Thesaurus rules can also be learned From a search engine query log After typing queries browse If query 1 and query2 leads to the same document Then, Similar(query l, query2) If queryl leads to Document with title keyword K Then, Similar(query1, k) Then transitivity Microsoft research china s work in WWW10 (Wen et al )on Encarta online8 Thesaurus Rules can also be Learned ◼ From a search engine query log ◼ After typing queries, browse… ◼ If query1 and query2 leads to the same document ◼ Then, Similar(query1, query2) ◼ If query1 leads to Document with title keyword K, ◼ Then, Similar(query1, K) ◼ Then, transitivity… ◼ Microsoft Research China’s work in WWW10 (Wen, et al.) on Encarta online