearSchedule(optimizer,
warmup_steps=train_steps * args.warmup,
t_total=train_steps)
total_loss = 0.
f1 = 0.0
best_f1 = 0.0
for epoch in range(1, args.epochs_num + 1):
model.train()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids)):
model.zero_grad()
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
loss, _, _, _ = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".
format(epoch, i + 1, total_loss / args.report_steps))
total_loss = 0.
loss.backward()
optimizer.step()
scheduler.step()
f1 = evaluate(args, False)
if f1 > best_f1:
best_f1 = f1
save_model(model, args.output_model_path)
else:
continue
# Evaluation phase.
if args.test_path is not None:
print("Test set evaluation.")
model = load_model(model, args.output_model_path)
evaluate(args, True)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default=None,
type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path",
default="./models/classifier_model.bin",
type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path",
default="./models/google_vocab.txt",
type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path",
type=str,
required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path",
type=str,
required=True,
help="Path of the devset.")
parser.add_argument("--test_path", type=str, help="Path of the testset.")
parser.add_argument("--config_path",
default="./models/bert_base_config.json",
type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size",
type=int,
default=64,
help="Batch size.")
parser.add_argument("--seq_length",
type=int,
default=128,
help="Sequence length.")
parser.add_argument("--embedding",
choices=["bert", "word"],
default="bert",
help="Emebdding type.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
parser.add_argument("--pooling",
choices=["mean", "max", "first", "last"],
default="first",
help="Pooling type.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Tokenizer options.
parser.add_argument(
"--tokenizer",
choices=["bert", "char", "space"],
default="bert",
help="Specify the tokenizer."
"Original Google BERT uses bert tokenizer on Chinese corpus."
"Char tokenizer segments sentences into characters."
"Space tokenizer segments sentences into words according to space.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.5, help="Dropout.")
parser.add_argument("--epochs_num",
type=int,
default=3,
help="Number of epochs.")
parser.add_argument("--report_steps",
type=int,
default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
# Evaluation options.
parser.add_argument("--mean_reciprocal_rank",
action="store_true",
help="Evaluation metrics for DBQA dataset.")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
set_seed(args.seed)
# Count the number of labels.
labels_set = set()
columns = {}
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
try:
line = line.strip().split("\t")
if line_id == 0:
for i, column_name in enumerate(line):
columns[column_name] = i
continue
label = int(line[columns["label"]])
labels_set.add(label)
except:
pass
args.labels_num = len(labels_set)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build classification model.
model = BertClassifier(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(
torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
label_ids_batch = label_ids[i * batch_size:(i + 1) * batch_size]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
label_ids_batch = label_ids[instances_num // batch_size *
batch_size:]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
# Build tokenizer.
tokenizer = globals()[args.tokenizer.capitalize() + "Tokenizer"](args)
# Read dataset.
def read_dataset(path):
dataset = []
with open(path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
try:
line = line.strip().split('\t')
if len(line) == 2:
label = int(line[columns["label"]])
text = line[columns["text_a"]]
tokens = [
vocab.get(t) for t in tokenizer.tokenize(text)
]
tokens = [CLS_ID] + tokens
mask = [1] * len(tokens)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
mask.append(0)
dataset.append((tokens, label, mask))
elif len(line) == 3: # For sentence pair input.
label = int(line[columns["label"]])
text_a, text_b = line[columns["text_a"]], line[
columns["text_b"]]
tokens_a = [
vocab.get(t) for t in tokenizer.tokenize(text_a)
]
tokens_a = [CLS_ID] + tokens_a + [SEP_ID]
tokens_b = [
vocab.get(t) for t in tokenizer.tokenize(text_b)
]
tokens_b = tokens_b + [SEP_ID]
tokens = tokens_a + tokens_b
mask = [1] * len(tokens_a) + [2] * len(tokens_b)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
mask.append(0)
dataset.append((tokens, label, mask))
elif len(line) == 4: # For dbqa input.
qid = int(line[columns["qid"]])
label = int(line[columns["label"]])
text_a, text_b = line[columns["text_a"]], line[
columns["text_b"]]
tokens_a = [
vocab.get(t) for t in tokenizer.tokenize(text_a)
]
tokens_a = [CLS_ID] + tokens_a + [SEP_ID]
tokens_b = [
vocab.get(t) for t in tokenizer.tokenize(text_b)
]
tokens_b = tokens_b + [SEP_ID]
tokens = tokens_a + tokens_b
mask = [1] * len(tokens_a) + [2] * len(tokens_b)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
mask.append(0)
dataset.append((tokens, label, mask, qid))
else:
pass
except:
pass
return dataset
# Evaluation function.
def evaluate(args, is_test):
if is_test:
dataset = read_dataset(args.test_path)
else:
dataset = read_dataset(args.dev_path)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
batch_size = args.batch_size
instances_num = input_ids.size()[0]
if is_test:
print("The number of evaluation instances: ", instances_num)
correct = 0
# Confusion matrix.
confusion = torch.zeros(args.labels_num,
args.labels_num,
dtype=torch.long)
model.eval()
if not args.mean_reciprocal_rank:
for i, (input_ids_batch, label_ids_batch,
mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
logits = nn.Softmax(dim=1)(logits)
pred = torch.argmax(logits, dim=1)
gold = label_ids_batch
for j in range(pred.size()[0]):
confusion[pred[j], gold[j]] += 1
correct += torch.sum(pred == gold).item()
if is_test:
print("Confusion matrix:")
print(confusion)
print("Report precision, recall, and f1:")
for i in range(confusion.size()[0]):
p = confusion[i, i].item() / confusion[i, :].sum().item()
r = confusion[i, i].item() / confusion[:, i].sum().item()
f1 = 2 * p * r / (p + r)
if is_test:
print("Label {}: {:.3f}, {:.3f}, {:.3f}".format(
i, p, r, f1))
print("Acc. (Correct/Total): {:.4f} ({}/{}) ".format(
correct / len(dataset), correct, len(dataset)))
return correct / len(dataset)
else:
for i, (input_ids_batch, label_ids_batch,
mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
logits = nn.Softmax(dim=1)(logits)
if i == 0:
logits_all = logits
if i >= 1:
logits_all = torch.cat((logits_all, logits), 0)
order = -1
gold = []
for i in range(len(dataset)):
qid = dataset[i][3]
label = dataset[i][1]
if qid == order:
j += 1
if label == 1:
gold.append((qid, j))
else:
order = qid
j = 0
if label == 1:
gold.append((qid, j))
label_order = []
order = -1
for i in range(len(gold)):
if gold[i][0] == order:
templist.append(gold[i][1])
elif gold[i][0] != order:
order = gold[i][0]
if i > 0:
label_order.append(templist)
templist = []
templist.append(gold[i][1])
label_order.append(templist)
order = -1
score_list = []
for i in range(len(logits_all)):
score = float(logits_all[i][1])
qid = int(dataset[i][3])
if qid == order:
templist.append(score)
else:
order = qid
if i > 0:
score_list.append(templist)
templist = []
templist.append(score)
score_list.append(templist)
rank = []
pred = []
for i in range(len(score_list)):
if len(label_order[i]) == 1:
if label_order[i][0] < len(score_list[i]):
true_score = score_list[i][label_order[i][0]]
score_list[i].sort(reverse=True)
for j in range(len(score_list[i])):
if score_list[i][j] == true_score:
rank.append(1 / (j + 1))
else:
rank.append(0)
else:
true_rank = len(score_list[i])
for k in range(len(label_order[i])):
if label_order[i][k] < len(score_list[i]):
true_score = score_list[i][label_order[i][k]]
temp = sorted(score_list[i], reverse=True)
for j in range(len(temp)):
if temp[j] == true_score:
if j < true_rank:
true_rank = j
if true_rank < len(score_list[i]):
rank.append(1 / (true_rank + 1))
else:
rank.append(0)
MRR = sum(rank) / len(rank)
print(MRR)
return MRR
# Training phase.
print("Start training.")
trainset = read_dataset(args.train_path)
random.shuffle(trainset)
instances_num = len(trainset)
batch_size = args.batch_size
input_ids = torch.LongTensor([example[0] for example in trainset])
label_ids = torch.LongTensor([example[1] for example in trainset])
mask_ids = torch.LongTensor([example[2] for example in trainset])
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
print("Batch size: ", batch_size)
print("The number of training instances:", instances_num)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.0
}]
optimizer = BertAdam(optimizer_grouped_parameters,
lr=args.learning_rate,
warmup=args.warmup,
t_total=train_steps)
total_loss = 0.
result = 0.0
best_result = 0.0
for epoch in range(1, args.epochs_num + 1):
model.train()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids)):
model.zero_grad()
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
loss, _ = model(input_ids_batch, label_ids_batch, mask_ids_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".
format(epoch, i + 1, total_loss / args.report_steps))
total_loss = 0.
loss.backward()
optimizer.step()
result = evaluate(args, False)
if result > best_result:
best_result = result
save_model(model, args.output_model_path)
else:
continue
# Evaluation phase.
if args.test_path is not None:
print("Test set evaluation.")
model = load_model(model, args.output_model_path)
evaluate(args, True)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default=None,
type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path",
default="./models/QA_model.bin",
type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path",
default="./models/google_vocab.txt",
type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path",
type=str,
required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path",
type=str,
required=True,
help="Path of the devset.")
parser.add_argument("--test_path", type=str, help="Path of the testset.")
parser.add_argument("--config_path",
default="./models/google_config.json",
type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size",
type=int,
default=64,
help="Batch size.")
parser.add_argument("--seq_length",
type=int,
default=100,
help="Sequence length.")
parser.add_argument(
"--doc_stride",
default=128,
type=int,
help=
"When splitting up a long document into chunks, how much stride to take between chunks."
