从Python:tf-idf-cosine:为了找到文档相似性,可以使用tf-idf余弦计算文档相似度.没有导入外部库,是否有任何方法可以计算2个字符串之间的余弦相似度？
s1 = "This is a foo bar sentence ."
s2 = "This sentence is similar to a foo bar sentence ."
s3 = "What is this string ? Totally not related to the other two lines ."
cosine_sim(s1, s2) # Should give high cosine similarity
cosine_sim(s1, s3) # Shouldn't give high cosine similarity value
cosine_sim(s2, s3) # Shouldn't give high cosine similarity value