forked from baidu/Senta
-
Notifications
You must be signed in to change notification settings - Fork 0
/
sentiment_classify.py
291 lines (261 loc) · 8.97 KB
/
sentiment_classify.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
import logging
import argparse
import ast
import paddle.fluid as fluid
import utils
from nets import bow_net
from nets import cnn_net
from nets import lstm_net
from nets import bilstm_net
from nets import gru_net
logger = logging.getLogger("paddle-fluid")
logger.setLevel(logging.INFO)
def parse_args():
parser = argparse.ArgumentParser("Sentiment Classification.")
# training data path
parser.add_argument(
"--train_data_path",
type=str,
required=False,
help="The path of trainning data. Should be given in train mode!")
# test data path
parser.add_argument(
"--test_data_path",
type=str,
required=False,
help="The path of test data. Should be given in eval or infer mode!")
# word_dict path
parser.add_argument(
"--word_dict_path",
type=str,
required=True,
help="The path of word dictionary.")
# current mode
parser.add_argument(
"--mode",
type=str,
required=True,
choices=['train', 'eval', 'infer'],
help="train/eval/infer mode")
# model type
parser.add_argument(
"--model_type",
type=str,
default="bilstm_net",
help="type of model")
# model save path
parser.add_argument(
"--model_path",
type=str,
default="models",
required=True,
help="The path to saved the trained models.")
# Number of passes for the training task.
parser.add_argument(
"--num_passes",
type=int,
default=10,
help="Number of passes for the training task.")
# Batch size
parser.add_argument(
"--batch_size",
type=int,
default=256,
help="The number of training examples in one forward/backward pass.")
# lr value for training
parser.add_argument(
"--lr",
type=float,
default=0.002,
help="The lr value for training.")
# Whether to use gpu
parser.add_argument(
"--use_gpu",
type=ast.literal_eval,
default=False,
help="Whether to use gpu to train the model.")
# parallel train
parser.add_argument(
"--is_parallel",
type=ast.literal_eval,
default=False,
help="Whether to train the model in parallel.")
args = parser.parse_args()
return args
def train_net(train_reader,
word_dict,
network,
use_gpu,
parallel,
save_dirname,
lr=0.002,
batch_size=128,
pass_num=30):
"""
train network
"""
if network == "bilstm_net":
network = bilstm_net
elif network == "bow_net":
network = bow_net
elif network == "cnn_net":
network = cnn_net
elif network == "lstm_net":
network = lstm_net
elif network == "gru_net":
network = gru_net
else:
print ("unknown network type")
return
# word seq data
data = fluid.layers.data(
name="words", shape=[1], dtype="int64", lod_level=1)
# label data
label = fluid.layers.data(name="label", shape=[1], dtype="int64")
if not parallel:
# set network
cost, acc, pred = network(data, label, len(word_dict) + 1)
else:
places = fluid.layers.get_places(device_count=2)
pd = fluid.layers.ParallelDo(places)
with pd.do():
# set network
cost, acc, prediction = network(
pd.read_input(data), pd.read_input(label), len(word_dict) + 1)
pd.write_output(cost)
pd.write_output(acc)
cost, acc = pd()
cost = fluid.layers.mean(cost)
acc = fluid.layers.mean(acc)
# set optimizer
sgd_optimizer = fluid.optimizer.Adagrad(learning_rate=lr)
sgd_optimizer.minimize(cost)
# set place, executor, datafeeder
place = fluid.CUDAPlace(0) if use_gpu else fluid.CPUPlace()
exe = fluid.Executor(place)
feeder = fluid.DataFeeder(feed_list=[data, label], place=place)
exe.run(fluid.default_startup_program())