)
parser.add_argument("--embedding",
choices=["bert", "word"],
default="bert",
help="Emebdding type.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Tokenizer options.
parser.add_argument(
"--tokenizer",
choices=["bert", "char", "space"],
default="char",
help="Specify the tokenizer."
"Original Google BERT uses bert tokenizer on Chinese corpus."
"Char tokenizer segments sentences into characters."
"Space tokenizer segments sentences into words according to space.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=3e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.5, help="Dropout.")
parser.add_argument("--epochs_num",
type=int,
default=3,
help="Number of epochs.")
parser.add_argument("--report_steps",
type=int,
default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
set_seed(args.seed)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
args.target = "bert"
bert_model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
bert_model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(bert_model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build QA model.
model = BertQuestionAnswering(args, bert_model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(
torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
# Dataset loader.
def batch_loader(batch_size, input_ids, mask_ids, start_positions,
end_positions):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
start_positions_batch = start_positions[i * batch_size:(i + 1) *
batch_size]
end_positions_batch = end_positions[i * batch_size:(i + 1) *
batch_size]
yield input_ids_batch, mask_ids_batch, start_positions_batch, end_positions_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
start_positions_batch = start_positions[instances_num //
batch_size * batch_size:]
end_positions_batch = end_positions[instances_num // batch_size *
batch_size:]
yield input_ids_batch, mask_ids_batch, start_positions_batch, end_positions_batch
# Build tokenizer.
tokenizer = globals()[args.tokenizer.capitalize() + "Tokenizer"](args)
# Read examples.
def read_examples(path):
examples = []
with open(path, 'r', encoding='utf-8') as fp:
all_dict = json.loads(fp.read())
v1 = all_dict["data"]
for i in range(len(v1)):
data_dict = v1[i]
v2 = data_dict["paragraphs"]
for j in range(len(v2)):
para_dict = v2[j]
context = para_dict["context"]
v3 = para_dict["qas"]
for m in range(len(v3)):
qas_dict = v3[m]
question = qas_dict["question"]
question_id = qas_dict["id"]
v4 = qas_dict["answers"]
answers = []
start_positions = []
end_positions = []
for n in range(len(v4)):
ans_dict = v4[n]
answer = ans_dict["text"]
start_position = ans_dict["answer_start"]
end_position = start_position + len(answer)
answers.append(answer)
start_positions.append(start_position)
end_positions.append(end_position)
examples.append(
(context, question, question_id, start_positions,
end_positions, answers))
return examples
def convert_examples_to_dataset(examples, args):
dataset = []
print("The number of questions in the dataset", len(examples))
for i in range(len(examples)):
context = examples[i][0]
question = examples[i][1]
q_len = len(question)
question_id = examples[i][2]
start_positions_true = examples[i][3][0] #待修改
end_positions_true = examples[i][4][0]
answers = examples[i][5]
max_context_length = args.seq_length - q_len - 3
# divide the context to some spans
_DocSpan = collections.namedtuple( # pylint: disable=invalid-name
"DocSpan", ["start", "length"])
doc_spans = []
start_offset = 0
while start_offset < len(context):
length = len(context) - start_offset
if length > max_context_length:
length = max_context_length
doc_spans.append(_DocSpan(start=start_offset, length=length))
if start_offset + length == len(context):
break
start_offset += min(length, args.doc_stride)
for (doc_span_index, doc_span) in enumerate(doc_spans):
doc_span_start = doc_span.start
span_context = context[doc_span_start:doc_span_start +
doc_span.length]
# convert the start or end position to real position in tokens
start_positions = start_positions_true - doc_span_start + q_len + 2
end_positions = end_positions_true - doc_span_start + q_len + 2
# the answers of some question are not in the doc_span, we ignore them.
if start_positions < q_len + 2 or start_positions > doc_span.length + q_len + 2 or end_positions < q_len + 2 or end_positions > doc_span.length + q_len + 2:
continue
tokens_a = [vocab.get(t) for t in tokenizer.tokenize(question)]
tokens_a = [CLS_ID] + tokens_a + [SEP_ID]
tokens_b = [
vocab.get(t) for t in tokenizer.tokenize(span_context)
]
tokens_b = tokens_b + [SEP_ID]
tokens = tokens_a + tokens_b
mask = [1] * len(tokens_a) + [2] * len(tokens_b)
while len(tokens) < args.seq_length:
tokens.append(0)
mask.append(0)
dataset.append(
(tokens, mask, start_positions, end_positions, answers,
question_id, q_len, doc_span_index, doc_span_start))
return dataset
# Evaluation function.
def evaluate(args, is_test):
# some calculation functions
def mixed_segmentation(in_str, rm_punc=False):
in_str = str(in_str).lower().strip()
segs_out = []
temp_str = ""
sp_char = [
'-', ':', '_', '*', '^', '/', '\\', '~', '`', '+', '=', '，',
'。', '：', '？', '！', '“', '”', '；', '’', '《', '》', '……', '·',
'、', '「', '」', '（', '）', '－', '～', '『', '』'
]
for char in in_str:
if rm_punc and char in sp_char:
continue
if re.search(r'[\u4e00-\u9fa5]', char) or char in sp_char:
if temp_str != "":
ss = nltk.word_tokenize(temp_str)
segs_out.extend(ss)
temp_str = ""
segs_out.append(char)
else:
temp_str += char
#handling last part
if temp_str != "":
ss = nltk.word_tokenize(temp_str)
segs_out.extend(ss)
return segs_out
# remove punctuation
def remove_punctuation(in_str):
in_str = str(in_str).lower().strip()
sp_char = [
'-', ':', '_', '*', '^', '/', '\\', '~', '`', '+', '=', '，',
'。', '：', '？', '！', '“', '”', '；', '’', '《', '》', '……', '·',
'、', '「', '」', '（', '）', '－', '～', '『', '』'
]
out_segs = []
for char in in_str:
if char in sp_char:
continue
else:
out_segs.append(char)
return ''.join(out_segs)
# find longest common string
def find_lcs(s1, s2):
m = [[0 for i in range(len(s2) + 1)] for j in range(len(s1) + 1)]
mmax = 0
p = 0
for i in range(len(s1)):
for j in range(len(s2)):
if s1[i] == s2[j]:
m[i + 1][j + 1] = m[i][j] + 1
if m[i + 1][j + 1] > mmax:
mmax = m[i + 1][j + 1]
p = i + 1
return s1[p - mmax:p], mmax
def calc_f1_score(answers, prediction):
f1_scores = []
for i in range(len(answers)):
ans = answers[i]
ans_segs = mixed_segmentation(ans, rm_punc=True)
prediction_segs = mixed_segmentation(prediction, rm_punc=True)
lcs, lcs_len = find_lcs(ans_segs, prediction_segs)
if lcs_len == 0:
f1_scores.append(0)
else:
precision = 1.0 * lcs_len / len(prediction_segs)
recall = 1.0 * lcs_len / len(ans_segs)
f1 = (2 * precision * recall) / (precision + recall)
f1_scores.append(f1)
return max(f1_scores)
def calc_em_score(answers, prediction):
em = 0
for i in range(len(answers)):
ans = answers[i]
ans_ = remove_punctuation(ans)
prediction_ = remove_punctuation(prediction)
if ans_ == prediction_:
em = 1
break
return em
def is_max_score(score_list):
score_max = -100
index_max = 0
best_start_prediction = 0
best_end_prediction = 0
for i in range(len(score_list)):
if score_max <= score_list[i][3]:
score_max = score_list[i][3]
index_max = score_list[i][0]
best_start_prediction = score_list[i][1]
best_end_prediction = score_list[i][2]
return index_max, best_start_prediction, best_end_prediction
if is_test:
examples = read_examples(args.test_path)
dataset = convert_examples_to_dataset(examples, args)
else:
examples = read_examples(args.dev_path)
dataset = convert_examples_to_dataset(examples, args)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
mask_ids = torch.LongTensor([sample[1] for sample in dataset])
start_positions = torch.LongTensor([sample[2] for sample in dataset])
end_positions = torch.LongTensor([sample[3] for sample in dataset])
batch_size = args.batch_size
instances_num = input_ids.size()[0]
if is_test:
print("The number of evaluation instances: ", instances_num)
model.eval()
start_logits_all = []
end_logits_all = []
start_pred_all = []
end_pred_all = []
for i, (input_ids_batch, mask_ids_batch, start_positions_batch,
end_positions_batch) in enumerate(
batch_loader(batch_size, input_ids, mask_ids,
start_positions, end_positions)):
model.zero_grad()
input_ids_batch = input_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
start_positions_batch = start_positions_batch.to(device)
end_positions_batch = end_positions_batch.to(device)
with torch.no_grad():
loss, start_logits, end_logits = model(input_ids_batch,
mask_ids_batch,
start_positions_batch,
end_positions_batch)
start_logits = nn.Softmax(dim=1)(start_logits)
end_logits = nn.Softmax(dim=1)(end_logits)
start_pred = torch.argmax(start_logits, dim=1)
end_pred = torch.argmax(end_logits, dim=1)
start_pred = start_pred.cpu().numpy().tolist()
end_pred = end_pred.cpu().numpy().tolist()
start_logits = start_logits.cpu().numpy().tolist()
end_logits = end_logits.cpu().numpy().tolist()
start_logits_max = []
end_logits_max = []
for j in range(len(start_pred)):
start_logits_max.append(start_logits[j][start_pred[j]])
end_logits_max.append(end_logits[j][end_pred[j]])
start_logits_all += start_logits_max
end_logits_all += end_logits_max
start_pred_all += start_pred
end_pred_all += end_pred
assert len(start_pred_all) == len(dataset)
assert len(start_logits_all) == len(dataset)
# couster by question id and chose the best answer in doc_spans
order = -1
pred_list = []
templist = []
for i in range(len(dataset)):
qid = dataset[i][5]
q_len = dataset[i][6]
span_index = dataset[i][7]
doc_span_start = dataset[i][8]
score1 = float(start_logits_all[i])
score2 = float(end_logits_all[i])
score = (score1 + score2) / 2
pre_start_pred = start_pred_all[i] + doc_span_start - q_len - 2
pre_end_pred = end_pred_all[i] + doc_span_start - q_len - 2
if qid == order:
templist.append(
(span_index, pre_start_pred, pre_end_pred, score))
else:
order = qid
if i > 0:
span_index_max, best_start_prediction, best_end_prediction = is_max_score(
templist)
pred_list.append((span_index_max, best_start_prediction,
best_end_prediction))
templist = []
templist.append(
(span_index, pre_start_pred, pre_end_pred, score))
span_index_max, best_start_prediction, best_end_prediction = is_max_score(
templist)
pred_list.append(
(span_index_max, best_start_prediction, best_end_prediction))
assert len(pred_list) == len(examples)
#strat pred
f1 = 0
em = 0
total_count = len(examples)
skip_count = 0
for i in range(len(examples)):
question_id = examples[i][2]
answers = examples[i][5]
span_index = pred_list[i][0]
start_prediction = pred_list[i][1]
end_prediction = pred_list[i][2]
#error prediction
if end_prediction <= start_prediction:
skip_count += 1
continue
prediction = examples[i][0][start_prediction:end_prediction]
f1 += calc_f1_score(answers, prediction)
em += calc_em_score(answers, prediction)
f1_score = 100.0 * f1 / total_count
em_score = 100.0 * em / total_count
avg = (f1_score + em_score) * 0.5
print("Avg: {:.4f},F1:{:.4f},EM:{:.4f},Total:{},Skip:{}".format(
avg, f1_score, em_score, total_count, skip_count))
return avg
# Training phase
print("Start training.")
