def process_data(train_file, dev_file, test_file):
chars = set()
train_datas = read_data(train_file)
dev_datas = read_data(dev_file)
test_datas = read_data(test_file)
for text1, text2, label in train_datas + dev_datas:
chars.update(set(text1))
chars.update(set(text2))
_token_dict = load_vocab(dict_path) # 读取词典
token_dict, keep_words = {}, []
for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
token_dict[c] = len(token_dict)
keep_words.append(_token_dict[c])
for c in chars:
if c in _token_dict:
token_dict[c] = len(token_dict)
keep_words.append(_token_dict[c])
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
return train_datas, dev_datas, test_datas, tokenizer, keep_words
def albert_process_data(self, mode='part'):
_token_dict = load_vocab(self.albert_dict_path) # 读取字典
# 只取涉及数据集中出现的字
if mode == 'part':
train_df = pd.read_csv(self.train_data_path,
names=['seq1', 'seq2', 'label'])
valid_df = pd.read_csv(self.dev_data_path,
names=['seq1', 'seq2', 'label'])
test_df = pd.read_csv(self.test_data_path,
names=['seq1', 'seq2', 'label'])
# total data
tmp_df = pd.concat([train_df, valid_df, test_df])
chars = defaultdict(int)
for _, tmp_row in tmp_df.iterrows():
for tmp_char in tmp_row.seq1:
chars[tmp_char] += 1
for tmp_char in tmp_row.seq2:
chars[tmp_char] += 1
# 过滤低频字
chars = {i: j for i, j in chars.items() if j >= 4}
self.token_dict, self.keep_words = {}, [] # keep_words是在bert中保留的字表
# 保留特殊字符
for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
self.token_dict[c] = len(self.token_dict)
self.keep_words.append(_token_dict[c])
# 字典只保留数据中出现的高频字
for c in chars:
if c in _token_dict:
self.token_dict[c] = len(self.token_dict)
self.keep_words.append(_token_dict[c])
elif mode == 'full':
self.token_dict, self.keep_words = _token_dict, []
for k in self.token_dict:
self.keep_words.append(self.token_dict[k])
self.tokenizer = SimpleTokenizer(self.token_dict) # 建立分词器
def save_vocab(self, input_data, incremental_train=False):
relationships = set()
chars = set()
for (text, triple), (entity_lists, rel) in input_data:
chars.update(set(text))
relationships.add(rel)
relationships.update(set(p for s, p, o in triple))
token_dict = load_vocab(dict_path) # 读取词典
keep_words = list(set(token_dict.values()))
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
# keep_flags = ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']
rel2id = {rel: _id + 1 for _id, rel in enumerate(sorted(relationships))}
rel2id['unk'] = 0
if not incremental_train:
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
with open(os.path.join(model_save_path, 'rel2id.pkl'), "wb") as f:
pickle.dump(rel2id, f)
self.tokenizer, self.keep_words, self.rel2id = tokenizer, keep_words, rel2id
return tokenizer, keep_words, rel2id
def get_correct_fn():
save_path = join(MODEL_PATH, 'detect')
token_dict = joblib.load(
join(MODEL_PATH, 'train_pre_for_error_detect', 'token_dict.joblib'))
tokenizer = SimpleTokenizer(token_dict)
keep_words = joblib.load(
join(MODEL_PATH, 'train_pre_for_error_detect', 'keep_words.joblib'))
model = DetectModel(keep_words=keep_words)
model.compile()
model.model.load_weights(join(save_path, 'weights.hdf5'))
checker = Statistics()
def correct(error_text):
text_tokens = tokenizer.tokenize(error_text, False,
False)[:ec_cfg.max_seq_len - 2]
tokens = list()
tokens.append("[CLS]")
for token in text_tokens:
tokens.append(token)
tokens.append("[SEP]")
input_ids = [
token_dict[c] if c in token_dict.keys() else token_dict['[UNK]']
for c in tokens
]
while len(input_ids) < ec_cfg.max_seq_len:
input_ids.append(0)
seg_ids = np.zeros_like(input_ids, dtype=np.int)
ids, segs = [input_ids], [seg_ids]
res = model.model.predict([ids, segs])[0][1:-1]
begins_pred = []
lengths_pred = []
this_len = 0
for i, r in enumerate(res):
if np.argmax(r) > 0:
if this_len == 0:
begins_pred.append(i)
this_len += 1
else:
if this_len > 0:
lengths_pred.append(this_len)
this_len = 0
else:
if this_len > 0:
lengths_pred.append(this_len)
res_str = checker.correct(error_text, begins_pred, lengths_pred)
return res_str
return correct
def process_data(neg_file='datasets/neg.xls', pos_file='datasets/pos.xls'):
