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text_cnn_entity_wy2.py
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text_cnn_entity_wy2.py
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import tensorflow as tf
import numpy as np
import os,sys
BASEDIR = os.path.dirname(os.path.abspath(__file__))
sys.path.append(BASEDIR)
from configure import FLAGS
from transformer import multihead_attention, feedforward, attention,attention_4
from attention import attention_entity
class TextCNN:
def __init__(self, sequence_length, num_classes,pos_vocab_size,pos_embedding_size,
text_embedding_size,filter_sizes, num_heads, num_filters, l2_reg_lambda=0.0):
# Placeholders for input, output and dropout
self.text_embedded_chars = tf.placeholder(tf.float32, shape=[None, sequence_length, 768], name='text_embedded_chars')
# self.input_p1 = tf.placeholder(tf.int32, shape=[None, sequence_length], name='input_p1')
# self.input_p2 = tf.placeholder(tf.int32, shape=[None, sequence_length], name='input_p2')
# self.e1_start = tf.placeholder(tf.int32, shape=[None], name="e1_start")
# self.e1_end = tf.placeholder(tf.int32, shape=[None], name="e1_end")
self.e1_embeded = tf.placeholder(tf.float32, shape=[None, 768], name="e1_embedding")
self.e2_embeded = tf.placeholder(tf.float32, shape=[None, 768], name="e2_embedding")
self.input_pos = tf.placeholder(tf.int32, shape=[None, sequence_length], name='input_pos')
self.input_y = tf.placeholder(tf.float32, shape=[None, num_classes], name='input_y') #[20 19]
self.dropout_keep_prob = tf.placeholder(tf.float32, name='dropout_keep_prob')
self.emb_dropout_keep_prob = tf.placeholder(tf.float32, name='emb_dropout_keep_prob')
initializer = tf.keras.initializers.glorot_normal
# Embedding layer
# with tf.device('/device:GPU:0'), tf.variable_scope("text-embedding"):
# # self.W_text = tf.Variable(tf.random_uniform([text_vocab_size, text_embedding_size], -0.25, 0.25), name="W_text")
# # self.text_embedded_chars = tf.nn.embedding_lookup(self.W_text, self.input_text) #[800 90 300]
# # self.text_embedded_chars = server_bert.get_sentence_embedding(self.input_text) #[800 90 768]
# # self.text_embedded_chars_trans = transformer.transformerencoder(self.text_embedded_chars)
# self.text_embedded_chars_change = tf.layers.dense(self.text_embedded_chars, units=300,activation=tf.nn.relu,use_bias=True, trainable=True) #[800 90 300]
# print("change:",self.text_embedded_chars_change.get_shape())# (?, 90, 300)
# self.text_embedded_chars_expanded = tf.expand_dims(self.text_embedded_chars_change, -1) #[800 90 300 1]
# print(self.text_embedded_chars_expanded.get_shape())
with tf.variable_scope("pos-embedding"):
self.W_pos = tf.get_variable("W_pos", [pos_vocab_size, pos_embedding_size], initializer=initializer())
self.pos_embedded_chars = tf.nn.embedding_lookup(self.W_pos, self.input_pos)
# self.p2_embedded_chars = tf.nn.embedding_lookup(self.W_pos, self.input_p2)
self.pos_embedded_chars_expanded = tf.expand_dims(self.pos_embedded_chars, -1) #[800 90 50 1]
# self.p2_embedded_chars_expanded = tf.expand_dims(self.p2_embedded_chars, -1)
# self.embedded_chars_expanded = tf.concat([self.text_embedded_chars_expanded,
# self.p1_embedded_chars_expanded,
# self.p2_embedded_chars_expanded], 2) #[800 90 400 1]
_embedding_size = 768
self.text_shape=tf.shape(self.text_embedded_chars)
# self.text_expand_shape=tf.shape(self.text_embedded_chars_expanded)
# self.pos_expand_shape=tf.shape(self.p1_embedded_chars_expanded)
# self.embedd_shape=tf.shape(self.text_embedded_chars_change)
# self.embedding_size_shape=tf.shape(_embedding_size)
# self.text_expand_shape=tf.shape(self.text_embedded_chars_expanded)
# self.pos_expand_shape=tf.shape(self.p1_embedded_chars_expanded)
# self.embedd_shape=tf.shape(self.text_embedded_chars_change)
# self.embedding_size_shape=tf.shape(_embedding_size)
# self.e1_embeded_dense = tf.nn.tanh(self.e1_embeded)
# self.e2_embeded_dense = tf.nn.tanh(self.e2_embeded )
self.e1_embeded_2 = tf.expand_dims(self.e1_embeded, axis=1)