batch_size = args.batch_size
print("Batch size: ", batch_size)
examples = read_examples(args.train_path)
trainset = convert_examples_to_dataset(examples, args)
random.shuffle(trainset)
instances_num = len(trainset)
input_ids = torch.LongTensor([sample[0] for sample in trainset])
mask_ids = torch.LongTensor([sample[1] for sample in trainset])
start_positions = torch.LongTensor([sample[2] for sample in trainset])
end_positions = torch.LongTensor([sample[3] for sample in trainset])
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
print("The number of training instances:", instances_num)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.0
}]
optimizer = BertAdam(optimizer_grouped_parameters,
lr=args.learning_rate,
warmup=args.warmup,
t_total=train_steps)
total_loss = 0.
result = 0.0
best_result = 0.0
for epoch in range(1, args.epochs_num + 1):
model.train()
for i, (input_ids_batch, mask_ids_batch, start_positions_batch,
end_positions_batch) in enumerate(
batch_loader(batch_size, input_ids, mask_ids,
start_positions, end_positions)):
model.zero_grad()
input_ids_batch = input_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
start_positions_batch = start_positions_batch.to(device)
end_positions_batch = end_positions_batch.to(device)
loss, _, _ = model(input_ids_batch, mask_ids_batch,
start_positions_batch, end_positions_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".
format(epoch, i + 1, total_loss / args.report_steps))
total_loss = 0.
loss.backward()
optimizer.step()
result = evaluate(args, False)
if result > best_result:
best_result = result
save_model(model, args.output_model_path)
else:
continue
# Evaluation phase.
if args.test_path is not None:
print("Test set evaluation.")
model = load_model(model, args.output_model_path)
evaluate(args, True)
"Char tokenizer segments sentences into characters."
"Word tokenizer supports online word segmentation based on jieba segmentor."
"Space tokenizer segments sentences into words according to space.")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
# Load Vocabulary
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
model = build_model(args)
# Load pretrained model.
pretrained_model_dict = torch.load(args.pretrained_model_path)
model.load_state_dict(pretrained_model_dict, strict=False)
model = GenerateModel(args, model)
# Build tokenizer.
tokenizer = globals()[args.tokenizer.capitalize() + "Tokenizer"](args)
with open(args.input_path, mode="r", encoding="utf-8") as f:
line = f.readline().strip()
src = [vocab.get(t) for t in tokenizer.tokenize(line.strip())]
seg = [1] * len(src)
start_length = len(src)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default=None,
type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path",
default="./models/tagger_model.bin",
type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path",
default="./models/google_vocab.txt",
type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path",
type=str,
required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path",
type=str,
required=True,
help="Path of the devset.")
parser.add_argument("--test_path",
type=str,
required=True,
help="Path of the testset.")
parser.add_argument("--config_path",
default="./models/google_config.json",
type=str,
help="Path of the config file.")
# Model options
parser.add_argument("--batch_size",
type=int,
default=32,
help="Batch_size.")
parser.add_argument("--seq_length",
default=128,
type=int,
help="Sequence length.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.1, help="Dropout.")
parser.add_argument("--epochs_num",
type=int,
default=3,
help="Number of epochs.")
parser.add_argument("--report_steps",
type=int,
default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
args = parser.parse_args()
# Load the hyperparameters of the config file.
args = load_hyperparam(args)
set_seed(args.seed)
# Find tagging labels.
labels_map = {"NULL": 0, "O": 1} # ID for padding and non-entity.
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
line = line.strip().split()
if len(line) != 2:
continue
if line[1] not in labels_map:
labels_map[line[1]] = len(labels_map)
print("Labels: ", labels_map)
print("Label Num: ", len(labels_map))
args.labels_num = len(labels_map)
# Create the bad pairs
args.bad_pairs = []
args.good_pairs = []
for key1, value1 in labels_map.items():
key1 = key1.strip().split('-')
if len(key1) < 1 or len(key1) > 2:
print("Error label: ", key1)
exit()
for key2, value2 in labels_map.items():
key2 = key2.strip().split('-')
if len(key2) == 1:
continue
if len(key1) == 1 and len(key2) == 2:
if key2[0] == 'I':
args.bad_pairs.append([value1, value2])
continue
# p(B-X -> I-Y) = 0
if key1[1] != key2[1] and key1[0] == 'B' and key2[0] == 'I':
args.bad_pairs.append([value1, value2])
# p(I-X -> I-Y) = 0
if key1[1] != key2[1] and key1[0] == 'I' and key2[0] == 'I':
args.bad_pairs.append([value1, value2])
# p(B-X -> I-X) = 10
if key1[1] == key2[1] and key1[0] == 'B' and key2[0] == 'I':
args.good_pairs.append([value1, value2])
print("Bad pairs: ", args.bad_pairs)
print("Good pairs: ", args.good_pairs)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Some other parameters
args.lstm_hidden = args.hidden_size
args.lstm_layers = 2
args.lstm_dropout = 0.1
if torch.cuda.is_available():
args.use_cuda = True
# Build sequence labeling model.
model = CCKSTagger(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(
torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.module
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
label_ids_batch = label_ids[i * batch_size:(i + 1) * batch_size, :]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
label_ids_batch = label_ids[instances_num // batch_size *
batch_size:, :]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
# Read dataset.
def read_dataset(path):
dataset = []
with open(path, mode="r", encoding="utf-8") as f:
tokens, labels = [], []
for line_id, line in enumerate(f):
if line_id == 0:
continue
line = line.strip().split()
if len(line) != 2:
if len(labels) == 0:
continue
assert len(tokens) == len(labels)
tokens = [vocab.get(t) for t in tokens]
labels = [labels_map[l] for l in labels]
mask = [1] * len(tokens)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
labels = labels[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
labels.append(0)
mask.append(0)
dataset.append([tokens, labels, mask])
tokens, labels = [], []
continue
tokens.append(line[0])
labels.append(line[1])
return dataset
# Evaluation function.
def evaluate(args, is_test):
if is_test:
dataset = read_dataset(args.test_path)
else:
dataset = read_dataset(args.dev_path)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
instances_num = input_ids.size(0)
batch_size = args.batch_size
if is_test:
print("Batch size: ", batch_size)
print("The number of test instances:", instances_num)
correct = 0
gold_entities_num = 0
pred_entities_num = 0
confusion = torch.zeros(len(labels_map),
len(labels_map),
dtype=torch.long)
model.eval()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
# loss, _, pred, gold = model(input_ids_batch, label_ids_batch, mask_ids_batch)
feats = model(input_ids_batch, label_ids_batch, mask_ids_batch)
path_score, best_path = model.crf(feats, mask_ids_batch.byte())
pred = best_path.contiguous().view(-1)
gold = label_ids_batch.contiguous().view(-1)
""" if i == 0:
print('pred', pred)
print('gold', gold) """
# Gold.
for j in range(gold.size()[0]):
if (j > 0 and gold[j - 1].item() <= 1
and gold[j].item() > 1) or (j == 0
and gold[j].item() > 1):
gold_entities_num += 1
# Predict.
for j in range(pred.size()[0]):
if (j > 0 and pred[j - 1].item() <= 1 and pred[j].item() > 1
and gold[j].item() != 0) or (j == 0
and pred[j].item() > 1):
pred_entities_num += 1
pred_entities_pos = []
gold_entities_pos = []
start, end = 0, 0
# Correct.
for j in range(gold.size()[0]):
if (j > 0 and gold[j - 1].item() <= 1
and gold[j].item() > 1) or (j == 0
and gold[j].item() > 1):
start = j
for k in range(j, gold.size()[0]):
if gold[k].item() <= 1:
end = k - 1
break
else:
end = gold.size()[0] - 1
gold_entities_pos.append((start, end))
# Predict.
for j in range(pred.size()[0]):
if (j > 0 and pred[j - 1].item() <= 1
and pred[j].item() > 1) or (j == 0
and pred[j].item() > 1):
start = j
for k in range(j, pred.size()[0]):
if pred[k].item() <= 1:
end = k - 1
break
else:
end = pred.size()[0] - 1
pred_entities_pos.append((start, end))
for entity in pred_entities_pos:
if entity not in gold_entities_pos:
continue
for j in range(entity[0], entity[1] + 1):
if gold[j].item() != pred[j].item():
break
else:
correct += 1
print("Report precision, recall, and f1:")
p = correct / pred_entities_num
r = correct / gold_entities_num
f1 = 2 * p * r / (p + r)
print("{:.3f}, {:.3f}, {:.3f}".format(p, r, f1))
return f1
# Training phase.
print("Start training.")
