create_word2vec.info_npy(file_list)
iter = 5 # 迭代3次，每次输出一个batch个
labels_nums = len(labels_set)
batch = get_data_batch(file_list,
labels_nums=14,
batch_size=6,
shuffle=False,
one_hot=False)
for i in range(iter):
print('**************************')
batch_indexMat, batch_labels = get_next_batch(batch)
# 解码：将索引矩阵解码为字词
# word2vec_path = 'out/trained_word2vec.model'
w2vModel = create_word2vec.load_wordVectors(word2vec_path)
# batch_indexMat = create_word2vec.indexMat2vector_lookup(w2vModel, batch_indexMat)
#
batch_indexMat = create_word2vec.indexMat2word(w2vModel,
batch_indexMat)
batch_indexMat = np.asarray(batch_indexMat)
# 解码：将int类型的labels解码为字符串类型的labels
batch_labels = batch_labels.flatten().tolist()
batch_labels = files_processing.labels_decoding(
batch_labels, labels_set)
# print('batch_images:shape:{}\n{}'.format(batch_indexMat.shape,batch_indexMat))
print('batch_images:\n{}'.format(batch_indexMat))
print('batch_labels:\n{}'.format(batch_labels))
def train(train_dir, val_dir, labels_file, word2vec_path, batch_size,
max_steps, log_step, val_step, snapshot, out_dir):
'''
训练...
:param train_dir: 训练数据目录
:param val_dir: val数据目录
:param labels_file: labels文件目录
:param word2vec_path: 词向量模型文件
:param batch_size: batch size
:param max_steps: 最大迭代次数
:param log_step: log显示间隔
:param val_step: 测试间隔
:param snapshot: 保存模型间隔
:param out_dir: 模型ckpt和summaries输出的目录
:return:
'''
max_sentence_length = 300
embedding_dim = 50
filter_sizes = [3, 4, 5, 6]
num_filters = 200 # Number of filters per filter size
base_lr = 0.001 # 学习率
dropout_keep_prob = 0.5
l2_reg_lambda = 0.0 # "L2 regularization lambda (default: 0.0)
allow_soft_placement = True # 如果你指定的设备不存在，允许TF自动分配设备
log_device_placement = False # 是否打印设备分配日志
print("Loading data...")
w2vModel = create_word2vec.load_wordVectors(word2vec_path)
labels_set = files_processing.read_txt(labels_file)
labels_nums = len(labels_set)
train_file_list = create_batch_data.get_file_list(file_dir=train_dir,
postfix='*.npy')
train_batch = create_batch_data.get_data_batch(train_file_list,
labels_nums=labels_nums,
batch_size=batch_size,
shuffle=False,
one_hot=True)
val_file_list = create_batch_data.get_file_list(file_dir=val_dir,
postfix='*.npy')
val_batch = create_batch_data.get_data_batch(val_file_list,
labels_nums=labels_nums,
batch_size=batch_size,
shuffle=False,
one_hot=True)
print("train data info *****************************")
train_nums = create_word2vec.info_npy(train_file_list)
print("val data info *****************************")
val_nums = create_word2vec.info_npy(val_file_list)
print("labels_set info *****************************")
files_processing.info_labels_set(labels_set)
# Training
with tf.Graph().as_default():
session_conf = tf.ConfigProto(
allow_soft_placement=allow_soft_placement,
log_device_placement=log_device_placement)
sess = tf.Session(config=session_conf)
with sess.as_default():
cnn = TextCNN(sequence_length=max_sentence_length,
num_classes=labels_nums,
embedding_size=embedding_dim,
filter_sizes=filter_sizes,
num_filters=num_filters,
l2_reg_lambda=l2_reg_lambda)
# Define Training procedure
global_step = tf.Variable(0, name="global_step", trainable=False)
optimizer = tf.train.AdamOptimizer(learning_rate=base_lr)
# optimizer = tf.train.MomentumOptimizer(learning_rate=0.01, momentum=0.9)
grads_and_vars = optimizer.compute_gradients(cnn.loss)
train_op = optimizer.apply_gradients(grads_and_vars,
global_step=global_step)
# Keep track of gradient values and sparsity (optional)
grad_summaries = []
