计算文本相似性的方法

原創 lww1993 2020-05-08 20:12

常用的有两种度量:   Jaccard Similarity与Cosine Similarity

 Jaccard Similarity的定义如下: 两组文本的交集大小除以两组文本的并集大小；

Cosine Similarity的定义如下: 两组文本进行TF或者TF-IDF变换后，化为向量，计算向量夹角的余弦。

 

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