instances = read_dataset(args.train_path)
input_ids = torch.LongTensor([ins[0] for ins in instances])
label_ids = torch.LongTensor([ins[1] for ins in instances])
mask_ids = torch.LongTensor([ins[2] for ins in instances])
instances_num = input_ids.size(0)
batch_size = args.batch_size
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
print("Batch size: ", batch_size)
print("The number of training instances:", instances_num)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.0
}]
optimizer = BertAdam(optimizer_grouped_parameters,
lr=args.learning_rate,
warmup=args.warmup,
t_total=train_steps)
total_loss = 0.
f1 = 0.0
best_f1 = 0.0
for epoch in range(1, args.epochs_num + 1):
model.train()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids)):
model.zero_grad()
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
""" loss, _, _, _ = model(input_ids_batch, label_ids_batch, mask_ids_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".format(epoch, i+1, total_loss / args.report_steps))
total_loss = 0. """
""" print("mask1:", mask_ids_batch)
print("label1:", label_ids_batch) """
feats = model(input_ids_batch, label_ids_batch, mask_ids_batch)
""" print("feats:", feats) """
loss = model.loss(feats, mask_ids_batch, label_ids_batch)
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Loss: {:.3f}".format(
epoch, i + 1, loss))
loss.backward()
optimizer.step()
f1 = evaluate(args, False)
if f1 > best_f1:
best_f1 = f1
save_model(model, args.output_model_path)
#else:
# break
# Evaluation phase.
print("Start evaluation.")
""" if torch.cuda.device_count() > 1:
model.module.load_state_dict(torch.load(args.output_model_path))
else:
model.load_state_dict(torch.load(args.output_model_path)) """
model.load_state_dict(torch.load(args.output_model_path))
evaluate(args, True)
"""
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default=None,
type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path",
default="./models/classifier_model.bin",
type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path",
default="./models/google_vocab.txt",
type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path",
type=str,
required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path",
type=str,
required=True,
help="Path of the devset.")
parser.add_argument("--test_path",
type=str,
required=True,
help="Path of the testset.")
parser.add_argument("--config_path",
default="./models/google_config.json",
type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size",
type=int,
default=32,
help="Batch size.")
parser.add_argument("--seq_length",
type=int,
default=256,
help="Sequence length.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
parser.add_argument("--pooling",
choices=["mean", "max", "first", "last"],
default="first",
help="Pooling type.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Tokenizer options.
parser.add_argument(
"--tokenizer",
choices=["bert", "char", "word", "space"],
default="bert",
help="Specify the tokenizer."
"Original Google BERT uses bert tokenizer on Chinese corpus."
"Char tokenizer segments sentences into characters."
"Word tokenizer supports online word segmentation based on jieba segmentor."
"Space tokenizer segments sentences into words according to space.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.5, help="Dropout.")
parser.add_argument("--epochs_num",
type=int,
default=5,
help="Number of epochs.")
parser.add_argument("--report_steps",
type=int,
default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
# Evaluation options.
parser.add_argument("--mean_reciprocal_rank",
action="store_true",
help="Evaluation metrics for DBQA dataset.")
# kg
parser.add_argument("--kg_name", required=True, help="KG name or path")
parser.add_argument("--workers_num",
type=int,
default=1,
help="number of process for loading dataset")
parser.add_argument("--no_vm",
action="store_true",
help="Disable the visible_matrix")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
set_seed(args.seed)
# Count the number of labels.
labels_set = set()
columns = {}
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
try:
line = line.strip().split("\t")
if line_id == 0:
for i, column_name in enumerate(line):
columns[column_name] = i
continue
label = int(line[columns["label"]])
labels_set.add(label)
except:
pass
args.labels_num = len(labels_set)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build classification model.
model = BertClassifier(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(
torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vms):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
label_ids_batch = label_ids[i * batch_size:(i + 1) * batch_size]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
pos_ids_batch = pos_ids[i * batch_size:(i + 1) * batch_size, :]
vms_batch = vms[i * batch_size:(i + 1) * batch_size]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
label_ids_batch = label_ids[instances_num // batch_size *
batch_size:]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
pos_ids_batch = pos_ids[instances_num // batch_size *
batch_size:, :]
vms_batch = vms[instances_num // batch_size * batch_size:]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch
# Build knowledge graph.
if args.kg_name == 'none':
spo_files = []
else:
spo_files = [args.kg_name]
kg = KnowledgeGraph(spo_files=spo_files, predicate=True)
def read_dataset(path, workers_num=1):
print("Loading sentences from {}".format(path))
sentences = []
with open(path, mode='r', encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
sentences.append(line)
sentence_num = len(sentences)
print(
"There are {} sentence in total. We use {} processes to inject knowledge into sentences."
.format(sentence_num, workers_num))
if workers_num > 1:
params = []
sentence_per_block = int(sentence_num / workers_num) + 1
for i in range(workers_num):
params.append((i, sentences[i * sentence_per_block:(i + 1) *
sentence_per_block], columns, kg,
vocab, args))
pool = Pool(workers_num)
res = pool.map(add_knowledge_worker, params)
pool.close()
pool.join()
dataset = [sample for block in res for sample in block]
else:
params = (0, sentences, columns, kg, vocab, args)
dataset = add_knowledge_worker(params)
return dataset
# Evaluation function.
def evaluate(args, is_test, metrics='Acc'):
if is_test:
dataset = read_dataset(args.test_path,
workers_num=args.workers_num)
else:
dataset = read_dataset(args.dev_path, workers_num=args.workers_num)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
pos_ids = torch.LongTensor([example[3] for example in dataset])
vms = [example[4] for example in dataset]
batch_size = args.batch_size
instances_num = input_ids.size()[0]
if is_test:
print("The number of evaluation instances: ", instances_num)
correct = 0
# Confusion matrix.
confusion = torch.zeros(args.labels_num,
args.labels_num,
dtype=torch.long)
model.eval()
if not args.mean_reciprocal_rank:
for i, (input_ids_batch, label_ids_batch, mask_ids_batch,
pos_ids_batch, vms_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids, pos_ids, vms)):
# vms_batch = vms_batch.long()
vms_batch = torch.LongTensor(vms_batch)
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
vms_batch = vms_batch.to(device)
with torch.no_grad():
try:
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch, pos_ids_batch,
vms_batch)
except:
print(input_ids_batch)
print(input_ids_batch.size())
print(vms_batch)
print(vms_batch.size())
logits = nn.Softmax(dim=1)(logits)
pred = torch.argmax(logits, dim=1)
gold = label_ids_batch
for j in range(pred.size()[0]):
confusion[pred[j], gold[j]] += 1
correct += torch.sum(pred == gold).item()
if is_test:
print("Confusion matrix:")
print(confusion)
print("Report precision, recall, and f1:")
# for i in range(confusion.size()[0]):
# p = confusion[i,i].item()/confusion[i,:].sum().item()
# r = confusion[i,i].item()/confusion[:,i].sum().item()
# f1 = 2*p*r / (p+r)
# if i == 1:
# label_1_f1 = f1
# print("Label {}: {:.3f}, {:.3f}, {:.3f}".format(i,p,r,f1))
print("Acc. (Correct/Total): {:.4f} ({}/{}) ".format(
correct / len(dataset), correct, len(dataset)))
if metrics == 'Acc':
return correct / len(dataset)
elif metrics == 'f1':
return label_1_f1
else:
return correct / len(dataset)
else:
for i, (input_ids_batch, label_ids_batch, mask_ids_batch,
pos_ids_batch, vms_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids, pos_ids, vms)):
vms_batch = torch.LongTensor(vms_batch)
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
vms_batch = vms_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch, pos_ids_batch,
vms_batch)
logits = nn.Softmax(dim=1)(logits)
if i == 0:
logits_all = logits
if i >= 1:
logits_all = torch.cat((logits_all, logits), 0)
order = -1
gold = []
for i in range(len(dataset)):
qid = dataset[i][-1]
label = dataset[i][1]
if qid == order:
j += 1
if label == 1:
gold.append((qid, j))
else:
order = qid
j = 0
if label == 1:
gold.append((qid, j))
label_order = []
order = -1
for i in range(len(gold)):
if gold[i][0] == order:
templist.append(gold[i][1])
elif gold[i][0] != order:
order = gold[i][0]
if i > 0:
label_order.append(templist)
templist = []
templist.append(gold[i][1])
label_order.append(templist)
order = -1
score_list = []
for i in range(len(logits_all)):
score = float(logits_all[i][1])
qid = int(dataset[i][-1])
if qid == order:
templist.append(score)
else:
order = qid
if i > 0:
score_list.append(templist)
templist = []
templist.append(score)
score_list.append(templist)
rank = []
pred = []
print(len(score_list))
print(len(label_order))
for i in range(len(score_list)):
if len(label_order[i]) == 1:
if label_order[i][0] < len(score_list[i]):
true_score = score_list[i][label_order[i][0]]
score_list[i].sort(reverse=True)
for j in range(len(score_list[i])):
if score_list[i][j] == true_score:
rank.append(1 / (j + 1))
else:
rank.append(0)
else:
true_rank = len(score_list[i])
for k in range(len(label_order[i])):
if label_order[i][k] < len(score_list[i]):
true_score = score_list[i][label_order[i][k]]
temp = sorted(score_list[i], reverse=True)
for j in range(len(temp)):
if temp[j] == true_score:
if j < true_rank:
true_rank = j
if true_rank < len(score_list[i]):
rank.append(1 / (true_rank + 1))
else:
rank.append(0)
MRR = sum(rank) / len(rank)
print("MRR", MRR)
return MRR
# Training phase.
print("Start training.")
