Finding Answers in the Œdipe System by Extracting and Applying Linguistic Patterns

  • Romaric Besançon
  • Mehdi Embarek
  • Olivier Ferret
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4730)


The simple techniques used in the Œdipe question answering system developed by the CEA-LIST/LIC2M did not perform well on definition questions in past CLEF-QA campaigns. We present in this article a new module for this QA system dedicated to this type of questions. This module is based on the automatic learning of lexico-syntactic patterns from examples. These patterns are then used for the extraction of short answers for definition questions. This technique has been experimented in the French monolingual track of the CLEF-QA 2006 evaluation, and results obtained have shown an improvement on this type of questions, compared to our previous participation.


Noun Phrase Content Word Short Answer Question Answering System Linguistic Pattern 
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 2007

Authors and Affiliations

  • Romaric Besançon
    • 1
  • Mehdi Embarek
    • 1
  • Olivier Ferret
    • 1
  1. 1.CEA-LIST, LIC2M (Multilingual Multimedia Knowledge Engineering Laboratory), B.P.6 - F92265 Fontenay-aux-Roses CedexFrance

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