def eval_(output_dir, t_labels, p_labels, text):
with open(os.path.join(output_dir, t_labels), 'r') as t, \
open(os.path.join(output_dir, p_labels), 'r') as p, \
open(os.path.join(output_dir, text), 'r') as textf:
ne_class_list = set()
true_labels_for_testing = []
results_of_prediction = []
for text, true_labels, predicted_labels in zip(textf, t, p):
true_labels = true_labels.strip().replace('_', '-').split()
predicted_labels = predicted_labels.strip().replace('_',
'-').split()
biluo_tags_true = get_biluo(true_labels)
biluo_tags_predicted = get_biluo(predicted_labels)
doc = Doc(text.strip())
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(
doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_for_testing.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
results_of_prediction.append(ent_labels)
from eval.quality import calculate_prediction_quality
print(ne_class_list)
f1, precision, recall, results = \
calculate_prediction_quality(true_labels_for_testing,
results_of_prediction,
tuple(ne_class_list))
print(f1, precision, recall, results)
def add_knowledge_with_vm(self, args, sent_batch, label_batch):
"""
input: sent_batch - list of sentences, e.g., ["abcd", "efgh"]
return: know_sent_batch - list of sentences with entites embedding
position_batch - list of position index of each character.
visible_matrix_batch - list of visible matrixs
seg_batch - list of segment tags
"""
text_ = sent_batch[0]
label_ = label_batch[0]
tag_labels_true = label_.strip().replace('_', '-').split()
biluo_tags_true = get_biluo(tag_labels_true)
doc = Doc(text_)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
chunk_start = 0
chunks = []
# Convert text into chunks
for start, end, _ in offset_true_labels:
chunk_text = text_[chunk_start: start].strip()
chunk_entity = text_[start: end].strip()
chunk_start = end
if chunk_text:
chunks.append(chunk_text)
if chunk_entity:
chunks.append(chunk_entity)
# Append the last chunk if not empty
last_chunk = text_[chunk_start:].strip()
if last_chunk:
chunks.append(last_chunk)
chunks = [chunks]
know_sent_batch = []
position_batch = []
visible_matrix_batch = []
seg_batch = []
for split_sent in chunks:
# create tree
sent_tree = []
pos_idx_tree = []
abs_idx_tree = []
pos_idx = -1
abs_idx = -1
abs_idx_src = []
# print(split_sent)
num_chunks = len(split_sent)
for idx, token_original in enumerate(split_sent):
know_entities = []
if args.use_kg:
all_entities = list(self.lookup_table.get(token_original.lower(), []))
# Select entities from least frequent
if args.reverse_order:
all_entities_len = len(all_entities)
start_index = all_entities_len - args.max_entities
know_entities = all_entities[start_index: None]
else:
# Select entities from frequent features
know_entities = all_entities[:args.max_entities]
know_entities = [ent.replace('_', ' ') for ent in know_entities]
# print(entities, token_original)
# Tokenize the data
cur_tokens = []
for tok in token_original.split():
cur_tokens.extend(self.tokenize_word(tok))
if idx == 0:
cls_token = self.tokenizer.cls_token
cur_tokens = [cls_token] + cur_tokens
token_original = cls_token + ' ' + token_original
if idx == num_chunks - 1:
sep_token = self.tokenizer.sep_token
cur_tokens = cur_tokens + [sep_token]
token_original = token_original + ' ' + sep_token
entities = []
for ent in know_entities:
entity = []
# Check if ent is not empty
if ent:
for word in ent.split():
entity.extend(self.tokenize_word(word))
entities.append(entity)
sent_tree.append((token_original, cur_tokens, entities))
