The Hedge Algorithm for Metasearch at TREC 2007

Javed A. Aslam, Virgiliu Pavlu, Olena Zubaryeva
2007 Text Retrieval Conference  
Aslam, Pavlu, and Savell [3] introduced the Hedge algorithm for metasearch which effectively combines the ranked lists of documents returned by multiple retrieval systems in response to a given query. It has been demonstrated that the Hedge algorithm is an effective technique for metasearch, often significantly exceeding the performance of standard metasearch and IR techniques over small TREC collections. In this work, we explore the effectiveness of Hedge as an automatic metasearch engine over
more » ... the much larger GOV2 collection on about 1700 topics as part of the Million Query Track of TREC 2007. * We gratefully acknowledge the support provided by NSF grants CCF-0418390 and IIS-0534482.
dblp:conf/trec/AslamPZ07 fatcat:synm36todzdvrjfaexp7dwx3ie