Advertisement

IdSay: Question Answering for Portuguese

  • Gracinda Carvalho
  • David Martins de Matos
  • Vitor Rocio
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5706)

Abstract

IdSay is an open domain Question Answering (QA) system for Portuguese. Its current version can be considered a baseline version, using mainly techniques from the area of Information Retrieval (IR). The only external information it uses besides the text collections is lexical information for Portuguese. It was submitted to the monolingual Portuguese task of the QA track of the Cross-Language Evaluation Forum 2008 (QA@CLEF) for the first time, and it answered correctly to 65 of the 200 questions in the first answer, and to 85 answers considering the three answers that could be returned per question. Generally, the types of questions that are answered better by IdSay system are measure factoids, count factoids and definitions, but there is still work to be done in these areas, as well as in the treatment of time. List questions, location and people/organization factoids are the types of question with more room for improvement.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    Forner, P., et al.: Overview of the CLEF 2008 Multilingual Question Answering Track. In: Peters, C., et al. (eds.) CLEF 2008. LNCS, vol. 5706, pp. 262–295. Springer, Heidelberg (2009)Google Scholar
  2. [2]
    Alves, M.A.: Engenharia do Léxico Computacional: princípios, tecnologia e o caso das palavras compostas. Mestrado em Engenharia Informática Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (2002)Google Scholar
  3. [3]
    Carvalho, G., Martins de Matos, D., Rocio, V.: Document retrieval for question answering: a quantitative evaluation of text preprocessing. In: Proceedings of the ACM first Ph.D. workshop in CIKM (ACM), pp. 125–130 (2007)Google Scholar
  4. [4]
    Magnini, B., et al.: The Multiple Language Question Answering Track at CLEF 2003. In: Peters, C., Gonzalo, J., Braschler, M., Kluck, M. (eds.) CLEF 2003. LNCS, vol. 3237, pp. 471–486. Springer, Heidelberg (2004)CrossRefGoogle Scholar
  5. [5]
    Prager, J.: Open-Domain Question-Answering. Foundations and Trends® in Information Retrieval (Now Publishers) 1(2), 91–231 (2006)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Gracinda Carvalho
    • 1
    • 2
    • 3
  • David Martins de Matos
    • 2
    • 4
  • Vitor Rocio
    • 1
    • 3
  1. 1.Universidade AbertaLisboaPortugal
  2. 2.L2F/INESC-ID LisboaLisboaPortugal
  3. 3.CITI - FCT/UNLPortugal
  4. 4.Instituto Superior Técnico/UTLPortugal

Personalised recommendations