if token_original in self.special_tags:
token_pos_idx = [pos_idx+1]
token_abs_idx = [abs_idx+1]
else:
token_pos_idx = [pos_idx+i for i in range(1, len(cur_tokens)+1)]
token_abs_idx = [abs_idx+i for i in range(1, len(cur_tokens)+1)]
# print(token_abs_idx)
abs_idx = token_abs_idx[-1]
entities_pos_idx = []
entities_abs_idx = []
for ent in entities:
try:
ent_pos_idx = [token_pos_idx[-1] + i for i in range(1, len(ent)+1)]
entities_pos_idx.append(ent_pos_idx)
ent_abs_idx = [abs_idx + i for i in range(1, len(ent)+1)]
abs_idx = ent_abs_idx[-1]
entities_abs_idx.append(ent_abs_idx)
except IndexError:
print(entities)
exit()
# print(f'token_abs_idx:{token_abs_idx}')
# print(f'token_pos_idx:{token_pos_idx}')
# print(f'entities_abs_idx:{entities_abs_idx}')
# print(f'entities_pos_idx:{entities_pos_idx}')
pos_idx_tree.append((token_pos_idx, entities_pos_idx))
pos_idx = token_pos_idx[-1]
abs_idx_tree.append((token_abs_idx, entities_abs_idx))
abs_idx_src += token_abs_idx
# Get know_sent and pos
# print(abs_idx_tree)
# print(pos_idx_tree)
# print(sent_tree)
# exit()
know_sent = []
pos = []
seg = []
for i in range(len(sent_tree)):
token_original = sent_tree[i][0]
word = sent_tree[i][1]
for tok in token_original.split():
if tok in self.special_tags:
seg += [0]
else:
cur_toks = self.tokenize_word(tok)
num_subwords = len(cur_toks)
seg += [0]
# Add extra tags for the added subtokens
if num_subwords > 1:
seg += [2] * (num_subwords - 1)
# Append the subwords in know_sent
know_sent += word
pos += pos_idx_tree[i][0]
for j in range(len(sent_tree[i][2])):
add_word = sent_tree[i][2][j]
know_sent += add_word
seg += [1] * len(add_word)
pos += list(pos_idx_tree[i][1][j])
token_num = len(know_sent)
# Calculate visible matrix
visible_matrix = np.zeros((token_num, token_num))
for item in abs_idx_tree:
src_ids = item[0]
for id in src_ids:
visible_abs_idx = abs_idx_src + [idx for ent in item[1] for idx in ent]
visible_matrix[id, visible_abs_idx] = 1
for ent in item[1]:
for id in ent:
visible_abs_idx = ent + src_ids
visible_matrix[id, visible_abs_idx] = 1
# print(know_sent)
# print(seg)
# print(pos)
# print(visible_matrix)
# exit()
src_length = len(know_sent)
if args.padding:
if len(know_sent) < args.seq_length:
pad_num = args.seq_length - src_length
know_sent += [self.tokenizer.pad_token] * pad_num
seg += [3] * pad_num
pos += [args.seq_length - 1] * pad_num
visible_matrix = np.pad(visible_matrix, ((0, pad_num), (0, pad_num)), 'constant') # pad 0
else:
know_sent = know_sent[:args.seq_length]
seg = seg[:args.seq_length]
pos = pos[:args.seq_length]
visible_matrix = visible_matrix[:args.seq_length, :args.seq_length]
if args.truncate and src_length > args.seq_length:
know_sent = know_sent[:args.seq_length]
seg = seg[:args.seq_length]
pos = pos[:args.seq_length]
visible_matrix = visible_matrix[:args.seq_length, :args.seq_length]
# print(know_sent)
# print(seg)
# print(pos)
# print(visible_matrix)
# exit()
know_sent_batch.append(know_sent)
position_batch.append(pos)
visible_matrix_batch.append(visible_matrix)
seg_batch.append(seg)
return know_sent_batch, position_batch, visible_matrix_batch, seg_batch
ignored = 0
tag_features = {}
new_texts = []
updated_labels = []
for index, row in data_df.iterrows():
text_ = row.text
words = text_.split()
doc = Doc(text_)
labels = row.labels
tag_labels_true = labels.strip().replace('_', '-').split()
if len(words) != len(tag_labels_true):
ignored += 1
# print(index, row.text)
continue
biluo_tags_true = get_biluo(tag_labels_true)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
