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Distributed multisearch and resource selction for the TREC

By Chris Fallen, Greg Newby and Kylie Mccormick


A distributed information retrieval system with resource‐selection and result‐set merging capability was used to search subsets of the GOV2 document corpus for the 2008 TREC Million Query Track. The GOV2 collection was partitioned into host‐name subcollections and distributed to multiple remote machines. The Multisearch demonstration application restricted each search to a fraction of the available sub‐collections that was pre‐determined by a resource‐selection algorithm. Experiment results from topic‐by‐topic resource selection and aggregate topic resource selection are compared. The sensitivity of Multisearch retrieval performance to variations in the resource selection algorithm is discussed

Year: 2008
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