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大小: 51.25MB文件类型: .zip金币: 1下载: 0 次发布日期: 2023-07-19
- 语言: Python
- 标签:
资源简介
对四种句子/文本相似度计算方法进行实验与比较
代码片段和文件信息
#encoding:utf-8
from __future__ import absolute_import
import jieba
import time
from scipy import spatial
import numpy as np
from Utils.load_data import *
file_voc=‘./data/voc.txt‘
file_idf=‘./data/idf.txt‘
file_userdict=‘./data/medfw.txt‘
class SSIM(object):
def __init__(self):
t1 = time.time()
self.voc=load_voc(file_voc)
print(“Loading word2vec vector cost %.3f seconds...\n“ % (time.time() - t1))
t1 = time.time()
self.idf=load_idf(file_idf)
print(“Loading idf data cost %.3f seconds...\n“ % (time.time() - t1))
jieba.load_userdict(file_userdict)
def M_cosine(selfs1s2):
s1_list=jieba.lcut(s1)
s2_list=jieba.lcut(s2)
v1=np.array([self.voc[s] for s in s1_list if s in self.voc])
v2=np.array([self.voc[s] for s in s2_list if s in self.voc])
v1=v1.sum(axis=0)
v2=v2.sum(axis=0)
sim=1-spatial.distance.cosine(v1v2)
return sim
def M_idf(selfs1 s2):
v1 v2 = [] []
s1_list = jieba.lcut(s1)
s2_list = jieba.lcut(s2)
for s in s1_list:
idf_v = self.idf.get(s 1)
if s in self.voc:
v1.append(1.0 * idf_v * self.voc[s])
for s in s2_list:
idf_v = self.idf.get(s 1)
if s in self.voc:
v2.append(1.0 * idf_v * self.voc[s])
v1 = np.array(v1).sum(axis=0)
v2 = np.array(v2).sum(axis=0)
sim = 1 - spatial.distance.cosine(v1 v2)
return sim
def M_bm25(selfs1 s2 s_avg=10 k1=2.0 b=0.75):
bm25 = 0
s1_list = jieba.lcut(s1)
for w in s1_list:
idf_s = self.idf.get(w 1)
bm25_ra = s2.count(w) * (k1 + 1)
bm25_rb = s2.count(w) + k1 * (1 - b + b * len(s2) / s_avg)
bm25 += idf_s * (bm25_ra / bm25_rb)
return bm25
def M_jaccard(selfs1 s2):
s1 = set(s1)
s2 = set(s2)
ret1 = s1.intersection(s2)
ret2 = s1.union(s2)
jaccard = 1.0 * len(ret1)/ len(ret2)
return jaccard
def ssim(selfs1s2model=‘cosine‘):
if model==‘idf‘:
f_ssim=self.M_idf
elif model==‘bm25‘:
f_ssim=self.M_bm25
elif model==‘jaccard‘:
f_ssim=self.M_jaccard
else:
f_ssim = self.M_cosine
sim=f_ssim(s1s2)
return sim
sm=SSIM()
ssim=sm.ssim
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2018-07-13 09:01 sentence-similarity-master\
文件 1203 2018-07-13 09:01 sentence-similarity-master\.gitignore
文件 1063 2018-07-13 09:01 sentence-similarity-master\LICENSE
文件 2127 2018-07-13 09:01 sentence-similarity-master\README.md
目录 0 2018-07-13 09:01 sentence-similarity-master\Utils\
文件 1682 2018-07-13 09:01 sentence-similarity-master\Utils\compute_idf.py
文件 741 2018-07-13 09:01 sentence-similarity-master\Utils\get_sentence.py
文件 629 2018-07-13 09:01 sentence-similarity-master\Utils\load_data.py
文件 1346 2018-07-13 09:01 sentence-similarity-master\Utils\train_word2vec.py
目录 0 2018-07-13 09:01 sentence-similarity-master\data\
文件 49367332 2018-07-13 09:01 sentence-similarity-master\data\file_corpus.txt
文件 453237 2018-07-13 09:01 sentence-similarity-master\data\file_sentence.txt
文件 5802916 2018-07-13 09:01 sentence-similarity-master\data\idf.txt
文件 56840 2018-07-13 09:01 sentence-similarity-master\data\medfw.txt
文件 2978 2018-07-13 09:01 sentence-similarity-master\data\test_result.txt
文件 86874190 2018-07-13 09:01 sentence-similarity-master\data\voc.txt
目录 0 2018-07-13 09:01 sentence-similarity-master\images\
文件 88419 2018-07-13 09:01 sentence-similarity-master\images\bm25.png
文件 143263 2018-07-13 09:01 sentence-similarity-master\images\cosine.png
文件 162673 2018-07-13 09:01 sentence-similarity-master\images\idf.png
文件 161561 2018-07-13 09:01 sentence-similarity-master\images\jaccard.png
文件 164037 2018-07-13 09:01 sentence-similarity-master\images\result.png
文件 2437 2018-07-13 09:01 sentence-similarity-master\similarity.py
文件 1454 2018-07-13 09:01 sentence-similarity-master\test.py
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