# if index == 49:
# print(text_)
# print(tag_labels_true)
# print(offset_true_labels)
new_labels = labels.split()
chunk_start = 0
chunks = []
# Convert text into chunks
for start, end, _ in offset_true_labels:
chunk_text = text_[chunk_start:start].strip()
chunk_entity = text_[start:end].strip()
chunk_start = end
if chunk_text:
def train(args):
vocab_path = os.path.join(args.data_dir, args.vocab)
tag_path = os.path.join(args.data_dir, args.tag_set)
word_to_idx, idx_to_word, tag_to_idx, idx_to_tag = load_vocabs(vocab_path, tag_path)
train_sentences, train_labels, test_sentences, test_labels = prepare_text(args, tag_to_idx)
device = get_device(args)
start = time.time()
bert_embedding1 = TransformerWordEmbeddings('distilbert-base-multilingual-cased',
layers='-1',
batch_size=args.batch_size,
pooling_operation=args.pooling_operation,
)
bert_embedding2 = TransformerWordEmbeddings('distilroberta-base',
layers='-1',
batch_size=args.batch_size,
pooling_operation=args.pooling_operation,
)
bert_embedding3 = TransformerWordEmbeddings('sentence-transformers/xlm-r-100langs-bert-base-nli-stsb-mean-tokens',
layers='-1',
batch_size=args.batch_size,
pooling_operation=args.pooling_operation
)
encoder = StackTransformerEmbeddings([bert_embedding1, bert_embedding2, bert_embedding3])
train_sentences_encoded = encoder.encode(train_sentences)
test_sentences_encoded = encoder.encode(test_sentences)
print(f'Encoding time:{time.time() - start}')
# Update the Namespace
args.vocab_size = len(idx_to_word)
args.number_of_tags = len(idx_to_tag)
# Update the embedding dim
args.embedding_dim = encoder.embedding_length
model = build_model(args, device)
print(model)
model = model.to(device)
# optimizer = torch.optim.Adam(model.parameters())
betas = (0.9, 0.999)
eps = 1e-8
optimizer = BertAdam(model, lr=args.learning_rate, b1=betas[0], b2=betas[1], e=eps)
pad_id = word_to_idx['PAD']
pad_id_labels = tag_to_idx['PAD']
batcher = SamplingBatcherStackedTransformers(np.asarray(train_sentences_encoded, dtype=object),
np.asarray(train_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id,
pad_id_labels=pad_id_labels,
embedding_length=encoder.embedding_length,
device=device)
updates = 1
total_loss = 0
best_loss = +inf
stop_training = False
output_dir = args.output_dir
try:
os.makedirs(output_dir)
except:
pass
prefix = args.train_text.split('_')[0] if len(args.train_text.split('_')) > 1 \
else args.train_text.split('.')[0]
start_time = time.time()
for epoch in range(args.epochs):
for batch in batcher:
updates += 1
input_, labels, labels_mask = batch
optimizer.zero_grad()
loss = model.score(batch)
loss.backward()
optimizer.step()
total_loss += loss.data
if updates % args.patience == 0:
print(f'Epoch: {epoch}, Updates:{updates}, Loss: {total_loss}')
if best_loss > total_loss:
save_state(f'{output_dir}/{prefix}_best_model.pt', model, loss_fn, optimizer,
updates, args=args)
best_loss = total_loss
total_loss = 0
if updates % args.max_steps == 0:
stop_training = True
break
if stop_training:
break
print('Training time:{}'.format(time.time() - start_time))
def get_idx_to_tag(label_ids):
return [idx_to_tag.get(idx) for idx in label_ids]
def get_idx_to_word(words_ids):
return [idx_to_word.get(idx) for idx in words_ids]
model, model_args = load_model_state(f'{output_dir}/{prefix}_best_model.pt', device)
model = model.to(device)
batcher_test = SamplingBatcherStackedTransformers(np.asarray(test_sentences_encoded, dtype=object),
np.asarray(test_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id,
