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Using Syntactic Knowledge for QA

  • Gosse Bouma
  • Ismail Fahmi
  • Jori Mur
  • Gertjan van Noord
  • Lonneke van der Plas
  • Jörg Tiedemann
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4730)

Abstract

We describe the system of the University of Groningen for the monolingual Dutch and multilingual English to Dutch QA tasks. First, we give a brief outline of the architecture of our QA-system, which makes heavy use of syntactic information. Next, we describe the modules that were improved or developed especially for the CLEF tasks, among others incorporation of syntactic knowledge in IR, incorporation of lexical equivalences and coreference resolution, and a baseline multilingual (English to Dutch) QA system, which uses a combination of Systran and Wikipedia (for term recognition and translation) for question translation. For non-list questions, 31% (20%) of the highest ranked answers returned by the monolingual (multilingual) system were correct.

Keywords

Dependency Relation Question Type Question Answering Head Noun Explicit Date 
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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References

  1. 1.
    Bouma, G., Mur, J., van Noord, G., van der Plas, L., Tiedemann, J.: Question answering for Dutch using dependency relations. 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, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  2. 2.
    Bouma, G., Fahmi, I., Mur, J., van Noord, G., van der Plas, L., Tiedeman, J.: Linguistic knowledge and question answering. Traitement Automatique des LanguesGoogle Scholar
  3. 3.
    Bouma, G., van Noord, G., Malouf, R.: Alpino: Wide-coverage computational analysis of Dutch. In: Computational Linguistics in The Netherlands 2000, Rodopi, Amsterdam (2001)Google Scholar
  4. 4.
    Jakarta, A.: Apache Lucene - a high-performance, full-featured text search engine library (2004), http://lucene.apache.org/java/docs/index.html
  5. 5.
    Tiedemann, J.: Improving passage retrieval in question answering using NLP. In: Proceedings of the 12th Portuguese Conference on Artificial Intelligence (EPIA), Covilhã, Portugal. LNAI Series, Springer, Heidelberg (2005)Google Scholar
  6. 6.
    Bouma, G., Mur, J., van Noord, G.: Reasoning over dependency relations for QA. In: Benamara, F., Saint-Dizier, P. (eds.) Proceedings of the IJCAI workshop on Knowledge and Reasoning for Answering Questions (KRAQ), Edinburgh, pp. 15–21 (2005)Google Scholar
  7. 7.
    Fahmi, I., Bouma, G.: Learning to identify definitions using syntactic features. In: Basili, R., Moschitti, A. (eds.) Proceedings of the EACL workshop on Learning Structured Information in Natural Language Applications, Trento, Italy (2006)Google Scholar
  8. 8.
    Magnini, B., Vallin, A., Ayache, C., Erbach, G., Penas, A., de Rijke, M., Rocha, P., Simov, K., Sutcliffe, R.: Overview of the clef 2004 multilingual question answering track. In: Peters, C., Clough, P.D., Jones, G.J.F., Gonzalo, J., Kluck, M., Magnini, B. (eds.) Multilingual Information Access for Text, Speech and Images: Results of the Fifth CLEF Evaluation Campaign. LNCS, vol. 3491, Springer, Heidelberg (2005)Google Scholar
  9. 9.
    Ligozat, A.L., Grau, B., Robba, I., Vilat, A.: Evaluation and improvement of cross-lingual question answering strategies. In: Peñas, A., Sutcliffe, R. (eds.) EACL workshop on Multilingual Question Answering, Trento, Italy (2006)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Gosse Bouma
    • 1
  • Ismail Fahmi
    • 1
  • Jori Mur
    • 1
  • Gertjan van Noord
    • 1
  • Lonneke van der Plas
    • 1
  • Jörg Tiedemann
    • 1
  1. 1.Information Science, University of Groningen, PO Box 716 9700 AS GroningenThe Netherlands

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