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Where in the Wikipedia Is That Answer? The XLDB at the GikiCLEF 2009 Task

  • Nuno Cardoso
  • David Batista
  • Francisco J. Lopez-Pellicer
  • Mário J. Silva
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6241)

Abstract

We developed a new semantic question analyser for a custom prototype assembled for participating in GikiCLEF 2009, which processes grounded concepts derived from terms, and uses information extracted from knowledge bases to derive answers. We also evaluated a newly developed named-entity recognition module, based in Conditional Random Fields, and a new world geo-ontology, derived from Wikipedia, which is used in the geographic reasoning process.

Keywords

SPARQL Query Question Reasoner Conditional Random Field Model Pattern Rule Question Object 
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.
    Silva, M.J., Martins, B., Chaves, M., Afonso, A.P., Cardoso, N.: Adding Geographic Scopes to Web Resources. CEUS - Computers Enviroment and Urban Systems 30, 378–399 (2006)CrossRefGoogle Scholar
  2. 2.
    Batista, D.: Prospecção de conceitos geográficos na web. Master’s thesis, University of Lisbon, Faculty of Sciences (2009) (in Portuguese)Google Scholar
  3. 3.
    Bick, E.: The Parsing System “Palavras”: Automatic Grammatical Analysis of Portuguese in a Constraint Grammar Framework. PhD thesis, University of Aarhus, Aarhus, Denmark (2000)Google Scholar
  4. 4.
    Auer, S., Bizer, C., Kobilarov, G., Lehmann, J., Cyganiak, R., Ives, Z.: DBpedia: A Nucleus for a Web of Open Data. In: Aberer, K., et al. (eds.) ASWC 2007 and ISWC 2007. LNCS, vol. 4825, pp. 722–735. Springer, Heidelberg (2007)CrossRefGoogle Scholar
  5. 5.
    Mota, C., Santos, D.: Desafios na avaliação conjunta do reconhecimento de entidades mencionadas: O Segundo HAREM. Linguateca (2009)Google Scholar
  6. 6.
    Lopez-Pellicer, F.J., Chaves, M., Rodrigues, C., Silva, M.J.: Geographic Ontologies Production in Grease-II. Technical Report DI/FCUL TR 09-18, Faculty of Sciences, University of Lisbon (2009), doi:10455/3256Google Scholar
  7. 7.
    Cohen, W.W.: MinorThird: Methods for Identifying Names and Ontological Relations in Text using Heuristics for Inducing Regularities from Data (2004), http://minorthird.sourceforge.net
  8. 8.
    Cardoso, N.: GikiCLEF topis and Wikipedia articles: did they blend? In: Peters, C., et al. (eds.) CLEF 2009 Workshop, Part I. LNCS, vol. 6241, pp. 318–321. Springer, Heidelberg (2010)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Nuno Cardoso
    • 1
  • David Batista
    • 1
  • Francisco J. Lopez-Pellicer
    • 1
  • Mário J. Silva
    • 1
  1. 1.Faculty of Sciences, LaSIGE IAAA, Centro Politecnico Superior (CPS) Universidad de ZaragozaUniversity of LisbonSpain

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