for g, v in grads_and_vars:
if g is not None:
grad_hist_summary = tf.summary.histogram(
"{}/grad/hist".format(v.name), g)
sparsity_summary = tf.summary.scalar(
"{}/grad/sparsity".format(v.name),
tf.nn.zero_fraction(g))
grad_summaries.append(grad_hist_summary)
grad_summaries.append(sparsity_summary)
grad_summaries_merged = tf.summary.merge(grad_summaries)
# Output directory for models and summaries
print("Writing to {}\n".format(out_dir))
# Summaries for loss and accuracy
loss_summary = tf.summary.scalar("loss", cnn.loss)
acc_summary = tf.summary.scalar("accuracy", cnn.accuracy)
# Train Summaries
train_summary_op = tf.summary.merge(
[loss_summary, acc_summary, grad_summaries_merged])
train_summary_dir = os.path.join(out_dir, "summaries", "train")
train_summary_writer = tf.summary.FileWriter(
train_summary_dir, sess.graph)
# Dev summaries
dev_summary_op = tf.summary.merge([loss_summary, acc_summary])
dev_summary_dir = os.path.join(out_dir, "summaries", "dev")
dev_summary_writer = tf.summary.FileWriter(dev_summary_dir,
sess.graph)
# Checkpoint directory. Tensorflow assumes this directory already exists so we need to create it
checkpoint_dir = os.path.abspath(
os.path.join(out_dir, "checkpoints"))
checkpoint_prefix = os.path.join(checkpoint_dir, "model")
if not os.path.exists(checkpoint_dir):
os.makedirs(checkpoint_dir)
saver = tf.train.Saver(tf.global_variables(), max_to_keep=3)
# Initialize all variables
sess.run(tf.global_variables_initializer())
def train_step(x_batch, y_batch):
"""
A single training step
"""
feed_dict = {
cnn.input_x: x_batch,
cnn.input_y: y_batch,
cnn.dropout_keep_prob: dropout_keep_prob
}
_, step, summaries, loss, accuracy = sess.run([
train_op, global_step, train_summary_op, cnn.loss,
cnn.accuracy
], feed_dict)
if step % log_step == 0:
print("training: step {}, loss {:g}, acc {:g}".format(
step, loss, accuracy))
train_summary_writer.add_summary(summaries, step)
def dev_step(x_batch, y_batch, writer=None):
"""
Evaluates model on a dev set
"""
feed_dict = {
cnn.input_x: x_batch,
cnn.input_y: y_batch,
cnn.dropout_keep_prob: 1.0
}
step, summaries, loss, accuracy = sess.run(
[global_step, dev_summary_op, cnn.loss, cnn.accuracy],
feed_dict)
if writer:
writer.add_summary(summaries, step)
return loss, accuracy
for i in range(max_steps):
train_batch_data, train_batch_label = create_batch_data.get_next_batch(
train_batch)
train_batch_data = create_word2vec.indexMat2vector_lookup(
w2vModel, train_batch_data)
train_step(train_batch_data, train_batch_label)
current_step = tf.train.global_step(sess, global_step)
if current_step % val_step == 0:
val_losses = []
val_accs = []
# for k in range(int(val_nums/batch_size)):
for k in range(100):
val_batch_data, val_batch_label = create_batch_data.get_next_batch(
val_batch)
val_batch_data = create_word2vec.indexMat2vector_lookup(
w2vModel, val_batch_data)
val_loss, val_acc = dev_step(val_batch_data,
val_batch_label,
writer=dev_summary_writer)
val_losses.append(val_loss)
val_accs.append(val_acc)
mean_loss = np.array(val_losses, dtype=np.float32).mean()
mean_acc = np.array(val_accs, dtype=np.float32).mean()
print("--------Evaluation:step {}, loss {:g}, acc {:g}".
format(current_step, mean_loss, mean_acc))
if current_step % snapshot == 0:
path = saver.save(sess,
checkpoint_prefix,
global_step=current_step)
print("Saved model checkpoint to {}\n".format(path))
def batch_predict(val_dir, labels_file, models_path, word2vec_path,
batch_size):
'''
预测...
