BulQA: Bulgarian–Bulgarian Question Answering at CLEF 2005

  • Kiril Simov
  • Petya Osenova
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4022)


This paper describes the architecture of a Bulgarian– Bulgarian question answering system — BulQA. The system relies on a partially parsed corpus for answer extraction. The questions are also analyzed partially. Then on the basis of the analysis some queries to the corpus are created. After the retrieval of the documents that potentially contain the answer, each of them is further processed with one of several additional grammars. The grammar depends on the question analysis and the type of the question. At present these grammars can be viewed as patterns for the type of questions, but our goal is to develop them further into a deeper parsing system for Bulgarian.


Noun Phrase Relative Clause Interface Module Semantic Annotation Question Answering 
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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  1. 1.
    Dagan, I., Glickman, O.: Probabilistic Textual Entailment: Generic Applied Modeling of Language Variability. In: Learning Methods for Text Understanding and Mining Workshop (2004)Google Scholar
  2. 2.
    Kouylekov, M., Magnini, B.: Recognizing Textual Entailment with Tree Edit Distance Algorithms. In: PASCAL Challenges Workshop (2005)Google Scholar
  3. 3.
    Lin, D., Pantel, P.: Discovery of Inference Rules for Question Answering. Natural Language Engineering 7(4), 343–360 (2001)CrossRefGoogle Scholar
  4. 4.
    Negri, M., Tanev, H., Magnini, B.: Bridging Languages for Question Answering: DIOGENE at CLEF-2003. In: Proceedings of CLEF-2003, Norway, pp. 321–330 (2003)Google Scholar
  5. 5.
    Osenova, P., Simov, A., Simov, K., Tanev, H., Kouylekov, M.: Bulgarian-English Question Answering: Adaptation of Language Resources. In: Peters, C., Clough, P., Gonzalo, J., Jones, G.J.F., Kluck, M., Magnini, B. (eds.) CLEF 2004. LNCS, vol. 3491, pp. 458–469. Springer, Heidelberg (2005)CrossRefGoogle Scholar
  6. 6.
    Simov, K., Peev, Z., Kouylekov, M., Simov, A., Dimitrov, M., Kiryakov, A.: CLaRK — an XML-based System for Corpora Development. In: Proceedings of the Corpus Linguistics 2001 Conference, pp. 558–560 (2001)Google Scholar
  7. 7.
    Tanev, H.: Socrates: A Question Answering Prototype for Bulgarian. In: Proceedings of RANLP 2003, Bulgaria, pp. 460–466 (2003)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Kiril Simov
    • 1
  • Petya Osenova
    • 1
  1. 1.Linguistic Modelling LaboratoryBulgarian Academy of SciencesBulgaria

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