The University of Lisbon at CLEF 2006 Ad-Hoc Task

  • Nuno Cardoso
  • Mário J. Silva
  • Bruno Martins
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4730)


This paper reports the participation of the XLDB Group from the University of Lisbon in the CLEF 2006 ad-hoc monolingual and bilingual subtasks for Portuguese. We present our IR system, detail the query expansion strategy and the weighting scheme, describe the submitted runs and discuss the obtained results.


Query Expansion Logical Combination Disjunctive Normal Format Query String Term Weighting Scheme 
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

  • Nuno Cardoso
    • 1
  • Mário J. Silva
    • 1
  • Bruno Martins
    • 1
  1. 1.Faculty of Sciences, University of Lisbon 

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