:param val_dir: val数据目录
:param labels_file: labels文件目录
:param models_path: 模型文件
:param word2vec_path: 词向量模型文件
:param batch_size: batch size
:return:
'''
max_sentence_length = 300
embedding_dim = 128
filter_sizes = [3, 4, 5, 6]
num_filters = 200 # Number of filters per filter size
l2_reg_lambda = 0.0 # "L2 regularization lambda (default: 0.0)
print("Loading data...")
w2vModel = create_word2vec.load_wordVectors(word2vec_path)
labels_set = files_processing.read_txt(labels_file)
labels_nums = len(labels_set)
val_file_list = create_batch_data.get_file_list(file_dir=val_dir,
postfix='*.npy')
val_batch = create_batch_data.get_data_batch(val_file_list,
labels_nums=labels_nums,
batch_size=batch_size,
shuffle=False,
one_hot=True)
print("val data info *****************************")
val_nums = create_word2vec.info_npy(val_file_list)
print("labels_set info *****************************")
files_processing.info_labels_set(labels_set)
# Training
with tf.Graph().as_default():
sess = tf.Session()
with sess.as_default():
cnn = TextCNN(sequence_length=max_sentence_length,
num_classes=labels_nums,
embedding_size=embedding_dim,
filter_sizes=filter_sizes,
num_filters=num_filters,
l2_reg_lambda=l2_reg_lambda)
# Initialize all variables
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
saver.restore(sess, models_path)
def dev_step(x_batch, y_batch):
"""
Evaluates model on a dev set
"""
feed_dict = {
cnn.input_x: x_batch,
cnn.input_y: y_batch,
cnn.dropout_keep_prob: 1.0
}
loss, accuracy = sess.run([cnn.loss, cnn.accuracy], feed_dict)
return loss, accuracy
val_losses = []
val_accs = []
for k in range(int(val_nums / batch_size)):
# for k in range(int(10)):
val_batch_data, val_batch_label = create_batch_data.get_next_batch(
val_batch)
val_batch_data = create_word2vec.indexMat2vector_lookup(
w2vModel, val_batch_data)
val_loss, val_acc = dev_step(val_batch_data, val_batch_label)
val_losses.append(val_loss)
val_accs.append(val_acc)
print("--------Evaluation:step {}, loss {:g}, acc {:g}".format(
k, val_loss, val_acc))
mean_loss = np.array(val_losses, dtype=np.float32).mean()
mean_acc = np.array(val_accs, dtype=np.float32).mean()
print("--------Evaluation:step {}, mean loss {:g}, mean acc {:g}".
format(k, mean_loss, mean_acc))
def main(dimen):
# Data preprocess
labels_file = '.\\data\\THUCNews_labels.txt'
word2vec_path = "D:\\pypro\\bs\\model\\size50.model"
max_steps = 10000 # 迭代次数
batch_size = 128
out_dir = ".\\models" # 模型ckpt和summaries输出的目录
train_dir = '.\\data\\train_data'
val_dir = '.\\data\\val_data'
'''
train(train_dir=train_dir,
val_dir=val_dir,
labels_file=labels_file,
word2vec_path=word2vec_path,
batch_size=batch_size,
max_steps=max_steps,
log_step=50,
val_step=500,
snapshot=1000,
out_dir=out_dir)
'''
model_dir = '.\\models\\checkpoints'
saver = tf.train.import_meta_graph(model_dir+'\\model-40000.meta')
graph = tf.get_default_graph()
tensor_name_list = [tensor.name for tensor in graph.as_graph_def().node]
x = graph.get_tensor_by_name('input_x:0')
y = graph.get_tensor_by_name('input_y:0')
keep_prob = graph.get_tensor_by_name('dropout_keep_prob:0')
scores = graph.get_tensor_by_name('output/scores:0')
accuracy = graph.get_tensor_by_name('accuracy/accuracy:0')
with tf.Session() as sess:
saver.restore(sess,tf.train.latest_checkpoint(model_dir))
print('加载成功！')
labels_set = files_processing.read_txt(labels_file)
labels_nums = len(labels_set)
val_file_list = create_batch_data.get_file_list(file_dir=val_dir, postfix='*.npy')