print(self.e1_embeded.get_shape())
self.e2_embeded_2 = tf.expand_dims(self.e2_embeded, axis=1)
# self.e1_embeded_2 = tf.reshape(tf.tile(self.e1_embeded, [1, sequence_length]), [-1, sequence_length, 768])
# self.e2_embeded_2 = tf.reshape(tf.tile(self.e2_embeded, [1, sequence_length]), [-1, sequence_length, 768])
self.text_embedded_chars_2 = tf.concat([self.text_embedded_chars,self.e1_embeded_2, self.e2_embeded_2], axis=1)
print("embedded_char_dim",self.text_embedded_chars_2.get_shape())
# e1_h = tf.reshape(tf.tile(self.e1_embeded, [1, sequence_length]), [-1, sequence_length, 768])
# e2_h = tf.reshape(tf.tile(self.e2_embeded, [1, sequence_length]), [-1, sequence_length, 768])
# self.text_embedded_chars1 = tf.add(self.text_embedded_chars,self.e1_embeded_2)
# self.text_embedded_chars_2 = tf.add(self.text_embedded_chars1,self.e2_embeded_2)
# self.text_embedded_chars_dense = tf.layers.dense(self.text_embedded_chars_2, units=768, activation=tf.nn.relu)
# self.text_embedded_chars_dense = tf.layers.dense(tf.nn.relu(self.text_embedded_chars_2), units=768)
# print(self.text_embedded_chars_2.get_shape())
#entity-aware
# Dropout for Word Embedding
with tf.variable_scope('dropout-embeddings'):
# self.embedded_chars_expanded = tf.concat([self.text_embedded_chars, self.pos_embedded_chars], 2)
self.embedded_chars= tf.nn.dropout(self.text_embedded_chars_2, self.emb_dropout_keep_prob)
# self.e1_embeded = tf.nn.dropout(self.e1_embeded, self.emb_dropout_keep_prob)
# self.e2_embeded = tf.nn.dropout(self.e2_embeded, self.emb_dropout_keep_prob)
# alpha = attention_2(self.embedded_chars, self.e1_embeded, self.e2_embeded)
# self.embedded_chars = tf.multiply(self.embedded_chars_2, tf.expand_dims(alpha, -1))
# self.embedded_chars= tf.contrib.layers.layer_norm(self.embedded_chars_3 + self.embedded_chars_2)
# self.embedded_chars_expanded = tf.concat([self.embedded_chars, self.pos_embedded_chars], 2)
# self-attention
# with tf.variable_scope("self-attention"):
# self.self_attn_output, self.self_alphas = multihead_attention(self.embedded_chars, self.embedded_chars,
# num_units=768, num_heads=num_heads)
# # print("attention shape:", self.self_attn.get_shape) #(?, 90 ,300)
# # self.fnn_output = fnn(self.self_attn_output)
# self.self_attn = tf.layers.dense(self.self_attn_output, units=300,
# activation=tf.nn.relu, use_bias=True,
# trainable=True, kernel_initializer=initializer()) # [800 90 300]
dim_model = 768
dim_ff = 3072
num_stack = 1
##transformer
for i in range(num_stack):
with tf.variable_scope("block-{}".format(i)):
# Multi-head Attention (self attention)
with tf.variable_scope("multihead-attention"):
self.mh = multihead_attention(query=self.embedded_chars, key=self.embedded_chars, value=self.embedded_chars,
dim_model=dim_model, num_head=num_heads)
# Residual & Layer Normalization
self.mh = tf.contrib.layers.layer_norm(self.embedded_chars + self.mh)
# Position-wise Feed Forward
with tf.variable_scope("position-wise-feed-forward"):
self.ff = feedforward(self.mh, dim_model, dim_ff)
# Residual & Layer Normalization
self.enc = tf.contrib.layers.layer_norm(self.mh + self.ff)
# alpha = attention(self.enc)
# self.batch_size = tf.shape(self.enc)[0]
# print(self.batch_size)
# e1_embedd = tf.reduce_sum(self.enc[0][self.e1_start[0]:self.e1_end[0]], axis=0)
# print(self.enc.shape[0].value)
# print(tf.size(self.enc).eval())
# for i in range(1, tf.shape(self.enc)[0].eval()):
# e1 = tf.reduce_sum(self.enc[i][self.e1_start[i]:self.e1_end[i] + 1], axis=0)
# # print("e1 shape",e1.shape)
# # e2 = np.mean(text_embedded_chars[i][train_be2_start[i]:train_be2_end[i] + 1], axis=0)
# e1_embedd = np.vstack((e1_embedd, e1))
# # e2_embedd = np.vstack((e2_embedd, e2))
# print(e1_embedd.get_shape())
# print(e1_embedd.shape)
# e2_embedd = np.mean(text_embedded_chars[0][train_be2_start[0]:train_be2_end[0] + 1], axis=0)
# for i in range(1, text_embedded_chars.shape[0]):
# e1 = np.mean(text_embedded_chars[i][train_be1_start[i]:train_be1_end[i] + 1], axis=0)
# # print("e1 shape",e1.shape)
# e2 = np.mean(text_embedded_chars[i][train_be2_start[i]:train_be2_end[i] + 1], axis=0)
# e1_embedd = np.vstack((e1_embedd, e1))
# e2_embedd = np.vstack((e2_embedd, e2))
# self.enc_expand = tf.expand_dims(self.enc, axis=-1)
# self.smp = tf.nn.max_pool(value=self.enc_expand, ksize=[1, 1, 2, 1], strides=[1, 1, 2, 1],
# padding='SAME')
# self.self_attn = tf.layers.dense(self.enc, units=300,
# activation=tf.nn.relu, use_bias=True,
# trainable=True, kernel_initializer=initializer()) # [800 90 300]
# self.enc_change = tf.layers.conv1d(inputs=self.enc, filters=300, kernel_size=1, activation=tf.nn.relu,
# kernel_initializer=initializer())
# print("change:", self.enc.get_shape()) # (?, 90, 300)
# self.text_embedded_chars_2 = tf.concat([self.enc, self.e1_embeded_2, self.e2_embeded_2], axis=1)
# self.e1_embeded_dense = tf.layers.dense(self.e1_embeded, units=128, activation=tf.nn.tanh,
# kernel_initializer=initializer())
# self.e2_embeded_dense = tf.layers.dense(self.e2_embeded, units=128, activation=tf.nn.tanh,
# kernel_initializer=initializer())
# self.embeded_dense = tf.layers.dense(self.enc, units=128, activation=tf.nn.tanh,
# kernel_initializer=initializer())
# # e1_output,e2_output = attention_entity(self.embeded_dense, self.e1_embeded_dense, self.e2_embeded_dense)
output = attention_4( self.enc, self.e1_embeded, self.e2_embeded)
output_dense = tf.layers.dense(output,units=128, activation=tf.nn.tanh)
self.self_atten_change =tf.expand_dims(self.enc, -1) #[800 90 300 1]
# i=0
# n = tf.shape(self.enc)[0]
# def cond(i,n):
# return i<n
# def body(i,n):
# e1 =
# tf.while_loop
# self.enc_attention = tf.multiply(self.enc, tf.expand_dims(alpha, -1))
# print(self.enc_attention.get_shape())
# self.self_atten_change = tf.expand_dims(self.enc_attention, -1)
# Create a convolution + maxpool layer for each filter size
pooled_outputs = []
for i, filter_size in enumerate(filter_sizes):
with tf.variable_scope("conv-maxpool-%s" % filter_size):
# Convolution Layer
conv = tf.layers.conv2d(self.self_atten_change, num_filters, [filter_size, _embedding_size],
kernel_initializer=initializer(), activation=tf.nn.relu, padding="SAME",
strides=(1, _embedding_size),
name="conv") # num_filter=128,filter_size=2,3,4,5
print(conv.get_shape()) # (?,89,1, 128);(?88,1,128)(?87,1,128)(?86 1 128)
# R = tf.squeeze(conv,axis=-2)
# print(R.get_shape())
# Maxpooling over the outputs
pooled = tf.nn.max_pool(conv, ksize=[1, sequence_length+2, 1, 1],
strides=[1, sequence_length+2, 1, 1], padding='SAME', name="pool")
print(pooled.get_shape()) # (?, 1, 1, 128)
print(pooled.get_shape()) # (?, 1, 1, 128)
pooled_outputs.append(pooled)
# Combine all the pooled features
num_filters_total = num_filters * len(filter_sizes)
# print(pooled_outputs.get_shape())
print(np.array(pooled_outputs).shape) #（4，）
self.h_pool = tf.concat(pooled_outputs, 3)
# print(self.h_pool.get_shape()) #(?,1,1,512)
self.h_pool_flat = tf.reshape(self.h_pool, [-1, num_filters_total])
# print(self.h_pool_flat.get_shape())#(?,512)
self.h_pool_flat_2 = tf.concat([self.h_pool_flat,output_dense], axis=-1)
# print(self.h_pool_flat_2.get_shape())
# Add dropout
with tf.variable_scope("dropout"):
self.h_drop = tf.nn.dropout(self.h_pool_flat_2, self.dropout_keep_prob)
print("h_drop:",self.h_drop.get_shape())
# Final scores and predictions
with tf.variable_scope("output"):
self.logits = tf.layers.dense(self.h_drop, num_classes, kernel_initializer=initializer())
print(self.logits.get_shape()) #(?,19)
self.predictions = tf.argmax(self.logits, 1, name="predictions")
# Calculate mean cross-entropy loss
with tf.variable_scope("loss"):
losses = tf.nn.softmax_cross_entropy_with_logits_v2(logits=self.logits, labels=self.input_y)
self.l2 = tf.add_n([tf.nn.l2_loss(v) for v in tf.trainable_variables()])
self.loss = tf.reduce_mean(losses) + l2_reg_lambda * self.l2
# Accuracy
with tf.name_scope("accuracy"):
correct_predictions = tf.equal(self.predictions, tf.argmax(self.input_y, 1))
self.accuracy = tf.reduce_mean(tf.cast(correct_predictions, tf.float32), name="accuracy")