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The Hedge Algorithm for Metasearch at TREC 2007

Javed A. Aslam, Virgiliu Pavlu, Olena Zubaryeva
2007 Text Retrieval Conference  
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 the much larger GOV2 collection on about 1700 topics as part of the Million Query Track of TREC 2007. * We gratefully  ...  Although the Hedge algorithm has been shown to be a strong technique for metasearch, pooling, and system evaluation using the relatively small or moderate TREC collections (TRECs 3, 5, 6, 7, 8) , it has  ... 
dblp:conf/trec/AslamPZ07 fatcat:synm36todzdvrjfaexp7dwx3ie

Leveraging Collection Structure in Information Retrieval With Applications to Search in Conversational Social Media

Jonathan L. Elsas
Although this type of collection structure is frequently critical for comprehension, it is rarely exploited in retrieval algorithms.  ...  Recent statistics show that sites hosting social media and community-generated content account for five of the top ten most visited websites in the United States [4], are visited regularly by a broad cross-section  ...  This model performed as the best non-expanded submission at the 2007 TREC Blog Distillation task.  ... 
doi:10.1184/r1/6720422.v1 fatcat:5ju46q7uzrel3d5uqh4xg6k2z4

Possibly imperfect ontologies for effective information retrieval

Gábor Nagypál
Because I also have two independent queries 14 , the various metasearch algorithms can be directly applied in my case.  ...  At metasearch, the task is to combine the results of different, independent query engines into one coherent list of results.  ... 
doi:10.5445/ksp/1000007206 fatcat:ytdvvlwburfq3bafbzzj25ka6e