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huffman_tweet_v2.py
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huffman_tweet_v2.py
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# coding:utf-8
import tensorflow as tf
import sys
import numpy as np
import os
import random
import collections
import Config_tweet as Config
import Model
import Huffman_Encoding
bit_num = sys.argv[1]
bit_num = np.int32(bit_num)
index = sys.argv[2]
os.environ["CUDA_VISIBLE_DEVICES"] = "0"
config_tf = tf.ConfigProto()
config_tf.gpu_options.allow_growth = True
config_tf.inter_op_parallelism_threads = 1
config_tf.intra_op_parallelism_threads = 1
config = Config.Config()
file = 'data/tweet.txt'
word_all = []
data = open(file, 'r').readlines()
for line in range(len(data)):
data_line = data[line]
line_words = data_line.split(' ')
for word in line_words:
word_all.append(word)
words = list(set(word_all)) # char vocabulary
data_size, _vocab_size = len(word_all), len(words)
print 'data has %d words, %d unique.' % (data_size, _vocab_size)
word_to_idx = {wo: i for i, wo in enumerate(words)}
idx_to_word = {i: wo for i, wo in enumerate(words)}
idx_unknown = word_to_idx['unknown']
config.vocab_size = len(word_to_idx)
len_of_generation = config.len_of_generation
def pro_start_word(statistics1):
sel_word_sta = []
sel_value_sta = []
for i in range(100):
k = statistics1[i]
key = k[0]
value = k[1]
sel_word_sta.append(key)
sel_value_sta.append(value)
sel_value_sta = np.array(sel_value_sta)
sel_value_sta = sel_value_sta/float(sum(sel_value_sta))
start = np.random.choice(sel_word_sta, 1, p=sel_value_sta)
start_word = start[0]
while not start_word.islower():
start = np.random.choice(sel_word_sta, 1, p=sel_value_sta)
start_word = start[0]
return start_word
def run_epoch(session, m, data, eval_op, state=None):
"""Runs the model on the given data."""
x = data.reshape((1, 1))
prob, _state, _ = session.run([m._prob, m.final_state, eval_op], {m.input_data: x, m.initial_state: state})
return prob, _state
def main(_):
os.makedirs('generate/tweet', exist_ok=True)
with tf.Graph().as_default(), tf.Session(config=config_tf) as session:
config.batch_size = 1
config.num_steps = 1
initializer = tf.random_uniform_initializer(-config.init_scale, config.init_scale)
with tf.variable_scope("model", reuse=None, initializer=initializer):
mtest = Model.Model(is_training=False, config=config)
model_saver = tf.train.Saver()
print 'model loading ...'
model_saver.restore(session, config.model_path+'-70')
print 'Done!'
start_words = []
data = open('data/tweet.txt', 'r').readlines()
for i in range(len(data)):
line_ste = data[i].strip()
line_ste = line_ste.split(' ')
start_word = line_ste[0]
start_words.append(start_word)
statistics = collections.Counter(start_words)
statistics1 = sorted(statistics.items(), key=lambda item: item[1], reverse=True)
bit_stream = open('./bit_stream/bit_stream.txt', 'r').readline()
outfile = open('./generate/tweet/tweet_' + str(bit_num) + 'bit' + '_' + index + '.txt', 'w')
bitfile = open('./generate/tweet/tweet_' + str(bit_num) + 'bit' + '_' + index + '.bit', 'w')
bit_index = random.randint(0, 30000)
count = 0
while count < 100:
start_word = pro_start_word(statistics1)
if start_word == 'unknown':
continue
start_idx = word_to_idx[start_word]
_state = mtest.initial_state.eval()
test_data = np.int32([start_idx])
prob, _state = run_epoch(session, mtest, test_data, tf.no_op(), _state)
gen_res = [start_word]
gen = word_to_idx['unknown']
while gen == word_to_idx['unknown']:
gen = np.random.choice(config.vocab_size, 1, p=prob.reshape(-1))
gen = gen[0]
# the second word is chose randomly
test_data = np.int32(gen)
gen_res.append(idx_to_word[gen])
bit = ""
for i in range(len_of_generation - 2):
if idx_to_word[gen] in ['\n', '']:
break
prob, _state = run_epoch(session, mtest, test_data, tf.no_op(), _state)
p = prob.reshape(-1)
p[idx_unknown] = 0
prob_sort = sorted(p)
prob_sort.reverse()
word_prob = [prob_sort[i] for i in range(2**int(bit_num))]
# TODO review2
# words_prob = []
# while len(words_prob) < 2 ** int(bit_num):
# ind = np.random.choice(list(range(len(p))), p=p / p.sum())
# if (ind, p[ind]) not in words_prob:
# words_prob.append((ind, p[ind]))
p = p.tolist()
words_prob = [(p.index(word_prob[i]), word_prob[i]) for i in range(2**int(bit_num))]
nodes = Huffman_Encoding.createNodes([item[1] for item in words_prob])
root = Huffman_Encoding.createHuffmanTree(nodes)
codes = Huffman_Encoding.huffmanEncoding(nodes, root)
for b in range(2**int(bit_num)):
if bit_stream[bit_index:bit_index+b+1] in codes:
code_index = codes.index(bit_stream[bit_index:bit_index+b+1])
gen = words_prob[code_index][0]
test_data = np.int32(gen)
gen_res.append(idx_to_word[gen])
if idx_to_word[gen] in ['\n', '']:
break
bit += bit_stream[bit_index: bit_index+b+1]
bit_index = bit_index+b+1
break
if len(gen_res) < 5:
continue
gen_sen = ' '.join([word for word in gen_res if word not in ["\n", ""]])
count = count + 1
outfile.write(gen_sen+"\n")
bitfile.write(bit)
if __name__ == "__main__":
tf.app.run()