def load_data(self):
print(config.get_current_time("load row data"))
train = pd.read_csv(config.TRAIN_DIR)
test = pd.read_csv(config.TEST_DIR)
## split to train and val
train_data, val_data = train_test_split(train,
test_size=0.08,
random_state=2018)
print("Train data: {}, Valid data: {}, Test data: {}.".format(
train.shape, val_data.shape, test.shape))
## fill up the missing values
train_X = train_data["question_text"].fillna("_##_").values
val_X = val_data["question_text"].fillna("_##_").values
test_X = test["question_text"].fillna("_##_").values
## Tokenize the sentences
tokenizer = Tokenizer(num_words=self.MAX_NB_WORDS)
tokenizer.fit_on_texts(list(train_X))
self.word_index = tokenizer.word_index
train_X = tokenizer.texts_to_sequences(train_X)
val_X = tokenizer.texts_to_sequences(val_X)
test_X = tokenizer.texts_to_sequences(test_X)
## Pad the sentences
train_X = pad_sequences(train_X, maxlen=self.data_len)
val_X = pad_sequences(val_X, maxlen=self.data_len)
test_X = pad_sequences(test_X, maxlen=self.data_len)
## Get the target values
train_y = train_data['target'].values
val_y = val_data['target'].values
# shuffling the data
np.random.seed(2018)
trn_idx = np.random.permutation(len(train_X))
val_idx = np.random.permutation(len(val_X))
train_X = train_X[trn_idx]
val_X = val_X[val_idx]
train_y = train_y[trn_idx]
val_y = val_y[val_idx]
train_y = to_categorical(train_y, num_classes=2)
val_y = to_categorical(val_y, num_classes=2)
print(config.get_current_time("return data"))
return train_X, train_y, val_X, val_y, test_X
def log_time_helper(mode, is_starting=True):
if is_starting:
w = "starting"
else:
w = "ending"
current_time = get_current_time()
my_logger.info("[+] Mode = {}; {} at {}".format(mode, w, current_time[0]))
return current_time
def load_topic_info(self):
'''
just get the topic ids
:return:
'''
print(config.get_current_time(), "loading topic info")
with open(config.TOPIC_INFO_DIR, 'r') as f:
for index, line in enumerate(f.readlines()):
self.topic_dict[line.strip('\n').split('\t')[0]] = index
self.topic_dict_inv[index] = line.strip('\n').split('\t')[0]
def load_wiki_news_em_matrix(self):
'''
:return:
'''
print(config.get_current_time("load_wiki_news_em_matrix"))
embeddings_index = dict()
embedding_max_value = 0
embedding_min_value = 1
with open(config.WIKI_NEWS_DIR, 'r', encoding='utf-8') as f:
for line in f:
line = line.strip().split(' ')
if len(line) != 301:
continue
coefs = np.asarray(line[1:], dtype='float32')
if np.max(coefs) > embedding_max_value:
embedding_max_value = np.max(coefs)
if np.min(coefs) < embedding_min_value:
embedding_min_value = np.min(coefs)
embeddings_index[line[0]] = coefs
print(
config.get_current_time(
('Found %s word vectors.' % len(embeddings_index))))
self.WIKI_NEWS_EM = np.zeros(
(len(self.word_index) + 1, self.EMBEDDING_DIM))
for word, i in self.word_index.items():
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None:
# words not found in embedding index will be all-zeros.
self.WIKI_NEWS_EM[i] = embedding_vector
else:
self.WIKI_NEWS_EM[i] = np.random.uniform(
low=embedding_min_value,
high=embedding_max_value,
size=self.EMBEDDING_DIM)
def get_quesids(self):
'''
:return:
'''
question_ids = []
print(config.get_current_time(), 'loading question eval ids')
with open(config.QUESTION_EVAL_SET_DIR, 'r') as f:
for index, line in enumerate(f.readlines()):
splitted = line.strip('\n').split('\t')
question_ids.append(splitted[0])
self.load_topic_info()
return question_ids
def load_google_news_em_matrix(self):
print(config.get_current_time("load_google_news_em_matrix"))
self.GOOGLE_NEWS_EM = np.zeros(
(len(self.word_index) + 1, self.EMBEDDING_DIM))
model = gensim.models.KeyedVectors.load_word2vec_format(
config.GOOGLE_NEWS_DIR, binary=True)
for word, i in self.word_index.items():
try:
embedding_vector = model[word]
except:
embedding_vector = None
if embedding_vector is not None:
self.GOOGLE_NEWS_EM[i] = embedding_vector
else:
self.GOOGLE_NEWS_EM[i] = np.random.uniform(
low=-0.0018054, high=0.047287, size=self.EMBEDDING_DIM)
def load_charembedding_matrix(self):
embeddings_index = dict()
embedding_max_value = 0
embedding_min_value = 1
with open(config.CHAR_EMBEDDING_DIR, 'r') as f:
for line in f:
line = line.strip().split(' ')
if len(line) != 257:
continue
coefs = np.asarray(line[1:], dtype='float32')
if np.max(coefs) > embedding_max_value:
embedding_max_value = np.max(coefs)
if np.min(coefs) < embedding_min_value:
embedding_min_value = np.min(coefs)
embeddings_index[line[0]] = coefs
print(config.get_current_time(),
('Found %s char vectors.' % len(embeddings_index)))
self.embedchar_matrix = np.zeros((len(self.char_index) + 1, 256))
for word, i in self.char_index.items():
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None:
# words not found in embedding index will be all-zeros.
self.embedchar_matrix[i] = embedding_vector
else:
self.embedchar_matrix[i] = np.random.uniform(
low=embedding_min_value,
high=embedding_max_value,
size=256)
def load_train_data(self):
'''
title_char+title_word+dsp_char+dsp_word
:param istitle: bool
:param iscontent: bool
:param type_kind: char or word
:return:
'''
title_char_list = []
title_word_list = []
dsp_char_list = []
dsp_word_list = []
question_ids = []
print(config.get_current_time(), 'loading question train set file')
with open(config.QUESTION_TRAIN_SET_DIR, 'r') as f:
for index, line in enumerate(f.readlines()):
if index > 500:
break
splitted = line.strip('\n').split('\t')
if len(splitted) == 1:
continue
elif len(splitted) == 2:
continue
elif len(splitted) == 5:
title_char_list.append(splitted[1].replace(',', ' '))
title_word_list.append(splitted[2].replace(',', ' '))
dsp_char_list.append(splitted[3].replace(',', ' '))
dsp_word_list.append(splitted[4].replace(',', ' '))
self.max_titlechar_len = max(len(splitted[1].split(',')),
self.max_titlechar_len)
self.max_titleword_len = max(len(splitted[2].split(',')),
self.max_titleword_len)
self.max_dspchar_len = max(len(splitted[3].split(',')),
self.max_dspchar_len)
self.max_dspword_len = max(len(splitted[4].split(',')),
self.max_dspword_len)
question_ids.append(splitted[0])
else:
continue
# print('max titlecharlength', self.max_titlechar_len)
# print('max titleword length', self.max_titleword_len)
# print('max dspchar length', self.max_dspchar_len)
# print('max dspword length', self.max_dspword_len)
pickle.dump(self.tw_len, open(self.savedir + '/tw_len.pkl', 'wb'))
pickle.dump(self.tc_len, open(self.savedir + '/tc_len.pkl', 'wb'))
pickle.dump(self.dsppad_length,
open(self.savedir + '/dsp_pad_length.pkl', 'wb'))
# ------titleword--------
print(config.get_current_time(), 'tokenizer title word working')
tokenizer_word = Tokenizer(num_words=self.MAX_NB_WORDS)
tokenizer_word.fit_on_texts(title_word_list + dsp_word_list)
sequences_titleword = tokenizer_word.texts_to_sequences(
title_word_list)
self.word_index = tokenizer_word.word_index
print(config.get_current_time(),
'Found %s unique word tokens.' % len(self.word_index))
titleword_array = pad_sequences(sequences_titleword,
maxlen=self.tw_len) # return arrays
pickle.dump(tokenizer_word,
open(self.savedir + '/tokenizer_word.pkl', 'wb'))
print('tokenzier is saved as %s/tokenizer_word.pkl' % (self.savedir))
# -----titlechar---------
print(config.get_current_time(), 'tokenizer title char working')
tokenizer_char = Tokenizer(num_words=self.MAX_NB_WORDS)
tokenizer_char.fit_on_texts(title_char_list + dsp_char_list)
sequences_titlechar = tokenizer_char.texts_to_sequences(
title_char_list)
self.char_index = tokenizer_char.word_index
print(config.get_current_time(),
'Found %s unique char tokens.' % len(self.char_index))
titlechar_array = pad_sequences(sequences_titlechar,
maxlen=self.tc_len) # return arrays
pickle.dump(tokenizer_char,
open(self.savedir + '/tokenizer_char.pkl', 'wb'))
print('tokenzier is saved as %s/tokenizer_char.pkl' % (self.savedir))
# -----dspword--------
print(config.get_current_time(), 'tokenizer dsp char working')
sequences_dspchar = tokenizer_char.texts_to_sequences(dsp_char_list)
dspchar_array = pad_sequences(
sequences_dspchar, maxlen=self.dsppad_length) # return arrays
# ---dspchar---------
print(config.get_current_time(), 'tokenizer dsp word working')
sequences_dspword = tokenizer_word.texts_to_sequences(dsp_word_list)
dspword_array = pad_sequences(
sequences_dspword, maxlen=self.dsppad_length) # return arrays
self.load_topic_info()
question_to_label = {}
print(config.get_current_time(), 'loading train labels')
with open(config.QUESTION_TOPIC_TRAIN_DIR, 'r') as f:
for index, line in enumerate(f.readlines()):
# if index>100000:
# break
splitted = line.strip('\n').split('\t')
if len(splitted) != 2:
print('error!')
