Re-ranking Passages with LSA in a Question Answering System

  • David Tomás
  • José L. Vicedo
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4730)


As in the previous QA@CLEF competition, two separate groups at the University of Alicante participated this year using different approaches. This paper describes the work of Alicante 1 group. We have continued with the research line established in the past competition, where the main goal was to obtain a fully data-driven system based on machine learning techniques. The main novelties introduced this year are focused on the information retrieval stage. We developed a module for passage re-ranking based on Latent Semantic Analysis (LSA). This year we extended our participation to monolingual Spanish task and bilingual Spanish-English task.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • David Tomás
    • 1
  • José L. Vicedo
    • 1
  1. 1.Department of Software and Computing Systems, University of AlicanteSpain

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