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An Ad Hoc Information Retrieval Perspective on PLSI through Language Model Identification

  • Jean-Cédric Chappelier
  • Emmanuel Eckard
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5766)

Abstract

This paper proposes a new document–query similarity for PLSI that allows queries to be used in PLSI without folding-in. We compare this similarity to Fisher kernels, the state-of-the-art approach for PLSI, on a corpus of 1M+ word occurrences coming from TREC–AP.

Keywords

Information Retrieval Language Model Latent Variable Model Fisher Kernel Word Occurrence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Jean-Cédric Chappelier
    • 1
  • Emmanuel Eckard
    • 1
  1. 1.School of Computer and Communication SciencesÉcole Polytechnique Fédérale de LausanneLausanneSwitzerland

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