question_to_label[splitted[0]] = [
self.topic_dict[i] for i in splitted[1].split(',')
]
print(config.get_current_time(), 'duiqi traindata and labels')
row_ = []
col_ = []
count_1 = 0
# label_dense = np.zeros((train_titleword_array.shape[0], 1999))
for row, quesid in enumerate(question_ids):
cols = question_to_label.get(quesid)
if cols is None:
print('error!')
count_1 += len(cols)
for k in cols:
row_.append(row)
col_.extend(cols)
data_ = [1 for i in row_]
label_sparse = csr_matrix((data_, (row_, col_)),
shape=(len(question_ids), 1999))
# # Shuffle data
# shuffle_indices = np.random.permutation(np.arange(train_titleword_array.shape[0]))
# x_word = train_titleword_array[shuffle_indices]
# x_char = train_titlechar_array[shuffle_indices]
# row_ = [row_[i] for i in shuffle_indices]
# col_ = [col_[i] for i in shuffle_indices]
#
# # label_dense = label_dense[shuffle_indices]
# # label_sparse = csr_matrix(([1 for i in range(count_1))],(row_,col_)),shape = ())
#
# train_len = int(x_word.shape[0] * 0.9)
# x_word_train = x_word[:train_len]
# x_char_train = x_char[:train_len]
# y_train = label_sparse[:train_len]
# x_word_test = x_word[train_len:]
# x_char_test = x_char[train_len:]
# y_test = label_sparse[train_len:]
# return (x_word_train, x_char_train, y_train, x_word_test, x_char_test, y_test)
return titlechar_array, titleword_array, dspchar_array, dspword_array, label_sparse
def load_pred_data_4part(self):
'''
:return:
'''
title_char_list = []
title_word_list = []
dsp_char_list = []
dsp_word_list = []
question_ids = []
self.tw_len = pickle.load(open(self.savedir + '/tw_len.pkl', 'rb'))
self.tc_len = pickle.load(open(self.savedir + '/tc_len.pkl', 'rb'))
self.dsppad_length = pickle.load(
open(self.savedir + '/dsp_pad_length.pkl', 'rb'))
print('length is loaded!')
print(config.get_current_time(), 'loading question eval set file')
with open(config.QUESTION_EVAL_SET_DIR, 'r') as f:
for index, line in enumerate(f.readlines()):
# if index>50000:
# break
splitted = line.strip('\n').split('\t')
if len(splitted) == 1:
print('error!')
exit()
elif len(splitted) == 2:
title_char_list.append(splitted[1].replace(',', ' '))
title_word_list.append(" ")
dsp_char_list.append(" ")
dsp_word_list.append(" ")
elif len(splitted) == 3:
title_char_list.append(splitted[1].replace(',', ' '))
title_word_list.append(splitted[2].replace(',', ' '))
dsp_char_list.append(" ")
dsp_word_list.append(" ")
elif len(splitted) == 4:
title_char_list.append(splitted[1].replace(',', ' '))
title_word_list.append(splitted[2].replace(',', ' '))
dsp_char_list.append(splitted[3].replace(',', ' '))
dsp_word_list.append(" ")
elif len(splitted) == 5:
title_char_list.append(splitted[1].replace(',', ' '))
title_word_list.append(splitted[2].replace(',', ' '))
dsp_char_list.append(splitted[3].replace(',', ' '))
dsp_word_list.append(splitted[4].replace(',', ' '))
question_ids.append(splitted[0])
tokenizer_word = pickle.load(
open(self.savedir + '/tokenizer_word.pkl', 'rb'))
tokenizer_char = pickle.load(
open(self.savedir + '/tokenizer_char.pkl', 'rb'))
print('tokenizer word loaded!')