trainset = read_dataset(args.train_path, workers_num=args.workers_num)
print("Shuffling dataset")
random.shuffle(trainset)
instances_num = len(trainset)
batch_size = args.batch_size
print("Trans data to tensor.")
print("input_ids")
input_ids = torch.LongTensor([example[0] for example in trainset])
print("label_ids")
label_ids = torch.LongTensor([example[1] for example in trainset])
print("mask_ids")
mask_ids = torch.LongTensor([example[2] for example in trainset])
print("pos_ids")
pos_ids = torch.LongTensor([example[3] for example in trainset])
print("vms")
vms = [example[4] for example in trainset]
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
print("Batch size: ", batch_size)
print("The number of training instances:", instances_num)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [{
'params':
[p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.01
}, {
'params':
[p for n, p in param_optimizer if any(nd in n for nd in no_decay)],
'weight_decay_rate':
0.0
}]
optimizer = BertAdam(optimizer_grouped_parameters,
lr=args.learning_rate,
warmup=args.warmup,
t_total=train_steps)
total_loss = 0.
result = 0.0
best_result = 0.0
for epoch in range(1, args.epochs_num + 1):
model.train()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch,
pos_ids_batch, vms_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids,
pos_ids, vms)):
model.zero_grad()
vms_batch = torch.LongTensor(vms_batch)
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
vms_batch = vms_batch.to(device)
loss, _ = model(input_ids_batch,
label_ids_batch,
mask_ids_batch,
pos=pos_ids_batch,
vm=vms_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
print("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".
format(epoch, i + 1, total_loss / args.report_steps))
sys.stdout.flush()
total_loss = 0.
loss.backward()
optimizer.step()
print("Start evaluation on dev dataset.")
result = evaluate(args, False)
if result > best_result:
best_result = result
save_model(model, args.output_model_path)
else:
continue
print("Start evaluation on test dataset.")
evaluate(args, True)
# Evaluation phase.
print("Final evaluation on the test dataset.")
#model save
if torch.cuda.device_count() > 1:
model.module.load_state_dict(torch.load(args.output_model_path))
else:
model.load_state_dict(torch.load(args.output_model_path))
evaluate(args, True)
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path", default=None, type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_path", default="./models/tagger_model.bin", type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path", default="./models/google_vocab.txt", type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path", type=str, required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path", type=str, required=True,
help="Path of the devset.")
parser.add_argument("--test_path", type=str, required=True,
help="Path of the testset.")
parser.add_argument("--config_path", default="./models/google_config.json", type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size", type=int, default=16,
help="Batch_size.")
parser.add_argument("--seq_length", default=128, type=int,
help="Sequence length.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional", action="store_true", help="Specific to recurrent model.")
# Subword options.
parser.add_argument("--subword_type", choices=["none", "char"], default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path", type=str, default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder", choices=["avg", "lstm", "gru", "cnn"], default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num", type=int, default=2, help="The number of subencoder layers.")
# Optimizer options.
parser.add_argument("--learning_rate", type=float, default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup", type=float, default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.1,
help="Dropout.")
parser.add_argument("--epochs_num", type=int, default=5,
help="Number of epochs.")
parser.add_argument("--report_steps", type=int, default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7,
help="Random seed.")
# kg
parser.add_argument("--kg_name", required=True, help="KG name or path")
parser.add_argument("--log_file",help='记录log信息')
parser.add_argument('--task_name',default=None,type=str)
parser.add_argument("--mode",default='regular',type=str)
parser.add_argument('--run_time',default=None,type=str)
parser.add_argument("--commit_id",default=None,type=str)
parser.add_argument("--fold_nb",default=0,type=str)
parser.add_argument("--tensorboard_dir",default=None)
parser.add_argument("--need_birnn",default=False,type=bool)
parser.add_argument("--rnn_dim",default=128,type=int)
parser.add_argument("--model_name",default='bert',type=str)
parser.add_argument("--pku_model_name",default='default',type=str)
parser.add_argument("--has_token",default=False)
parser.add_argument("--do_train",default=False,type=bool)
parser.add_argument("--do_test",default=True,type=bool)
args = parser.parse_args()
args.run_time = datetime.datetime.today().strftime('%Y-%m-%d_%H-%M-%S')
# Load the hyperparameters of the config file.
args = load_hyperparam(args)
set_seed(args.seed)
s = Save_Log(args)
logger = init_logger(args.log_file)
print(args)
logger.info(args)
os.makedirs(args.output_path,exist_ok=True)
writer = SummaryWriter(logdir=os.path.join(args.tensorboard_dir, "eval",'{}_{}_{}_{}'.format(args.task_name,args.fold_nb,args.run_time,args.commit_id)), comment="Linear")
labels_map = {"[PAD]": 0, "[ENT]": 1}
begin_ids = []
# Find tagging labels
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
labels = line.strip().split("\t")[1].split()
for l in labels:
if l not in labels_map:
if l.startswith("B") or l.startswith("S"):
begin_ids.append(len(labels_map))
labels_map[l] = len(labels_map)
print("Labels: ", labels_map)
logger.info(labels_map)
args.labels_num = len(labels_map)
id2label = {labels_map[key]:key for key in labels_map}
print("id2label:",id2label)
logger.info(id2label)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build knowledge graph.
if args.kg_name == 'none':
spo_files = []
else:
spo_files = [args.kg_name]
kg = KnowledgeGraph(spo_files=spo_files,pku_model_name= args.pku_model_name,predicate=False)
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path), strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build sequence labeling model.
if(args.model_name=='bert'):
# model = BertTagger_with_LSTMCRF(args, model)
model = BertTagger(args, model)
elif(args.model_name == 'bertcrf'):
model = BertTagger_with_LSTMCRF(args, model)
logger.info(model)
# print("model:",model)
# print("model bert Tagger:",model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
args.device = device
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vm_ids, tag_ids):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i*batch_size: (i+1)*batch_size, :]
label_ids_batch = label_ids[i*batch_size: (i+1)*batch_size, :]
mask_ids_batch = mask_ids[i*batch_size: (i+1)*batch_size, :]
pos_ids_batch = pos_ids[i*batch_size: (i+1)*batch_size, :]
vm_ids_batch = vm_ids[i*batch_size: (i+1)*batch_size, :, :]
tag_ids_batch = tag_ids[i*batch_size: (i+1)*batch_size, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch, tag_ids_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num//batch_size*batch_size:, :]
label_ids_batch = label_ids[instances_num//batch_size*batch_size:, :]
mask_ids_batch = mask_ids[instances_num//batch_size*batch_size:, :]
pos_ids_batch = pos_ids[instances_num//batch_size*batch_size:, :]
vm_ids_batch = vm_ids[instances_num//batch_size*batch_size:, :, :]
tag_ids_batch = tag_ids[instances_num//batch_size*batch_size:, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch, tag_ids_batch
# Read dataset.
def read_dataset(path):
dataset = []
with open(path, mode="r", encoding="utf-8") as f:
f.readline()
tokens, labels = [], []
for line_id, line in enumerate(f):
tokens, labels = line.strip().split("\t")
# print("token:",tokens)
# print("label:",labels)
# print("len tokens:",len(tokens.split(' ')),"len labels:",len(labels.split(' ')))
text = ''.join(tokens.split(" "))
# print("len text:",len(text))
tokens, pos, vm, tag = kg.add_knowledge_with_vm([text], add_pad=True, max_length=args.seq_length)
tokens = tokens[0]
# print("len2 text:",len(tokens),"len label:",len(labels))
pos = pos[0]
vm = vm[0].astype("bool")
tag = tag[0]
tokens = [vocab.get(t) for t in tokens]
labels = [labels_map[l] for l in labels.split(" ")]
# print("len3 text:",len(tokens),"len label:",len(labels))
mask = [1] * len(tokens)
# print('tokens:',tokens)
# print("label:",labels)
# assert len(tokens) == len(labels),(len(tokens),len(labels))
new_labels = []
j = 0
for i in range(len(tokens)):
if tag[i] == 0 and tokens[i] != PAD_ID:
new_labels.append(labels[j])
j += 1
elif tag[i] == 1 and tokens[i] != PAD_ID: # 是添加的实体
new_labels.append(labels_map['[ENT]'])
else:
new_labels.append(labels_map[PAD_TOKEN])
dataset.append([tokens, new_labels, mask, pos, vm, tag])
