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摘要: tf(t in d):Term frequency factor for the term (t) in the document (d)—howmany times the term t occurs in the document. idf(t) :Inverse document frequency of the term: a measure of how“unique” t... 阅读全文
posted @ 2011-09-20 11:19 today4king 阅读(1878) 评论(0) 推荐(0) 编辑