algorithm - How to calculate the relevance of two words or pharse? -


i need algorithm calculate , measure relevance of 2 words or phrase, e.g. "apple" , "ipad".

can give me hints or related books on such topics?

thanks.

have @ mutual information , tf-idf. these methods used in information retrieval. former quantifies mutual dependence of 2 variables (each variable can phrase). latter traditionally used search engines prioritize results relevant particular query.


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