return dataset
# Evaluation function.
def evaluate(args,epoch, is_test):
f1 = 0
if is_test:
dataset = read_dataset(args.test_path)
else:
dataset = read_dataset(args.dev_path)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
pos_ids = torch.LongTensor([sample[3] for sample in dataset])
vm_ids = torch.BoolTensor([sample[4] for sample in dataset])
tag_ids = torch.LongTensor([sample[5] for sample in dataset])
instances_num = input_ids.size(0)
batch_size = args.batch_size
if is_test:
print("Batch size: ", batch_size)
print("The number of test instances:", instances_num)
correct = 0
gold_entities_num = 0
pred_entities_num = 0
by_type_correct = {}
by_type_gold_nb = {}
by_type_pred_nb = {}
confusion = torch.zeros(len(labels_map), len(labels_map), dtype=torch.long)
pred_labels = []
gold_labels = []
origin_tokens = []
model.eval()
for i, (input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch, tag_ids_batch) in enumerate(batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vm_ids, tag_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
tag_ids_batch = tag_ids_batch.to(device)
vm_ids_batch = vm_ids_batch.long().to(device)
# print("batch size:",batch_size)
loss, _, pred, gold = model(input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch)
# print(pred.size(),gold.size())
# print("pred:",pred)
# print("gold:",gold)
"""
pred: tensor([2, 2, 2, ..., 2, 2, 2], device='cuda:0')
gold: tensor([2, 2, 2, ..., 0, 0, 0], device='cuda:0')
"""
# print("input id batch:",input_ids_batch.size())
for input_ids in input_ids_batch:
for id in input_ids:
origin_tokens.append(vocab.i2w[id])
for p,g in zip(pred,gold):
pred_labels.append(id2label[int(p)] )
gold_labels.append(id2label[int(g)])
# pred_labels.append(pred)
# gold_labels.append(gold)
# print("pred label",pred_labels)
# print("gold label:",gold_labels)
for j in range(gold.size()[0]):
if gold[j].item() in begin_ids:
gold_entities_num += 1
if(gold[j].item() not in by_type_gold_nb):
by_type_gold_nb[gold[j].item()] = 1
else:
by_type_gold_nb[gold[j].item()] += 1
for j in range(pred.size()[0]):
if pred[j].item() in begin_ids and gold[j].item() != labels_map["[PAD]"]:
pred_entities_num += 1
if (pred[j].item() not in by_type_pred_nb):
by_type_pred_nb[pred[j].item()] = 1
else:
by_type_pred_nb[pred[j].item()] += 1
pred_entities_pos = []
gold_entities_pos = []
start, end = 0, 0
for j in range(gold.size()[0]):
if gold[j].item() in begin_ids:
start = j
type = gold[j].item()
# print("gold j item:",gold[j].item())
for k in range(j+1, gold.size()[0]):
if gold[k].item() == labels_map['[ENT]']:
continue
if gold[k].item() == labels_map["[PAD]"] or gold[k].item() == labels_map["O"] or gold[k].item() in begin_ids:
end = k - 1
break
else:
end = gold.size()[0] - 1
gold_entities_pos.append((start, end,type))
for j in range(pred.size()[0]):
if pred[j].item() in begin_ids and gold[j].item() != labels_map["[PAD]"] and gold[j].item() != labels_map["[ENT]"]:
start = j
type = pred[j].item()
for k in range(j+1, pred.size()[0]):
if gold[k].item() == labels_map['[ENT]']:
continue
if pred[k].item() == labels_map["[PAD]"] or pred[k].item() == labels_map["O"] or pred[k].item() in begin_ids:
end = k - 1
break
else:
end = pred.size()[0] - 1
pred_entities_pos.append((start, end,type))
for entity in pred_entities_pos:
if entity not in gold_entities_pos:
continue
else:
correct += 1
if(entity[2] not in by_type_correct):
by_type_correct[entity[2]] = 1
else:
by_type_correct[entity[2]] += 1
if(not is_test):
print("Report precision, recall, and f1:")
logger.info("Report precision, recall, and f1:")
p = correct / pred_entities_num
r = correct / gold_entities_num
f1 = 2 * p * r / (p + r)
logger.info("{:.3f}, {:.3f}, {:.3f}".format(p, r, f1))
print("{:.3f}, {:.3f}, {:.3f}".format(p, r, f1))
writer.add_scalar("Eval/precision", p, epoch)
writer.add_scalar("Eval/recall", r, epoch)
writer.add_scalar("Eval/f1_score", f1, epoch)
for type in by_type_correct:
p = by_type_correct[type] / by_type_pred_nb[type]
r = by_type_correct[type] / by_type_gold_nb[type]
f1 = 2 * p * r / (p + r)
print("{}:{:.3f}, {:.3f}, {:.3f}".format(id2label[type][2:], p, r, f1))
logger.info("{}:{:.3f}, {:.3f}, {:.3f}".format(id2label[type][2:], p, r, f1))
writer.add_scalar("Eval/precision_{}".format(id2label[type][2:]), p, epoch)
writer.add_scalar("Eval/recall_{}".format(id2label[type][2:]), r, epoch)
writer.add_scalar("Eval/f1_score_{}".format(id2label[type][2:]), f1, epoch)
with open(os.path.join(args.output_path,'pred_label_test1_{}.txt').format(is_test),'w',encoding='utf-8') as file:
print("!!!!!!!! saving in ",os.path.join(args.output_path,'pred_label_test1_{}.txt'))
i = 0
while i < len(pred_labels):
len_ = args.seq_length
if('[PAD]' in origin_tokens[i:i+args.seq_length]):
len_ = origin_tokens[i:i+args.seq_length].index('[PAD]')
file.write(' '.join(origin_tokens[i:i+len_]))
# print("pred:",pred_labels[i:i+len_])
file.write('\t'+' '.join(pred_labels[i:i+len_]))
file.write('\t'+' '.join(gold_labels[i:i+len_])+'\n')
i += args.seq_length
return f1
# Training phase.
print("args train test:",args.do_train,args.do_test)
if(args.do_train):
print("Start training.")
logger.info("Start training.")
instances = read_dataset(args.train_path)
input_ids = torch.LongTensor([ins[0] for ins in instances])
label_ids = torch.LongTensor([ins[1] for ins in instances])
mask_ids = torch.LongTensor([ins[2] for ins in instances])
pos_ids = torch.LongTensor([ins[3] for ins in instances])
vm_ids = torch.BoolTensor([ins[4] for ins in instances])
tag_ids = torch.LongTensor([ins[5] for ins in instances])
instances_num = input_ids.size(0)
batch_size = args.batch_size
train_steps = int(instances_num * args.epochs_num / batch_size) + 1
logger.info("Batch size: {}".format(batch_size))
print("Batch size: ", batch_size)
print("The number of training instances:", instances_num)
logger.info("The number of training instances:{}".format(instances_num))
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [
{'params': [p for n, p in param_optimizer if not any(nd in n for nd in no_decay)],
'weight_decay_rate': 0.01},
{'params': [p for n, p in param_optimizer if any(nd in n for nd in no_decay)], 'weight_decay_rate': 0.0}
]
optimizer = BertAdam(optimizer_grouped_parameters, lr=args.learning_rate, warmup=args.warmup,
t_total=train_steps)
total_loss = 0.
f1 = 0.0
best_f1 = 0.0
total_step = 0
for epoch in range(1, args.epochs_num + 1):
print("Epoch ", epoch)
model.train()
for i, (
input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch, tag_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vm_ids, tag_ids)):
model.zero_grad()
total_step += 1
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
tag_ids_batch = tag_ids_batch.to(device)
vm_ids_batch = vm_ids_batch.long().to(device)
loss, _, _, _ = model(input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vm_ids_batch)
if torch.cuda.device_count() > 1:
loss = torch.mean(loss)
total_loss += loss.item()
if (i + 1) % args.report_steps == 0:
logger.info("Epoch id: {}, Training steps: {}, Avg loss: {:.3f}".format(epoch, i + 1,
total_loss / args.report_steps))
writer.add_scalar("Train/loss", total_loss / args.report_steps, total_step)
total_loss = 0.
loss.backward()
optimizer.step()
# Evaluation phase.
print("Start evaluate on dev dataset.")
logger.info("Start evaluate on dev dataset.")
f1 = evaluate(args, epoch, False)
# print("Start evaluation on test dataset.")
# evaluate(args, True)
if f1 > best_f1:
best_f1 = f1
save_model(model, os.path.join(args.output_path, '{}.bin').format(args.task_name))
else:
continue
if(args.do_test):
# Evaluation phase.
print("Final evaluation on test dataset.")
logger.info("Final evaluation on test dataset.")
if torch.cuda.device_count() > 1:
model.module.load_state_dict(torch.load(os.path.join(args.output_path, "{}.bin".format(args.task_name))))
else:
model.load_state_dict(torch.load(os.path.join(args.output_path, "{}.bin".format(args.task_name))))
evaluate(args, args.epochs_num, True)
print("============over=================={}".format(args.fold_nb))
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path", default=None, type=str,
help="Path of the pretrained model.")
parser.add_argument("--output_model_path", default="./models/classifier_model.bin", type=str,
help="Path of the output model.")
parser.add_argument("--vocab_path", default="./models/google_vocab.txt", type=str,
help="Path of the vocabulary file.")
parser.add_argument("--train_path", type=str, required=True,
help="Path of the trainset.")
parser.add_argument("--dev_path", type=str, required=True,
help="Path of the devset.")
parser.add_argument("--test_path", type=str, required=True,
help="Path of the testset.")
parser.add_argument("--config_path", default="./models/google_config.json", type=str,
help="Path of the config file.")
# parser.add_argument("--BM25_path", type=str, required=True,
# help="Path of the BM25.")
# parser.add_argument("--BM25Type_path", type=str, required=True,
# help="Path of the BM25Type_path.")
# parser.add_argument("--BM25_test_path", type=str, required=True,
# help="Path of the BM25Test_path.")
# parser.add_argument("--Stopword_path", type=str, required=True,
# help="Path of the Stopword.")
# Model options.
parser.add_argument("--batch_size", type=int, default=32,
help="Batch size.")
parser.add_argument("--seq_length", type=int, default=256,
help="Sequence length.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional", action="store_true", help="Specific to recurrent model.")
parser.add_argument("--pooling", choices=["mean", "max", "first", "last"], default="first",
help="Pooling type.")
