Query Expansion Based on Thesaurus Relations: Evaluation over Internet

  • Luiz Augusto Sangoi Pizzato
  • Vera Lúcia Strube de Lima
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2588)


In this work we present a heuristic for query expansion and its evaluation with information retrieval over the Internet. We obtained the precision and recall measures for the top-50 documents from 13 different queries. For those we had good results on estimated recall and F-measure values indicating that query expansion is a reasonable technique when few documents are retrieved.


Relevant Document Query Expansion Semantic Distance Original Query Recall Measure 
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 2003

Authors and Affiliations

  • Luiz Augusto Sangoi Pizzato
    • 1
  • Vera Lúcia Strube de Lima
    • 1
  1. 1.Programa de Pós-GraduaÇão em Ciência da ComputaÇ~aoPontifícia Universidade Católica do Rio Grande do Sul Faculdade de InformáticaRSBrazil

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