val_batch = create_batch_data.get_data_batch(val_file_list, labels_nums=labels_nums, batch_size=batch_size,
shuffle=False, one_hot=True)
w2vModel = create_word2vec.load_wordVectors(word2vec_path)
dev_summary_dir = os.path.join(out_dir, "summaries", "dev")
dev_summary_writer = tf.summary.FileWriter(dev_summary_dir, sess.graph)
val_losses = []
val_accs = []
for k in range(100):
val_batch_data, val_batch_label = create_batch_data.get_next_batch(val_batch)
val_batch_data = create_word2vec.indexMat2vector_lookup(w2vModel, val_batch_data)
for i in val_batch_data:
for j in i:
j[dimen]=0
'''
for d in range(dimen):
j[index[d]]=0
'''
#print('val_batch_data是：', type(val_batch_data),val_batch_data[0].shape, val_batch_data[0],len(val_batch_data[0]))
feed_dict = {
x: val_batch_data,
y: val_batch_label,
keep_prob: 1.0
}
losses = tf.nn.softmax_cross_entropy_with_logits(logits=scores, labels=y)
loss = tf.reduce_mean(losses)
val_loss = sess.run(loss, feed_dict)
val_acc = sess.run(accuracy,feed_dict)
#print('val_loss:',val_loss,'val_acc:',val_acc)
val_losses.append(val_loss)
val_accs.append(val_acc)
mean_loss = np.array(val_losses, dtype=np.float32).mean()
mean_acc = np.array(val_accs, dtype=np.float32).mean()
nowTime = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print(dimen,"--------Evaluation: loss {:g}, acc {:g}".format( mean_loss, mean_acc),nowTime)
return mean_acc, mean_loss
def text_predict(files_list, labels_file, models_path, word2vec_path,
batch_size):
'''
预测...
:param val_dir: val数据目录
:param labels_file: labels文件目录
:param models_path: 模型文件
:param word2vec_path: 词向量模型文件
:param batch_size: batch size
:return:
'''
max_sentence_length = 300
embedding_dim = 128
filter_sizes = [3, 4, 5, 6]
num_filters = 200 # Number of filters per filter size
l2_reg_lambda = 0.0 # "L2 regularization lambda (default: 0.0)
print("Loading data...")
w2vModel = create_word2vec.load_wordVectors(word2vec_path)
labels_set = files_processing.read_txt(labels_file)
labels_nums = len(labels_set)
sample_num = len(files_list)
labels_list = [-1]
labels_list = labels_list * sample_num
with tf.Graph().as_default():
sess = tf.Session()
with sess.as_default():
cnn = TextCNN(sequence_length=max_sentence_length,
num_classes=labels_nums,
embedding_size=embedding_dim,
filter_sizes=filter_sizes,
num_filters=num_filters,
l2_reg_lambda=l2_reg_lambda)
# Initialize all variables
sess.run(tf.global_variables_initializer())
saver = tf.train.Saver()
saver.restore(sess, models_path)
def pred_step(x_batch):
"""
predictions model on a dev set
"""
feed_dict = {cnn.input_x: x_batch, cnn.dropout_keep_prob: 1.0}
pred = sess.run([cnn.predictions], feed_dict)
return pred
batchNum = int(math.ceil(1.0 * sample_num / batch_size))
for i in range(batchNum):
start = i * batch_size
end = min((i + 1) * batch_size, sample_num)
batch_files = files_list[start:end]
# 读取文件内容，字词分割
batch_content = files_processing.read_files_list_to_segment(
batch_files, max_sentence_length, padding_token='<PAD>')
# [1]将字词转为索引矩阵,再映射为词向量
batch_indexMat = create_word2vec.word2indexMat(
w2vModel, batch_content, max_sentence_length)
val_batch_data = create_word2vec.indexMat2vector_lookup(
w2vModel, batch_indexMat)
# [2]直接将字词映射为词向量
# val_batch_data = create_word2vec.word2vector_lookup(w2vModel,batch_content)
pred = pred_step(val_batch_data)
pred = pred[0].tolist()
pred = files_processing.labels_decoding(pred, labels_set)
for k, file in enumerate(batch_files):
print("{}, pred:{}".format(file, pred[k]))