import jiebafrom jieba import analyseimport numpyimport gensimimport codecsimport pandas as pdimport jieba.posseg as pogfrom gensim.models import Word2Vecfrom gensim.models.word2vec import LineSentence#获取训练语料def data_handle(data): n = data.shape[0] d…

  本文作为笔者NLP入门系列文章第一篇,以后我们就要步入NLP时代.   本文将会介绍NLP中常见的词袋模型(Bag of Words)以及如何利用词袋模型来计算句子间的相似度(余弦相似度,cosine similarity).   首先,让我们来看一下,什么是词袋模型.我们以下面两个简单句子为例: sent1 = "I love sky, I love sea." sent2 = "I like running, I love reading."   通常,NL…

Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are similar. For example, words1 = ["great", "acting", "skills"] and words2 = [&…

Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are similar. For example, "great acting skills" and "fine drama talent" are similar, if th…

使用 TF-IDF 加权的空间向量模型实现句子相似度计算 字符匹配层次计算句子相似度 计算两个句子相似度的算法有很多种,但是对于从未了解过这方面算法的人来说,可能最容易想到的就是使用字符串匹配相关的算法,来检查两个句子所对应的字符串的字符相似程度.比如单纯的进行子串匹配,搜索 A 串中能与 B 串匹配的最大子串作为得分,亦或者用比较常见的最长公共子序列算法来衡量两个串的相似程度,使用编辑距离算法来衡量等. 上述基于字符匹配层次的算法一定程度上都可以计算出两个句子的相似度,不过他们只是单纯的从字符…

使用句子中出现单词的Vector加权平均进行文本相似度分析虽然简单,但也有比较明显的缺点:没有考虑词序且词向量区别不明确.如下面两个句子: "北京的首都是中国"与"中国的首都是北京"的相似度为1. "学习容易"和"学习困难"的相似度很容易也非常高. 为解决这类问题,需要用其他方法对句子进行表示,LSTM是常用的一种方式,本文简单使用单层LSTM对句子重新表示,并通过若干全连接层对句子相似度进行衡量. 数据准备 训练和测试数据包…

Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are similar. For example, "great acting skills" and "fine drama talent" are similar, if th…

Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are similar. For example, words1 = ["great", "acting", "skills"] and words2 = [&…

import mathfrom math import isnanimport pandas as pd#结巴分词,切开之后,有分隔符def jieba_function(sent): import jieba sent1 = jieba.cut(sent) s = [] for each in sent1: s.append(each) return ' '.join(str(i) for i in s)def count_cos_similarity(vec_1, vec_2): if le…

Given two sentences words1, words2 (each represented as an array of strings), and a list of similar word pairs pairs, determine if two sentences are similar. For example, words1 = ["great", "acting", "skills"] and words2 = [&…