print("")
print(config.get_current_time(), 'tokenizer working title char')
titlechar_sequences_char = tokenizer_char.texts_to_sequences(
title_char_list)
self.char_index = tokenizer_char.word_index
titlechar_array = pad_sequences(titlechar_sequences_char,
maxlen=self.tc_len) # return arrays
print(config.get_current_time(), 'tokenizer working title word')
titleword_sequences_word = tokenizer_word.texts_to_sequences(
title_word_list)
self.word_index = tokenizer_word.word_index
titleword_array = pad_sequences(titleword_sequences_word,
maxlen=self.tw_len) # return arrays
print(config.get_current_time(), 'tokenizer working dsp char')
dspchar_sequences_char = tokenizer_char.texts_to_sequences(
dsp_char_list)
dspchar_array = pad_sequences(
dspchar_sequences_char, maxlen=self.dsppad_length) # return arrays
print(config.get_current_time(), 'tokenizer working dsp word')
dspword_sequences_word = tokenizer_word.texts_to_sequences(
dsp_word_list)
dspword_array = pad_sequences(
dspword_sequences_word, maxlen=self.dsppad_length) # return arrays
self.load_topic_info()
return titlechar_array, titleword_array, dspchar_array, dspword_array, question_ids
with open("final_423.csv", 'w') as f:
for i in range(predlabels.shape[0]):
# f.write(ques_ids[i] + "," + ','.join([topic_dict_inv[k] for k in predlabels[i]]) + '\n')
f.write(ques_ids[i] + "," + ','.join(tmpfunc(predlabels[i])) +
'\n')
if __name__ == '__main__':
if len(sys.argv) < 2:
print('error, give me mode ')
exit()
mode = sys.argv[1]
print(config.get_current_time(), 'current mode:', mode)
if mode == "train":
save_root_dir = './model_exp' #your own path, to save models,tokenizers...
dl = data_loader(save_root_dir)
datatuple = dl.load_train_data()
dl.load_charembedding_matrix()
dl.load_wordembedding_matrix()
mymodel = MultiModel(w_embed_matrix=dl.embedword_matrix,
c_embed_matrix=dl.embedchar_matrix,
word_index=dl.word_index,
char_index=dl.char_index,
titlechar_length=dl.tc_len,
def bulid_model(self):
'''
:return:
'''
print(config.get_current_time("building model ------"))
# ----------- title local w2v ----------
with tf.device('/gpu:%d' % (0)):
tl_embedding_layer = Embedding(len(self.word_index) + 1,
self.EMBEDDING_DIM,
weights=[self.GLOVE_EM],
input_length=self.data_len, trainable=True,
embeddings_initializer=initializers.RandomUniform(minval=-0.2, maxval=0.2,
seed=None))
tl_sequence_input = Input(shape=(self.data_len,), name="title_local_w2v_input")
tl_embedded_sequences = tl_embedding_layer(tl_sequence_input)
with tf.device('/gpu:%d' % (0)):
tl_z_pos = LSTM(512, implementation=2, return_sequences=True, go_backwards=False)(tl_embedded_sequences)
tl_z_neg = LSTM(512, implementation=2, return_sequences=True, go_backwards=True)(tl_embedded_sequences)
tl_z_concat = concatenate([tl_z_pos, tl_embedded_sequences, tl_z_neg], axis=-1)
tl_z = Dense(512, activation='tanh')(tl_z_concat)
tl_pool_rnn = Lambda(lambda x: K.max(x, axis=1), output_shape=(512,))(tl_z)
# ---------- title ai w2v ----------
with tf.device('/gpu:%d' % (0)):
ta_embedding_layer = Embedding(len(self.word_index) + 1,
self.EMBEDDING_DIM,
weights=[self.GOOGLE_NEWS_EM],
input_length=self.data_len, trainable=True,
embeddings_initializer=initializers.RandomUniform(minval=-0.2, maxval=0.2,
seed=None))
ta_sequence_input = Input(shape=(self.data_len,), name="title_ai_w2v_input")