pad_id_labels=pad_id_labels,
embedding_length=encoder.embedding_length,
device=device)
ne_class_list = set()
true_labels_for_testing = []
results_of_prediction = []
with open(f'{output_dir}/{prefix}_label.txt', 'w', encoding='utf8') as t, \
open(f'{output_dir}/{prefix}_predict.txt', 'w', encoding='utf8') as p, \
open(f'{output_dir}/{prefix}_text.txt', 'w', encoding='utf8') as textf:
with torch.no_grad():
# predict() method returns final labels not the label_ids
preds = predict_no_attn(batcher_test, model, idx_to_tag)
cnt = 0
for text, labels, predict_labels in zip(test_sentences, test_labels, preds):
cnt += 1
tag_labels_true = get_idx_to_tag(labels)
text_ = text
tag_labels_predicted = ' '.join(predict_labels)
tag_labels_true = ' '.join(tag_labels_true)
p.write(tag_labels_predicted + '\n')
t.write(tag_labels_true + '\n')
textf.write(text_ + '\n')
tag_labels_true = tag_labels_true.strip().replace('_', '-').split()
tag_labels_predicted = tag_labels_predicted.strip().replace('_', '-').split()
biluo_tags_true = get_biluo(tag_labels_true)
biluo_tags_predicted = get_biluo(tag_labels_predicted)
doc = Doc(text_)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_for_testing.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
results_of_prediction.append(ent_labels)
from eval.quality import calculate_prediction_quality
f1, precision, recall, results = \
calculate_prediction_quality(true_labels_for_testing,
results_of_prediction,
tuple(ne_class_list))
print(f1, precision, recall, results)
def train(args):
idx_to_word, idx_to_tag, train_sentences, train_labels, test_sentences, test_labels = prepare(
args)
word_to_idx = {idx_to_word[key]: key for key in idx_to_word}
tag_to_idx = {idx_to_tag[key]: key for key in idx_to_tag}
args.vocab_size = len(idx_to_word)
args.number_of_tags = len(idx_to_tag)
use_cuda = torch.cuda.is_available()
device = torch.device("cuda:0" if use_cuda and not args.cpu else "cpu")
model = build_model(args)
print(model)
model = model.to(device)
# optimizer = torch.optim.Adam(model.parameters())
betas = (0.9, 0.999)
eps = 1e-8
optimizer = BertAdam(model,
lr=args.learning_rate,
b1=betas[0],
b2=betas[1],
e=eps)
pad_id = word_to_idx['PAD']
batcher = SamplingBatcher(np.asarray(train_sentences, dtype=object),
np.asarray(train_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id)
updates = 1
total_loss = 0
best_loss = +inf
stop_training = False
output_dir = args.output_dir
try:
os.makedirs(output_dir)
except:
pass
prefix = args.train_text.split('_')[0] if len(args.train_text.split('_')) > 1 \
else args.train_text.split('.')[0]
start_time = time.time()
for epoch in range(args.epochs):
for batch in batcher:
updates += 1
batch_data, batch_labels, batch_len, mask_x, mask_y = batch
optimizer.zero_grad()
batch_data = batch_data.to(device)
batch_labels = batch_labels.to(device)
mask_y = mask_y.to(device)
attn_mask = get_attn_pad_mask(batch_data, batch_data, pad_id)
output_batch = model(batch_data, attn_mask)
loss = loss_fn(output_batch, batch_labels, mask_y)
loss.backward()
optimizer.step()
total_loss += loss.data
if updates % args.patience == 0:
print(f'Epoch: {epoch}, Updates:{updates}, Loss: {total_loss}')
if best_loss > total_loss:
save_state(f'{output_dir}/{prefix}_best_model.pt', model,
loss_fn, optimizer, updates)
best_loss = total_loss
total_loss = 0
if updates % args.max_steps == 0:
stop_training = True
break
if stop_training:
break
print('Training time:{}'.format(time.time() - start_time))
def get_idx_to_tag(label_ids):
return [idx_to_tag.get(idx) for idx in label_ids]