neg = pd.read_excel(neg_file, header=None)
pos = pd.read_excel(pos_file, header=None)
chars = {}
data = []
for d in neg[0]:
data.append((d, 0))
for c in d:
chars[c] = chars.get(c, 0) + 1
for d in pos[0]:
data.append((d, 1))
for c in d:
chars[c] = chars.get(c, 0) + 1
chars = {i: j for i, j in chars.items() if j >= 4}
_token_dict = load_vocab(dict_path) # 读取词典
token_dict, keep_words = {}, set()
for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
token_dict[c] = len(token_dict)
keep_words.add(_token_dict[c])
for c in chars:
if c in _token_dict:
token_dict[c] = len(token_dict)
keep_words.add(_token_dict[c])
keep_words.add(max(keep_words) + 1)
keep_words = list(keep_words)
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
if not os.path.exists('./random_order.json'):
random_order = [i for i in range(len(data))]
random.shuffle(random_order)
json.dump(random_order, open('./random_order.json', 'w'), indent=4)
else:
random_order = json.load(open('./random_order.json'))
# 按照9:1的比例划分训练集和验证集
train_data = [data[j] for i, j in enumerate(random_order) if i % 10 != 0]
valid_data = [data[j] for i, j in enumerate(random_order) if i % 10 == 0]
return train_data, valid_data, tokenizer, keep_words
def save_vocab(self, save_path, process_data):
chars = set()
relationships = set()
for text, relationship in process_data:
words = split_text(text)
chars.update(set(words))
relationships.add(relationship)
token_dict = load_vocab(dict_path) # 读取词典
keep_chars = ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']
for char in chars:
if not token_dict.get(char):
# token_dict[char] = len(token_dict)
keep_chars.append(char)
# for char in keep_chars:
# if not token_dict.get(char):
# token_dict[char] = len(token_dict)
keep_words = list(set(token_dict.values()))
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
word2id = {
word: id_ + len(keep_chars)
for id_, word in enumerate(chars)
}
for _id, word in enumerate(keep_chars):
word2id[word] = _id
rel2id = {rel: _id for _id, rel in enumerate(relationships)}
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
with open(os.path.join(save_path, 'word2id.pkl'), "wb") as f:
pickle.dump(word2id, f)
with open(os.path.join(save_path, 'rel2id.pkl'), "wb") as f:
pickle.dump(rel2id, f)
self.tokenizer, self.word2id, self.rel2id = tokenizer, word2id, rel2id
return tokenizer, keep_words, word2id, rel2id
def save_vocab(self, save_path, process_data):
flags = set()
relationships = set()
for old_word_flag, relationship in process_data:
word_flag = []
for word, flag in old_word_flag:
# if flag[0] == 'B':
# flag = 'B-Shiyi'
# elif flag[0] == 'I':
# flag = 'I-Shiyi'
word_flag.append([word, flag])
flags.update(set(flag for word, flag in word_flag))
relationships.add(relationship)
token_dict = load_vocab(dict_path) # 读取词典
keep_words = list(set(token_dict.values()))
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
keep_flags = ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']
flag2id = {
label: id_ + len(keep_flags)
for id_, label in enumerate(
sorted(flags, key=lambda x: 0 if x == 'O' else 1))
}
for flag_id, flag in enumerate(keep_flags):
flag2id[flag] = flag_id
rel2id = {rel: _id for _id, rel in enumerate(relationships)}
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
with open(os.path.join(save_path, 'flag2id.pkl'), "wb") as f:
pickle.dump(flag2id, f)
with open(os.path.join(save_path, 'rel2id.pkl'), "wb") as f:
pickle.dump(rel2id, f)
self.tokenizer, self.flag2id, self.rel2id = tokenizer, flag2id, rel2id
return tokenizer, keep_words, flag2id, rel2id
def __init__(self,
initial_model=True,
model_path=os.path.join(CONFIG['model_dir'], 'albert.h5')):
self.initial_model = initial_model
token_dict = load_vocab(DICT_PATH)
self.tokenizer = SimpleTokenizer(token_dict)
self.model_path = model_path
if initial_model:
self.albert_model = load_pretrained_model(
CONFIG_PATH,
CHECKPOINT_PATH,
# keep_words=keep_words,
albert=True)
else:
self.load(model_path)
for l in self.albert_model.layers:
l.trainable = True
def save_vocab(self, model_save_path, process_data):
chars = set()
labels = set()
for char_labels in process_data:
for char, label in char_labels:
