摘要
首先对当前文本文档相似度计算方法的优缺点及适用范围进行了分析.由于越长的词语表达的意思一般越完整,基于这一思想,对不同长度的词语赋予不同的权值,把长度为n的公共序列引入到相似度的计算中,构造了一文本相似度计算公式,对其中相似度计算公式的合理性给予了理论证明.最后,通过实验证明该方法是有效的.
Firstly the merits and setbacks,application scopes and problems of existing methods were analyzed. Normally the longer the term,the more integrated it expressed. Based on this thought,the different weights were given to different long terms. Common sequence with length of n was introduced into the similarity computation and an equation was constructed about text similarity computation. Then the equation was theoretically proved to be reasonable. Finally the experiment results showed the method was validity.
出处
《吉林师范大学学报（自然科学版）》
2014年第4期130-132,共3页
Journal of Jilin Normal University:Natural Science Edition
基金
安徽财经大学科研项目(ACKY1452)
关键词
文本文档
公共序列
相似度
字符串匹配
text document
common sequence
similarity
string matching