def get_idx_to_word(words_ids):
return [idx_to_word.get(idx) for idx in words_ids]
updates = load_model_state(f'{output_dir}/{prefix}_best_model.pt', model)
ne_class_list = set()
true_labels_for_testing = []
results_of_prediction = []
with open(f'{output_dir}/{prefix}_label.txt', 'w', encoding='utf8') as t, \
open(f'{output_dir}/{prefix}_predict.txt', 'w', encoding='utf8') as p, \
open(f'{output_dir}/{prefix}_text.txt', 'w', encoding='utf8') as textf:
with torch.no_grad():
model.eval()
cnt = 0
for text, label in zip(test_sentences, test_labels):
cnt += 1
text_tensor = torch.LongTensor(text).unsqueeze(0).to(device)
labels = torch.LongTensor(label).unsqueeze(0).to(device)
predict = model(text_tensor)
predict_labels = predict.argmax(dim=1)
predict_labels = predict_labels.view(-1)
labels = labels.view(-1)
predicted_labels = predict_labels.cpu().data.tolist()
true_labels = labels.cpu().data.tolist()
tag_labels_predicted = get_idx_to_tag(predicted_labels)
tag_labels_true = get_idx_to_tag(true_labels)
text_ = get_idx_to_word(text)
tag_labels_predicted = ' '.join(tag_labels_predicted)
tag_labels_true = ' '.join(tag_labels_true)
text_ = ' '.join(text_)
p.write(tag_labels_predicted + '\n')
t.write(tag_labels_true + '\n')
textf.write(text_ + '\n')
tag_labels_true = tag_labels_true.strip().replace('_',
'-').split()
tag_labels_predicted = tag_labels_predicted.strip().replace(
'_', '-').split()
biluo_tags_true = get_biluo(tag_labels_true)
biluo_tags_predicted = get_biluo(tag_labels_predicted)
doc = Doc(text_)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(
doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_for_testing.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
results_of_prediction.append(ent_labels)
from eval.quality import calculate_prediction_quality
f1, precision, recall, results = \
calculate_prediction_quality(true_labels_for_testing,
results_of_prediction,
tuple(ne_class_list))
print(f1, precision, recall, results)
def decode(options):
prefix = options.test_text.split('_')[0] if len(options.test_text.split('_')) > 1 \
else options.test_text.split('.')[0]
device = get_device(args)
output_dir = options.output_dir
try:
os.makedirs(output_dir)
except:
pass
model, model_args = load_model_state(options.model, device)
model = model.to(device)
vocab_path = os.path.join(model_args.data_dir, model_args.vocab)
tag_path = os.path.join(model_args.data_dir, model_args.tag_set)
word_to_idx, idx_to_word, tag_to_idx, idx_to_tag = load_vocabs(
vocab_path, tag_path)
*_, test_sentences, test_labels = prepare(options, word_to_idx, tag_to_idx)
def get_idx_to_tag(label_ids):
return [idx_to_tag.get(idx) for idx in label_ids]
def get_idx_to_word(words_ids):
return [idx_to_word.get(idx) for idx in words_ids]
pad_id = word_to_idx['PAD']
pad_id_labels = tag_to_idx['PAD']
batcher_test = SamplingBatcher(np.asarray(test_sentences, dtype=object),
np.asarray(test_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id,
pad_id_labels=pad_id_labels)
ne_class_list = set()
true_labels_for_testing = []
results_of_prediction = []
with open(f'{output_dir}/{prefix}_label.txt', 'w', encoding='utf8') as t, \
open(f'{output_dir}/{prefix}_predict.txt', 'w', encoding='utf8') as p, \
open(f'{output_dir}/{prefix}_text.txt', 'w', encoding='utf8') as textf:
with torch.no_grad():
preds = predict(batcher_test, model, idx_to_tag, pad_id=pad_id)
cnt = 0
for text, labels, predict_labels in zip(test_sentences,
test_labels, preds):
cnt += 1
tag_labels_true = get_idx_to_tag(labels)
