Learning Routing Queries in a Query Zone Amit Singhalt~ Mandar Mitra$, Chris Buckleytt $Department of Computer .att .com tA T&T Labs Resemch; singhal&esearch Science, Cornell University; mitra@cs.cornell.edu ttsabir Research, IncO; ~hrisb@sabir.com Abstract Word usage is domain dependent. A common word in one domain can be quite infrequent in another. In this study we exploit th~ property of word usage to improve document routing. We show that routing queries (profiles) learned only from the documents in a query domain are better than the routing profiles learned when query domains are not used. We approximate a query domain by a guerg zone. Experiments show that routing profiles learned from a query zone are 8 12~0 more effective than the profiles generated when no query zoning is used. 1 Background Document routing is an important problem in the field of information retrieval. [12] When a user has marked several articles as relevant to his/her information need, a system should be able to automatically learn the user s profile and should be able to route (send) new, potentially interesting, articles to the user. This problem has also been called as selective dissemination oj information or information fiJtering. [4] Most current state
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