計算文本相似性的方法

原創 lww1993 2020-05-08 20:12

常用的有兩種度量:   Jaccard Similarity與Cosine Similarity

 Jaccard Similarity的定義如下: 兩組文本的交集大小除以兩組文本的並集大小；

Cosine Similarity的定義如下: 兩組文本進行TF或者TF-IDF變換後，化爲向量，計算向量夾角的餘弦。

 

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