论文信息 - Improving weak ad-hoc queries using wikipedia asexternal corpus

Improving weak ad-hoc queries using wikipedia asexternal corpus

In an ad-hoc retrieval task, the query is usually short and the user expects to find the relevant documents in the first several result pages. We explored the possibilities of using Wikipedia's articles as an external corpus to expand ad-hoc queries. Results show promising improvements over measures that emphasize on weak queries.

Korris Fu-Lai Chung | Yinghao Li | Robert Wing Pong Luk | Edward Kei Shiu Ho

[1] W. Bruce Croft,et al. Indri : A language-model based search engine for complex queries ( extended version ) , 2005 .

[2] Fernando Diaz,et al. Improving the estimation of relevance models using large external corpora , 2006, SIGIR.

[3] Stephen E. Robertson,et al. Some simple effective approximations to the 2-Poisson model for probabilistic weighted retrieval , 1994, SIGIR '94.

[4] Chris Buckley. Why current IR engines fail , 2004, SIGIR '04.

[5] Stephen E. Robertson,et al. On GMAP: and other transformations , 2006, CIKM '06.

[6] Kui-Lam Kwok,et al. Improving Weak Ad-Hoc Retrieval by Web Assistance and Data Fusion , 2005, AIRS.

[7] Weblog Wikipedia,et al. In Wikipedia the Free Encyclopedia , 2005 .

[8] W. Bruce Croft,et al. A Markov random field model for term dependencies , 2005, SIGIR '05.

[9] Ellen M. Voorhees,et al. Overview of TREC 2003. , 2003 .

[10] Amanda Spink,et al. From E-Sex to E-Commerce: Web Search Changes , 2002, Computer.

[11] Fernando Diaz,et al. UMass Robust 2005: Using Mixtures of Relevance Models for Query Expansion , 2005, TREC.