chars.add(char)
labels.add(label)
_token_dict = load_vocab(dict_path) # 读取词典
token_dict, keep_words = {}, set()
for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
token_dict[c] = len(token_dict)
keep_words.add(_token_dict[c])
for c in chars:
if c in _token_dict:
token_dict[c] = len(token_dict)
keep_words.add(_token_dict[c])
keep_words.add(max(keep_words) + 1)
keep_words = list(keep_words)
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
with open(os.path.join(model_save_path, 'tokenizer.pkl'), "wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'), "wb") as f:
pickle.dump(keep_words, f)
# print('labels={}'.format(labels))
# sorted: 保证 非实体词 O 的id为0
self.label2id = {
label: id_
for id_, label in enumerate(
sorted(labels, key=lambda x: 0 if x == 'O' else 1))
}
print('label2id: {}'.format(self.label2id))
with open(os.path.join(model_save_path, 'label2id.pkl'), "wb") as f:
pickle.dump(self.label2id, f)
self.keep_words = keep_words
self.tokenizer = tokenizer
def __init__(self, batch_size=32, train=False):
self.batch_size = batch_size
if train:
chars = set()
train_datas = read_datas(TRAIN_DATA_FILE)
dev_datas = read_datas(DEV_DATA_FILE)
test_datas = read_datas(TEST_DATA_FILE)
for text1, text2, label in itertools.chain(train_datas, dev_datas):
chars.update(set(text1))
chars.update(set(text2))
_token_dict = load_vocab(dict_path) # 读取词典
self.token_dict, self.keep_words = {}, []
for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
self.token_dict[c] = len(self.token_dict)
self.keep_words.append(_token_dict[c])
for c in chars:
if c in _token_dict:
self.token_dict[c] = len(self.token_dict)
self.keep_words.append(_token_dict[c])
self.tokenizer = SimpleTokenizer(self.token_dict) # 建立分词器
with open(os.path.join(model_save_path, 'tokenizer.pkl'),
"wb") as f:
pickle.dump(self.tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'),
"wb") as f:
pickle.dump(self.keep_words, f)
else:
with open(os.path.join(model_save_path, 'tokenizer.pkl'),
"rb") as f:
self.tokenizer = pickle.load(f)
with open(os.path.join(model_save_path, 'keep_words.pkl'),
"rb") as f:
self.keep_words = pickle.load(f)
self.model = self.make_model()
def save_word2id_etc(self, datas, incremental_train=False):
label_set = set()
_token_dict = load_vocab(dict_path) # 读取词典
# token_dict, keep_words = {}, set()
token_dict = copy.deepcopy(_token_dict)
# for c in ['[PAD]', '[UNK]', '[CLS]', '[SEP]', '[unused1]']:
# token_dict[c] = len(token_dict)
# keep_words.add(_token_dict[c])
for chars, label in datas:
label_set.add(label)
# for c in chars:
# if c in _token_dict:
# token_dict[c] = len(token_dict)
# keep_words.add(_token_dict[c])
# keep_words.add(max(keep_words)+1)
# keep_words = list(keep_words)
keep_words = list(set(token_dict.values()))
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
label2id = {lab: i for i, lab in enumerate(list(label_set))}
if not incremental_train:
with open(os.path.join(model_save_path, 'tokenizer.pkl'),
"wb") as f:
pickle.dump(tokenizer, f)
with open(os.path.join(model_save_path, 'keep_words.pkl'),
"wb") as f:
pickle.dump(keep_words, f)
with open(os.path.join(model_save_path, 'label2id.pkl'),
"wb") as f:
pickle.dump(label2id, f)
return tokenizer, keep_words, label2id
import tensorflow as tf
from bert4keras.bert import load_pretrained_model
from bert4keras.utils import SimpleTokenizer, load_vocab
import numpy as np
gpus = tf.config.experimental.list_physical_devices('GPU')
for gpu in gpus:
print("Name:", gpu.name, " Type:", gpu.device_type)
tf.config.experimental.set_virtual_device_configuration(
gpus[0],
[tf.config.experimental.VirtualDeviceConfiguration(memory_limit=1024)])
print(tf.__version__)
base_path = 'D:\AI\Data\chinese_L-12_H-768_A-12\\'
config_path = base_path + 'bert_config.json'
checkpoint_path = base_path + 'bert_model.ckpt'
dict_path = base_path + 'vocab.txt'
token_dict = load_vocab(dict_path) # 读取词典
tokenizer = SimpleTokenizer(token_dict) # 建立分词器
model = load_pretrained_model(config_path, checkpoint_path) # 建立模型，加载权重
# 编码测试
token_ids, segment_ids = tokenizer.encode(u'语言模型')
print(model.predict([np.array([token_ids]), np.array([segment_ids])]))