# Subword options.
parser.add_argument("--subword_type", choices=["none", "char"], default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path", type=str, default="models/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder", choices=["avg", "lstm", "gru", "cnn"], default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num", type=int, default=2, help="The number of subencoder layers.")
# Tokenizer options.
parser.add_argument("--tokenizer", choices=["bert", "char", "word", "space"], default="bert",
help="Specify the tokenizer."
"Original Google BERT uses bert tokenizer on Chinese corpus."
"Char tokenizer segments sentences into characters."
"Word tokenizer supports online word segmentation based on jieba segmentor."
"Space tokenizer segments sentences into words according to space."
)
# Optimizer options.
parser.add_argument("--learning_rate", type=float, default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup", type=float, default=0.1,
help="Warm up value.")
# Training options.
parser.add_argument("--dropout", type=float, default=0.5,
help="Dropout.")
parser.add_argument("--epochs_num", type=int, default=5,
help="Number of epochs.")
parser.add_argument("--report_steps", type=int, default=100,
help="Specific steps to print prompt.")
parser.add_argument("--seed", type=int, default=7,
help="Random seed.")
# Evaluation options.
parser.add_argument("--mean_reciprocal_rank", action="store_true", help="Evaluation metrics for DBQA dataset.")
# kg
parser.add_argument("--kg_name", required=False, help="KG name or path")
parser.add_argument("--workers_num", type=int, default=1, help="number of process for loading dataset")
parser.add_argument("--no_vm", action="store_true", help="Disable the visible_matrix")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
set_seed(args.seed)
# Count the number of labels.
labels_set = set()
columns = {}
with open(args.train_path, mode="r", encoding="utf-8") as f:
for line_id, line in enumerate(f):
try:
line = line.strip().split("\t")
if line_id == 0:
for i, column_name in enumerate(line):
columns[column_name] = i
continue
label = int(line[columns["label"]])
labels_set.add(label)
except:
pass
args.labels_num = len(labels_set)
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path), strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build classification model.
model = BertClassifier(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(torch.cuda.device_count()))
model = nn.DataParallel(model)
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vms):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i*batch_size: (i+1)*batch_size, :]
label_ids_batch = label_ids[i*batch_size: (i+1)*batch_size]
mask_ids_batch = mask_ids[i*batch_size: (i+1)*batch_size, :]
pos_ids_batch = pos_ids[i*batch_size: (i+1)*batch_size, :]
vms_batch = vms[i*batch_size: (i+1)*batch_size]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num//batch_size*batch_size:, :]
label_ids_batch = label_ids[instances_num//batch_size*batch_size:]
mask_ids_batch = mask_ids[instances_num//batch_size*batch_size:, :]
pos_ids_batch = pos_ids[instances_num//batch_size*batch_size:, :]
vms_batch = vms[instances_num//batch_size*batch_size:]
yield input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch
# Build knowledge graph.
if args.kg_name == 'none':
spo_files = []
else:
spo_files = [args.kg_name]
kg = KnowledgeGraph(spo_files=spo_files, predicate=True)
def read_dataset(path, workers_num=1):
print("Loading sentences from {}".format(path))
sentences = []
with open(path, mode='r', encoding="utf-8") as f:
for line_id, line in enumerate(f):
if line_id == 0:
continue
sentences.append(line)
sentence_num = len(sentences)
print("There are {} sentence in total. We use {} processes to inject knowledge into sentences.".format(sentence_num, workers_num))
if workers_num > 1:
params = []
sentence_per_block = int(sentence_num / workers_num) + 1
for i in range(workers_num):
params.append((i, sentences[i*sentence_per_block: (i+1)*sentence_per_block], columns, kg, vocab, args))
pool = Pool(workers_num)
res = pool.map(add_knowledge_worker, params)
pool.close()
pool.join()
dataset = [sample for block in res for sample in block]
else:
params = (0, sentences, columns, kg, vocab, args)
dataset = add_knowledge_worker(params)
return dataset
# Evaluation function.
def evaluate(args, is_test, metrics='f1'):
if is_test:
dataset = read_dataset(args.test_path, workers_num=args.workers_num)
else:
dataset = read_dataset(args.dev_path, workers_num=args.workers_num)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
pos_ids = torch.LongTensor([example[3] for example in dataset])
vms = [example[4] for example in dataset]
batch_size = args.batch_size
instances_num = input_ids.size()[0]
if is_test:
print("The number of evaluation instances: ", instances_num)
correct = 0
# Confusion matrix.
confusion = torch.zeros(args.labels_num, args.labels_num, dtype=torch.long)
model.eval()
# BM25Rank,train_type_dict=BM25()
# start=0
# end=batch_size
#if not args.mean_reciprocal_rank:
if not args.mean_reciprocal_rank:
print("計算F1")
ls=[]
data=[]
ls_gold=[]
ls_pred=[]
for i, (input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch) in enumerate(batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vms)):
# RankResult=[]
# BatachBM25=BM25Rank[start:end]
# start=start+batch_size
# end=start+batch_size
# vms_batch = vms_batch.long()
vms_batch = torch.LongTensor(vms_batch)
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
vms_batch = vms_batch.to(device)
ls.append(label_ids_batch)
with torch.no_grad():
try:
loss, logits = model(input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch)
except:
print(input_ids_batch)
print(input_ids_batch.size())
print(vms_batch)
print(vms_batch.size())
logits = nn.Softmax(dim=1)(logits)
pred = torch.argmax(logits, dim=1)
gold = label_ids_batch
# for (l,B) in zip(logits,BatachBM25):
# sort_label=torch.sort(l,descending=True)
# sort_dict=dict()
# for (score,label) in zip(sort_label[0],sort_label[1]):
# label=int(label.cpu().numpy())
# score=float(score.cpu().numpy())
# sort_dict[label]=score
# print(sorted(B, key = lambda x : x[1]))
# print(max(sort_dict.values()))
# maximum=max(sort_dict.values())
# keys = [key for key, value in sort_dict.items() if value == maximum]
# print(keys)
# sys.exit()
# ReRank= dict()
# TotalScore=0
# for b in B:
# TotalScore+=b[1]
# for b in B:
# if(sort_dict[train_type_dict[b[0]]]>0.953):
# ReRank[b[0]]=sort_dict[train_type_dict[b[0]]] #b[1]+
# else:b[1]+sort_dict[train_type_dict[b[0]]]((b[1]/949.11)*100)+
# ReRank[b[0]]=sort_dict[train_type_dict[b[0]]]
# maximum = max(ReRank.values())
# keys = [key for key, value in ReRank.items() if value == maximum]
# result=train_type_dict[keys[0]]
# gold = label_ids_batch
# RankResult.append(result)
# pred=torch.Tensor(RankResult).cuda()
print("Pred")
print(pred)
# gold = label_ids_batch
print("Gold")
print(gold)
for (p,g) in zip(pred.cpu().numpy(),gold.cpu().numpy()):
ls_gold.append(g)
ls_pred.append(int(p))
# for j in range(pred.size()[0]):
# confusion[pred[j], gold[j]] += 1
# correct += torch.sum(pred == gold).item()
print(ls_gold)
print(ls_pred)
print("準確率")
print(accuracy_score(ls_gold, ls_pred))
f1 = f1_score(ls_gold,ls_pred, average='macro')
p = precision_score(ls_gold, ls_pred, average='macro')
r = recall_score(ls_gold, ls_pred, average='macro')
print("F1 Score:")
print(f1)
print("Precision:")
print(p)
print("Recall:")
print(r)
else:
print("計算MRR")
rank_pos=[]
for i, (input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch) in enumerate(batch_loader(batch_size, input_ids, label_ids, mask_ids, pos_ids, vms)):
vms_batch = torch.LongTensor(vms_batch)
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
pos_ids_batch = pos_ids_batch.to(device)
vms_batch = vms_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch, mask_ids_batch, pos_ids_batch, vms_batch)
logits = nn.Softmax(dim=1)(logits)
for l,g in zip(logits,label_ids_batch):
sort_label=torch.sort(l,descending=True)
for (idx,p) in enumerate(sort_label[1]):
if(p==g):
rank_pos.append(idx)
MRR=0
for score in rank_pos:
MRR+=1/(score+1)
print("MRR:",MRR/1035)
def BM25_readfile():
#讀取BM25的訓練資料(標準問句斷過詞)
BM25_train_data=[]
with open(args.BM25_path, 'r', encoding='utf-8') as f:
for line in f.readlines():
BM25_train_data.append(line.replace("\r", "").replace("\n", ""))
#讀取stop word
stopWords=[]
with open(args.Stopword_path, 'r', encoding='UTF-8') as file:
for data in file.readlines():
data = data.strip()
stopWords.append(data)
return stopWords,BM25_train_data
def BM25():
stopWords,BM25_train_data=BM25_readfile()
count_l1_sim=0
count_num_l1=0
count_l0_sim=0
count_num_l0=0
correct=0
predict=[]
similarity_ls=[]
for sentence in BM25_train_data[1:]:
S1=sentence.strip().split('\t')[0]
S2=sentence.strip().split('\t')[1]
words1 = [w for w in S1.split() if w not in stopWords]
S1=" ".join(words1)
words2 = [w for w in S2.split() if w not in stopWords]
S2=" ".join(words2)
sim=similarity.ssim(S1,S2,model='bm25')
similarity_ls.append(sim)
if(sim<11):
predict_label=0
predict.append(predict_label)
if(sim>11):
predict_label=1
predict.append(predict_label)
# Evaluation phase.
print("Final evaluation on the test dataset.")
if torch.cuda.device_count() > 1:
model.module.load_state_dict(torch.load(args.output_model_path))
else:
model.load_state_dict(torch.load(args.output_model_path))
accuracy=evaluate(args, True,metrics='Acc')
print("準確率:")
print(accuracy)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# Path options.
parser.add_argument("--pretrained_model_path",
default="model/google_model.bin",
type=str,
help="Path of the pretrained model.")
parser.add_argument("--load_model",
default="pretrained_bert",
type=str,
help="Path of the load model.")
parser.add_argument("--load_model_dir",
default="./model",
type=str,
help="Path of the load model.")
parser.add_argument("--vocab_path",
default="./model/google_vocab.txt",
type=str,
help="Path of the vocabulary file.")
parser.add_argument("--test_path",
type=str,
default="./data/test.tsv",
help="Path of the testset.")
parser.add_argument("--config_path",
default="./model/google_config.json",
type=str,
help="Path of the config file.")
