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Priberam’s Question Answering System in QA@CLEF 2007

  • Carlos Amaral
  • Adán Cassan
  • Helena Figueira
  • André Martins
  • Afonso Mendes
  • Pedro Mendes
  • Cláudia Pinto
  • Daniel Vidal
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5152)

Abstract

This paper accounts for Priberam’s participation in the monolingual question answering (QA) track of CLEF 2007. In previous participations, Priberam’s QA system obtained encouraging results both in monolingual and cross-language tasks. This year we endowed the system with syntactical processing, in order to capture the syntactic structure of the question. The main goal was to obtain a more tuned question categorisation and consequently a more precise answer extraction. Besides this, we provided our system with the ability to handle topic-related questions and to use encyclopaedic sources like Wikipedia. The paper provides a description of the improvements made in the system, followed by the discussion of the results obtained in Portuguese and Spanish monolingual runs.

Keywords

Noun Phrase Question Answering Article Title Working Note Topic Detection 
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 2008

Authors and Affiliations

  • Carlos Amaral
    • 1
  • Adán Cassan
    • 1
  • Helena Figueira
    • 1
  • André Martins
    • 1
  • Afonso Mendes
    • 1
  • Pedro Mendes
    • 1
  • Cláudia Pinto
    • 1
  • Daniel Vidal
    • 1
  1. 1.Priberam Informática, Alameda D. Afonso HenriquesLisboaPortugal

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