Titlebook: Advances in Information Retrieval; 30th European Confer Craig Macdonald,Iadh Ounis,Ryen W. White Conference proceedings 2008 Springer-Verla

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Abebe Hailemariam,Kris Ivanovskit efficiently. Recently, document-centric impact models were developed in order to overcome some of these efficiency issues. However, such models have a number of problems, including poor effectiveness, and heuristic term weighting schemes. In this work, we present a statistical view of document-cen

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Carolina Machado,J. Paulo Davim the systems’ implementations issues, semantic indexing is strongly dependent upon the size and quality of the training examples. In this paper, we describe the collaborative annotation system used to annotate the High Level Features (HLF) in the development set of TRECVID 2007. This system is web-b

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Lecture Notes in Computer Sciencehttp://image.papertrans.cn/a/image/148372.jpg

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Some(What) Grand Challenges for Information Retrievalactivity of the portal vein — as an example of a blood vessel with highly pronounced spontaneous activity — can be described as a superimposition of several rhythms: 1) minute-rhythm (MR), which has a frequency of 0. 5–2/min and is combined with only small fluctuations in the basic membrane potentia

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