# Model options.
parser.add_argument("--batch_size",
type=int,
default=64,
help="Batch size.")
parser.add_argument("--seq_length",
type=int,
default=256,
help="Sequence length.")
parser.add_argument("--encoder", choices=["bert", "lstm", "gru", \
"cnn", "gatedcnn", "attn", \
"rcnn", "crnn", "gpt", "bilstm"], \
default="bert", help="Encoder type.")
parser.add_argument("--bidirectional",
action="store_true",
help="Specific to recurrent model.")
parser.add_argument("--pooling",
choices=["mean", "max", "first", "last"],
default="first",
help="Pooling type.")
# Subword options.
parser.add_argument("--subword_type",
choices=["none", "char"],
default="none",
help="Subword feature type.")
parser.add_argument("--sub_vocab_path",
type=str,
default="model/sub_vocab.txt",
help="Path of the subword vocabulary file.")
parser.add_argument("--subencoder",
choices=["avg", "lstm", "gru", "cnn"],
default="avg",
help="Subencoder type.")
parser.add_argument("--sub_layers_num",
type=int,
default=2,
help="The number of subencoder layers.")
# Tokenizer options.
parser.add_argument(
"--tokenizer",
choices=["bert", "char", "space"],
default="bert",
help="Specify the tokenizer."
"Original Google BERT uses bert tokenizer on Chinese corpus."
"Char tokenizer segments sentences into characters."
"Word tokenizer supports online word segmentation based on jieba segmentor."
"Space tokenizer segments sentences into words according to space.")
# Optimizer options.
parser.add_argument("--learning_rate",
type=float,
default=2e-5,
help="Learning rate.")
parser.add_argument("--warmup",
type=float,
default=0.1,
help="Warm up value.")
parser.add_argument("--seed", type=int, default=7, help="Random seed.")
# Evaluation options.
parser.add_argument("--mean_reciprocal_rank",
action="store_true",
help="Evaluation metrics for DBQA dataset.")
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
set_seed(args.seed)
args.labels_num = 183
args.load_model_path = "%s/%s.bin" % (args.load_model_dir, args.load_model)
output_dir = "./output/BERT/%s/" % args.load_model
if not os.path.isdir(output_dir):
os.makedirs(output_dir)
args.output_path = output_dir + "test.txt"
# Load vocabulary.
vocab = Vocab()
vocab.load(args.vocab_path)
args.vocab = vocab
# Build bert model.
# A pseudo target is added.
args.target = "bert"
model = build_model(args)
# Load or initialize parameters.
if args.pretrained_model_path is not None:
# Initialize with pretrained model.
model.load_state_dict(torch.load(args.pretrained_model_path),
strict=False)
else:
# Initialize with normal distribution.
for n, p in list(model.named_parameters()):
if 'gamma' not in n and 'beta' not in n:
p.data.normal_(0, 0.02)
# Build classification model.
model = BertClassifier(args, model)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda:1" if torch.cuda.is_available() else "cpu")
checkpoint = torch.load(args.load_model_path, map_location=device)
model.load_state_dict(checkpoint)
model.eval()
model = model.to(device)
# Datset loader.
def batch_loader(batch_size, input_ids, label_ids, mask_ids):
instances_num = input_ids.size()[0]
for i in range(instances_num // batch_size):
input_ids_batch = input_ids[i * batch_size:(i + 1) * batch_size, :]
label_ids_batch = label_ids[i * batch_size:(i + 1) * batch_size]
mask_ids_batch = mask_ids[i * batch_size:(i + 1) * batch_size, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
if instances_num > instances_num // batch_size * batch_size:
input_ids_batch = input_ids[instances_num // batch_size *
batch_size:, :]
label_ids_batch = label_ids[instances_num // batch_size *
batch_size:]
mask_ids_batch = mask_ids[instances_num // batch_size *
batch_size:, :]
yield input_ids_batch, label_ids_batch, mask_ids_batch
# Build tokenizer.
tokenizer = globals()[args.tokenizer.capitalize() + "Tokenizer"](args)
# Read dataset.
def read_dataset_law(path):
dataset = []
with open(path, mode="r", encoding="utf-8") as f:
# lines = f.readlines()
f = csv.reader(f, delimiter='\t')
for line_id, line in enumerate(f):
if line_id == 0:
continue
try:
# line = line.strip().split('\t')
if len(line) == 3:
label = int(line[2])
text = line[1]
tokens = [
vocab.get(t) for t in tokenizer.tokenize(text)
]
tokens = [CLS_ID] + tokens
mask = [1] * len(tokens)
if len(tokens) > args.seq_length:
tokens = tokens[:args.seq_length]
mask = mask[:args.seq_length]
while len(tokens) < args.seq_length:
tokens.append(0)
mask.append(0)
dataset.append((tokens, label, mask))
else:
pass
except:
pass
return dataset
# Evaluation function.
def evaluate(args):
is_test = True
dataset = read_dataset_law(args.test_path)
input_ids = torch.LongTensor([sample[0] for sample in dataset])
label_ids = torch.LongTensor([sample[1] for sample in dataset])
mask_ids = torch.LongTensor([sample[2] for sample in dataset])
batch_size = args.batch_size
instances_num = input_ids.size()[0]
print("The number of evaluation instances: ", instances_num)
correct = 0
# Confusion matrix.
confusion = torch.zeros(args.labels_num,
args.labels_num,
dtype=torch.long)
model.eval()
ouf = open(args.output_path, "w")
if not args.mean_reciprocal_rank:
for i, (input_ids_batch, label_ids_batch,
mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
logits = nn.Softmax(dim=1)(logits)
pred = torch.argmax(logits, dim=1)
gold = label_ids_batch
for j in range(pred.size()[0]):
confusion[pred[j], gold[j]] += 1
ouf.write(
str(pred[j].item()) + "," + str(gold[j].item()) + "\n")
correct += torch.sum(pred == gold).item()
if is_test:
print("Confusion matrix:")
print(confusion)
print("Report precision, recall, and f1:")
for i in range(confusion.size()[0]):
if confusion[i, i].item() == 0:
p, r, f1 = 0.0, 0.0, 0.0
else:
p = confusion[i, i].item() / confusion[i, :].sum().item()
r = confusion[i, i].item() / confusion[:, i].sum().item()
f1 = 2 * p * r / (p + r)
if is_test:
print("Label {}: {:.3f}, {:.3f}, {:.3f}".format(
i, p, r, f1))
print("Acc. (Correct/Total): {:.4f} ({}/{}) ".format(
correct / len(dataset), correct, len(dataset)))
return correct / len(dataset)
else:
for i, (input_ids_batch, label_ids_batch,
mask_ids_batch) in enumerate(
batch_loader(batch_size, input_ids, label_ids,
mask_ids)):
input_ids_batch = input_ids_batch.to(device)
label_ids_batch = label_ids_batch.to(device)
mask_ids_batch = mask_ids_batch.to(device)
with torch.no_grad():
loss, logits = model(input_ids_batch, label_ids_batch,
mask_ids_batch)
logits = nn.Softmax(dim=1)(logits)
if i == 0:
logits_all = logits
if i >= 1:
logits_all = torch.cat((logits_all, logits), 0)
order = -1
gold = []
for i in range(len(dataset)):
qid = dataset[i][3]
label = dataset[i][1]
if qid == order:
j += 1
if label == 1:
gold.append((qid, j))
else:
order = qid
j = 0
if label == 1:
gold.append((qid, j))
label_order = []
order = -1
for i in range(len(gold)):
if gold[i][0] == order:
templist.append(gold[i][1])
elif gold[i][0] != order:
order = gold[i][0]
if i > 0:
label_order.append(templist)
templist = []
templist.append(gold[i][1])
label_order.append(templist)
order = -1
score_list = []
for i in range(len(logits_all)):
score = float(logits_all[i][1])
qid = int(dataset[i][3])
if qid == order:
templist.append(score)
else:
order = qid
if i > 0:
score_list.append(templist)
templist = []
templist.append(score)
score_list.append(templist)
rank = []
pred = []
for i in range(len(score_list)):
if len(label_order[i]) == 1:
if label_order[i][0] < len(score_list[i]):
true_score = score_list[i][label_order[i][0]]
score_list[i].sort(reverse=True)
for j in range(len(score_list[i])):
if score_list[i][j] == true_score:
rank.append(1 / (j + 1))
else:
rank.append(0)
else:
true_rank = len(score_list[i])
for k in range(len(label_order[i])):
if label_order[i][k] < len(score_list[i]):
true_score = score_list[i][label_order[i][k]]
temp = sorted(score_list[i], reverse=True)
for j in range(len(temp)):
if temp[j] == true_score:
if j < true_rank:
true_rank = j
if true_rank < len(score_list[i]):
rank.append(1 / (true_rank + 1))
else:
rank.append(0)
MRR = sum(rank) / len(rank)
print(MRR)
return MRR
evaluate(args)