text_ = get_idx_to_word(text)
tag_labels_predicted = ' '.join(predict_labels)
tag_labels_true = ' '.join(tag_labels_true)
text_ = ' '.join(text_)
p.write(tag_labels_predicted + '\n')
t.write(tag_labels_true + '\n')
textf.write(text_ + '\n')
tag_labels_true = tag_labels_true.strip().replace('_',
'-').split()
tag_labels_predicted = tag_labels_predicted.strip().replace(
'_', '-').split()
biluo_tags_true = get_biluo(tag_labels_true)
biluo_tags_predicted = get_biluo(tag_labels_predicted)
doc = Doc(text_)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(
doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_for_testing.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
results_of_prediction.append(ent_labels)
from eval.quality import calculate_prediction_quality
f1, precision, recall, results = \
calculate_prediction_quality(true_labels_for_testing,
results_of_prediction,
tuple(ne_class_list))
print(f1, precision, recall, results)
else:
labels_predict_all.append(labels_predict)
labels_true_all.append(labels_true)
true_labels_final = []
predicted_labels_final = []
ne_class_list = set()
for line_id, line in enumerate(zip(text_all, labels_true_all, labels_predict_all)):
text, true_labels, pred_labels = line
pred_labels = [p.replace('_', '-') for p in pred_labels]
true_labels = [t.replace('_', '-') for t in true_labels]
biluo_tags_true = get_biluo(true_labels)
biluo_tags_predicted = get_biluo(pred_labels)
doc = Doc(text.strip())
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_final.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
def train(args):
vocab_path = os.path.join(args.data_dir, args.vocab)
tag_path = os.path.join(args.data_dir, args.tag_set)
word_to_idx, idx_to_word, tag_to_idx, idx_to_tag = load_vocabs(
vocab_path, tag_path)
train_sentences, train_labels, test_sentences, test_labels = prepare_flair(
args, tag_to_idx)
device = get_device(args)
flair.device = device
start = time.time()
# flair_forward_embedding = FlairEmbeddings('multi-forward')
# flair_backward_embedding = FlairEmbeddings('multi-backward')
# init multilingual BERT
bert_embedding = TransformerWordEmbeddings(
'distilbert-base-multilingual-cased',
layers='-1',
batch_size=args.batch_size)
# bert_embedding1 = TransformerWordEmbeddings('sentence-transformers/'
# 'distilbert-multilingual-nli-stsb-quora-ranking',
# layers='-1',
# batch_size=args.batch_size)
# bert_embedding2 = TransformerWordEmbeddings('sentence-transformers/quora-distilbert-multilingual',
# layers='-1',
# batch_size=args.batch_size)
# now create the StackedEmbedding object that combines all embeddings
embeddings = StackedEmbeddings(embeddings=[bert_embedding])
# Embed words in the train and test sentence
start_idx = 0
n_samples = len(train_sentences)
while start_idx < n_samples + args.batch_size:
batch_slice = train_sentences[
start_idx:min(start_idx + args.batch_size, n_samples)]
start_idx += args.batch_size
embeddings.embed(batch_slice)
start_idx = 0
n_samples = len(test_sentences)
while start_idx <= n_samples + args.batch_size:
batch_slice = test_sentences[start_idx:min(start_idx +
args.batch_size, n_samples)]
start_idx += args.batch_size
embeddings.embed(batch_slice)
print(f'Encoding time:{time.time() - start}')
# Update the Namespace
args.vocab_size = len(idx_to_word)
args.number_of_tags = len(idx_to_tag)
model = build_model(args, device)
print(model)
model = model.to(device)
optimizer = torch.optim.Adam(model.parameters())
pad_id = word_to_idx['PAD']
pad_id_labels = tag_to_idx['PAD']
batcher = SamplingBatcherFlair(
