Simrank++: Query rewriting through link analysis of the click graph

Details Simrank++: Query rewriting through link analysis of the click graph Simrank++: Query rewriting through link analysis of the click graph

2007-12-04

arxiv.org/abs/0712.0499v1

Computer Science

Digital Libraries

Available via http://dbpubs.stanford.edu/pub/2007-32

Scientific paper

We focus on the problem of query rewriting for sponsored search. We base rewrites on a historical click graph that records the ads that have been clicked on in response to past user queries. Given a query q, we first consider Simrank as a way to identify queries similar to q, i.e., queries whose ads a user may be interested in. We argue that Simrank fails to properly identify query similarities in our application, and we present two enhanced version of Simrank: one that exploits weights on click graph edges and another that exploits ``evidence.'' We experimentally evaluate our new schemes against Simrank, using actual click graphs and queries form Yahoo!, and using a variety of metrics. Our results show that the enhanced methods can yield more and better query rewrites.

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