# start training...
for pass_id in range(pass_num):
data_size, data_count, total_acc, total_cost = 0, 0, 0.0, 0.0
for data in train_reader():
# train a batch
avg_cost_np, avg_acc_np = exe.run(fluid.default_main_program(),
feed=feeder.feed(data),
fetch_list=[cost, acc])
data_size = len(data)
total_acc += data_size * avg_acc_np
total_cost += data_size * avg_cost_np
data_count += data_size
avg_cost = total_cost / data_count
avg_acc = total_acc / data_count
print("[train info]: pass_id: %d, avg_acc: %f, avg_cost: %f" %
(pass_id, avg_acc, avg_cost))
epoch_model = save_dirname + "/" + "epoch" + str(pass_id)
# save the model
fluid.io.save_inference_model(epoch_model, ["words"], pred, exe)
def eval_net(test_reader, use_gpu, model_path=None):
"""
Evaluation function
"""
if model_path is None:
print (str(model_path) + "can not be found")
return
# set place, executor
place = fluid.CUDAPlace(0) if use_gpu else fluid.CPUPlace()
exe = fluid.Executor(place)
inference_scope = fluid.core.Scope()
with fluid.scope_guard(inference_scope):
# load the saved model
[inference_program, feed_target_names,
fetch_targets] = fluid.io.load_inference_model(model_path, exe)
# compute 2class and 3class accuracy
class2_acc, class3_acc = 0.0, 0.0
total_count, neu_count = 0, 0
for data in test_reader():
# infer a batch
pred = exe.run(inference_program,
feed=utils.data2tensor(data, place),
fetch_list=fetch_targets,
return_numpy=True)
for i, val in enumerate(data):
class3_label, class2_label = utils.get_predict_label(pred[0][i, 1])
true_label = val[1]
if class2_label == true_label:
class2_acc += 1
if class3_label == true_label:
class3_acc += 1
if true_label == 1.0:
neu_count += 1
total_count += len(data)
class2_acc = class2_acc / (total_count - neu_count)
class3_acc = class3_acc / total_count
print("[test info] model_path: %s, class2_acc: %f, class3_acc: %f" %
(model_path, class2_acc, class3_acc))
def infer_net(test_reader, use_gpu, model_path=None):
"""
Inference function
"""
if model_path is None:
print(str(model_path) + "can not be found")
return
# set place, executor
place = fluid.CUDAPlace(0) if use_gpu else fluid.CPUPlace()
exe = fluid.Executor(place)
inference_scope = fluid.core.Scope()
with fluid.scope_guard(inference_scope):
# load the saved model
[inference_program, feed_target_names,
fetch_targets] = fluid.io.load_inference_model(model_path, exe)
for data in test_reader():
# infer a batch
pred = exe.run(inference_program,
feed=utils.data2tensor(data, place),
fetch_list=fetch_targets,
return_numpy=True)
for i, val in enumerate(data):
class3_label, class2_label = utils.get_predict_label(pred[0][i, 1])
pos_prob = pred[0][i, 1]
neg_prob = 1 - pos_prob
print("predict label: %d, pos_prob: %f, neg_prob: %f" %
(class3_label, pos_prob, neg_prob))
def main(args):
# train mode
if args.mode == "train":
# prepare_data to get word_dict, train_reader
word_dict, train_reader = utils.prepare_data(
args.train_data_path, args.word_dict_path, args.batch_size,
args.mode)
train_net(
train_reader,
word_dict,
args.model_type,
args.use_gpu,
args.is_parallel,
args.model_path,
args.lr,
args.batch_size,
args.num_passes)
# eval mode
elif args.mode == "eval":
# prepare_data to get word_dict, test_reader
word_dict, test_reader = utils.prepare_data(
args.test_data_path, args.word_dict_path, args.batch_size,
args.mode)
eval_net(
test_reader,
args.use_gpu,
args.model_path)
# infer mode
elif args.mode == "infer":
# prepare_data to get word_dict, test_reader
word_dict, test_reader = utils.prepare_data(
args.test_data_path, args.word_dict_path, args.batch_size,
args.mode)
infer_net(
test_reader,
args.use_gpu,
args.model_path)
if __name__ == "__main__":
args = parse_args()
main(args)