np.asarray(train_sentences, dtype=object),
np.asarray(train_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id,
pad_id_labels=pad_id_labels,
embedding_length=embeddings.embedding_length)
updates = 1
total_loss = 0
best_loss = +inf
stop_training = False
output_dir = args.output_dir
try:
os.makedirs(output_dir)
except:
pass
prefix = args.train_text.split('_')[0] if len(args.train_text.split('_')) > 1 \
else args.train_text.split('.')[0]
start_time = time.time()
for epoch in range(args.epochs):
for batch in batcher:
updates += 1
input_, labels, labels_mask = batch
optimizer.zero_grad()
loss = model.score(batch)
loss.backward()
optimizer.step()
total_loss += loss.data
if updates % args.patience == 0:
print(f'Epoch: {epoch}, Updates:{updates}, Loss: {total_loss}')
if best_loss > total_loss:
save_state(f'{output_dir}/{prefix}_best_model.pt',
model,
loss_fn,
optimizer,
updates,
args=args)
best_loss = total_loss
total_loss = 0
if updates % args.max_steps == 0:
stop_training = True
break
if stop_training:
break
print('Training time:{}'.format(time.time() - start_time))
def get_idx_to_tag(label_ids):
return [idx_to_tag.get(idx) for idx in label_ids]
def get_idx_to_word(words_ids):
return [idx_to_word.get(idx) for idx in words_ids]
model, model_args = load_model_state(
f'{output_dir}/{prefix}_best_model.pt', device)
model = model.to(device)
batcher_test = SamplingBatcherFlair(
np.asarray(test_sentences, dtype=object),
np.asarray(test_labels, dtype=object),
batch_size=args.batch_size,
pad_id=pad_id,
pad_id_labels=pad_id_labels,
embedding_length=embeddings.embedding_length)
ne_class_list = set()
true_labels_for_testing = []
results_of_prediction = []
with open(f'{output_dir}/{prefix}_label.txt', 'w', encoding='utf8') as t, \
open(f'{output_dir}/{prefix}_predict.txt', 'w', encoding='utf8') as p, \
open(f'{output_dir}/{prefix}_text.txt', 'w', encoding='utf8') as textf:
with torch.no_grad():
# predict() method returns final labels not the label_ids
preds = predict_no_attn(batcher_test, model, idx_to_tag)
cnt = 0
for text, labels, predict_labels in zip(test_sentences,
test_labels, preds):
cnt += 1
tag_labels_true = get_idx_to_tag(labels)
text_ = text.to_original_text()
tag_labels_predicted = ' '.join(predict_labels)
tag_labels_true = ' '.join(tag_labels_true)
p.write(tag_labels_predicted + '\n')
t.write(tag_labels_true + '\n')
textf.write(text_ + '\n')
tag_labels_true = tag_labels_true.strip().replace('_',
'-').split()
tag_labels_predicted = tag_labels_predicted.strip().replace(
'_', '-').split()
biluo_tags_true = get_biluo(tag_labels_true)
biluo_tags_predicted = get_biluo(tag_labels_predicted)
doc = Doc(text_)
offset_true_labels = offset_from_biluo(doc, biluo_tags_true)
offset_predicted_labels = offset_from_biluo(
doc, biluo_tags_predicted)
ent_labels = dict()
for ent in offset_true_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
ne_class_list.add(ent_type)
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
true_labels_for_testing.append(ent_labels)
ent_labels = dict()
for ent in offset_predicted_labels:
start, stop, ent_type = ent
ent_type = ent_type.replace('_', '')
if ent_type in ent_labels:
ent_labels[ent_type].append((start, stop))
else:
ent_labels[ent_type] = [(start, stop)]
results_of_prediction.append(ent_labels)
from eval.quality import calculate_prediction_quality
f1, precision, recall, results = \
calculate_prediction_quality(true_labels_for_testing,
results_of_prediction,
tuple(ne_class_list))
print(f1, precision, recall, results)