Evaluation of a Thesaurus-Based Query Expansion Technique

  • Luiz Augusto Sangoi Pizzato
  • Vera Lúcia Strube de Lima
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2721)


This paper concerns the use and evaluation of a thesaurus-based query expansion method in information retrieval. The query expansion process assigns weights to different types of relations obtained fom vocabulary structures, providing an efficient way to measure distance measure between different terms. This method, tested for Portuguese, improved the overall information retrieval performance on small corpora and over the Internet.


Relevant Document Semantic Relation Query Expansion Information Retrieval System Semantic Distance 
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.FACIN - PPGCCPontifícia Universidade Católica do Rio Grande do Sul - PUCRSPorto AlegreBrasil

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