Conceptual query expansion

  • Authors:
  • F. A. Grootjen;Th. P. van der Weide

  • Affiliations:
  • Faculty of Science, Mathematics and Computer Science, Radboud University Nijmegen, Toernooiveld, Nijmegen, The Netherlands;Faculty of Science, Mathematics and Computer Science, Radboud University Nijmegen, Toernooiveld, Nijmegen, The Netherlands

  • Venue:
  • Data & Knowledge Engineering
  • Year:
  • 2006

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Abstract

This article presents a new, hybrid approach that projects an initial query result onto global information, yielding a local conceptual overview. Concepts found this way are candidates for query refinement.We show that the resulting conceptual structure after a typical short query of 2 terms, contains refinements that perform just as well as a most accurate query formulation.Subsequently we illustrate that query by navigation is an effective mechanism which in most cases finds the optimal concept in a small number of steps. When an optimal concept is not found, the navigation process still finds an acceptable sub-optimum.