1 www.baidu.com This paper proposes a method that uses search engine query logs for extracting paraphrases, which is illustrated in Figure 1.
three kinds of paraphrases can be extracted with our method, which include (1) query-title (Q-T): a query and a document title that users clicked on; (2) query-query (Q-Q): two queries, for which users clicked on the same document title; (3) titletitle (T-T): two titles that users clicked on for the same query.