Skip to main content

Priberam’s Question Answering System for Portuguese

  • Conference paper

Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 4022))

Abstract

This paper describes the work done by Priberam in the development of a question answering (QA) system for Portuguese. The system was built using the company’s natural language processing (NLP) workbench and information retrieval technology. Special focus is given to question analysis, document and sentence retrieval, as well as answer extraction stages. The paper discusses the system’s performance in the context of the QA@CLEF 2005 evaluation.

This is a preview of subscription content, log in via an institution.

Buying options

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD   169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Santos, D., Rocha, P.: CHAVE: Topics and questions on the Portuguese participation in CLEF. In: Working Notes for the CLEF 2004 Workshop (2004)

    Google Scholar 

  2. Quaresma, P., Quintano, L., Rodrigues, I., Saias, J., Salgueiro, P.: The University of Évora approach to QA@CLEF-2004. In: Working Notes for the CLEF 2004 Workshop, Bath, UK, 15-17 Sepember (2004)

    Google Scholar 

  3. Costa, L.: First evaluation of Esfinge – a question-answering system for Portuguese. In: Working Notes for the CLEF 2004 Workshop, Bath, UK, Sepember 15-17, (2004)

    Google Scholar 

  4. Amaral, C., Laurent, D., Martins, A., Mendes, A., Pinto, C.: Design and Implementation of a Semantic Search Engine for Portuguese. In: Proc. of 4th Int. Conf. on Language Resources and Evaluation (LREC 2004), Lisbon, Portugal, May 26-28 (2004), Also available at http://www.priberam.pt/docs/LREC2004.pdf

  5. Laurent, D., Varone, M., Amaral, C., Fuglewicz, P.: Multilingual Semantic and Cognitive Search Engine for Text Retrieval Using Semantic Technologies. In: Pre-proc. of the 1st Workshop on International Proofing Tools and Language Technologies, Patras, Greece, 1-2 July (2004)

    Google Scholar 

  6. Amaral, C., Figueira, H., Mendes, A., Mendes, P., Pinto, C.: A Workbench for Developing Natural Language Processing Tools. In: Pre-proc. of the 1st Workshop on International Proofing Tools and Language Technologies, Patras, Greece, July 1-2 (2004), Also available at http://www.priberam.pt/docs/WorkbenchNLP.pdf

  7. Laurent, D., Séguéla, P., Nègre, S.: Cross Lingual Question Answering using QRISTAL for CLEF 2005. In: Working Notes for the CLEF 2005 Workshop, Vienna, Austria, 21-23 September (2005)

    Google Scholar 

  8. Thede, S., Harper, M.: A second-order hidden Markov model for part-of-speech tagging. In: Proc. of the 37th Annual Meeting of the ACL, Maryland (1999)

    Google Scholar 

  9. Manning, C.D., Schütze, H.: Foundations of Statistical Natural Language Processing (2nd printing). The MIT Press, Cambridge (2000)

    Google Scholar 

  10. Magnini, B., Vallin, A., Ayache, C., Erbach, G., Peñas, A., de Rijke, M., Rocha, P., Simov, K., Sutcliffe, R.: Overview of the CLEF 2004 Multilingual Question Answering Track. In: Peters, C., Clough, P., Gonzalo, J., Jones, G.J.F., Kluck, M., Magnini, B. (eds.) CLEF 2004. LNCS, vol. 3491, pp. 371–391. Springer, Heidelberg (2005)

    Chapter  Google Scholar 

  11. B.-Yates, R., R.-Neto, B.: Modern Information Retrieval. ACM Press, New York (1999)

    Google Scholar 

  12. Vallin, A., Giampiccolo, D., Aunimo, L., Ayache, C., Osenova, P., Peñas, A., de Rijke, M., Sacaleanu, B., Santos, D., Sutcliffe, R.: Overview of the CLEF 2005 Multilingual Question Answering Track. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, pp. 307–331. Springer, Heidelberg (2006)

    Chapter  Google Scholar 

  13. Voorhees, E.: Overview of the TREC 2004 QA Track. In: Proc. of the 13th Text Retrieval Conf (TREC 2004), Gaithersburg, Maryland, November 16-19 (2005)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2006 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Amaral, C., Figueira, H., Martins, A., Mendes, A., Mendes, P., Pinto, C. (2006). Priberam’s Question Answering System for Portuguese. In: Peters, C., et al. Accessing Multilingual Information Repositories. CLEF 2005. Lecture Notes in Computer Science, vol 4022. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11878773_46

Download citation

  • DOI: https://doi.org/10.1007/11878773_46

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-45697-1

  • Online ISBN: 978-3-540-45700-8

  • eBook Packages: Computer ScienceComputer Science (R0)

Publish with us

Policies and ethics