ta_embedded_sequences = ta_embedding_layer(ta_sequence_input)
with tf.device('/gpu:%d' % (0)):
ta_z_pos = LSTM(512, implementation=2, return_sequences=True, go_backwards=False)(ta_embedded_sequences)
ta_z_neg = LSTM(512, implementation=2, return_sequences=True, go_backwards=True)(ta_embedded_sequences)
ta_z_concat = concatenate([ta_z_pos, ta_embedded_sequences, ta_z_neg], axis=-1)
ta_z = Dense(512, activation='tanh')(ta_z_concat)
ta_pool_rnn = Lambda(lambda x: K.max(x, axis=1), output_shape=(512,))(ta_z)
# ----------- des local w2v ----------
with tf.device('/gpu:%d' % (0)):
dl_embedding_layer = Embedding(len(self.word_index) + 1,
self.EMBEDDING_DIM,
weights=[self.PARAGRAM_EM],
input_length=self.data_len, trainable=True,
embeddings_initializer=initializers.RandomUniform(minval=-0.2, maxval=0.2,
seed=None))
dl_sequence_input = Input(shape=(self.data_len,), name="des_local_w2v_input")
dl_embedded_sequences = dl_embedding_layer(dl_sequence_input)
with tf.device('/gpu:%d' % (0)):
dl_z_pos = LSTM(512, implementation=2, return_sequences=True, go_backwards=False)(dl_embedded_sequences)
dl_z_neg = LSTM(512, implementation=2, return_sequences=True, go_backwards=True)(dl_embedded_sequences)
dl_z_concat = concatenate([dl_z_pos, dl_embedded_sequences, dl_z_neg], axis=-1)
dl_z = Dense(512, activation='tanh')(dl_z_concat)
dl_pool_rnn = Lambda(lambda x: K.max(x, axis=1), output_shape=(512,))(dl_z)
# ---------- des ai w2v ----------
with tf.device('/gpu:%d' % (0)):
da_embedding_layer = Embedding(len(self.word_index) + 1,
self.EMBEDDING_DIM,
weights=[self.WIKI_NEWS_EM],
input_length=self.data_len, trainable=True,
embeddings_initializer=initializers.RandomUniform(minval=-0.2, maxval=0.2,
seed=None))
da_sequence_input = Input(shape=(self.data_len,), name="des_ai_w2v_input")
da_embedded_sequences = da_embedding_layer(da_sequence_input)
with tf.device('/gpu:%d' % (0)):
da_z_pos = LSTM(512, implementation=2, return_sequences=True, go_backwards=False)(da_embedded_sequences)
da_z_neg = LSTM(512, implementation=2, return_sequences=True, go_backwards=True)(da_embedded_sequences)
da_z_concat = concatenate([da_z_pos, da_embedded_sequences, da_z_neg], axis=-1)
da_z = Dense(512, activation='tanh')(da_z_concat)
da_pool_rnn = Lambda(lambda x: K.max(x, axis=1), output_shape=(512,))(da_z)
# ---------- att ----------
concat_t_d = concatenate([tl_pool_rnn, ta_pool_rnn, dl_pool_rnn, da_pool_rnn], axis=-1)
concat_t_d = Reshape((2, 512 * 2))(concat_t_d)
attention = Dense(1, activation='tanh')(concat_t_d)
attention = Flatten()(attention)
attention = Activation('softmax')(attention)
attention = RepeatVector(512 * 2)(attention)
attention = Permute([2, 1])(attention)
sent_representation = multiply([concat_t_d, attention])
sent_representation = Lambda(lambda xin: K.sum(xin, axis=-2), output_shape=(512 * 2,))(sent_representation)
# ---------- merge_4models ----------
model_final_ = Dense(2, activation='relu')(sent_representation)
model_final_ = Dropout(0.5)(model_final_)
model_final = Dense(2, activation='softmax')(model_final_)
self.model = Model(inputs=[tl_sequence_input, ta_sequence_input, dl_sequence_input, da_sequence_input],
outputs=model_final)
adam = optimizers.adam(lr=0.00001)
self.model.compile(loss='categorical_crossentropy',
optimizer=adam,
metrics=[f1])
print(self.model.summary())
