Binary lexical relations for text representation in information retrieval

  • Authors:
  • Marco Gonzalez;Vera Lúcia Strube de Lima;José Valdeni de Lima

  • Affiliations:
  • ,PUCRS – Faculdade de Informática, Porto Alegre, Brazil;PUCRS – Faculdade de Informática, Porto Alegre, Brazil;UFRGS – Instituto de Informática, Porto Alegre, Brazil

  • Venue:
  • NLDB'05 Proceedings of the 10th international conference on Natural Language Processing and Information Systems
  • Year:
  • 2005

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Abstract

Text representation is crucial for many natural language processing applications. This paper presents an approach to extraction of binary lexical relations (BLR) from Portuguese texts for representing phrasal cohesion mechanisms. We demonstrate how this automatic strategy may be incorporated to information retrieval systems. Our approach is compared to those using bigrams and noun phrases for text retrieval. BLR strategy is shown to improve on the best performance in an experimental information retrieval system.