Query Clauses and Term Independence

  • José R. Pérez-Agüera
  • Hugo Zaragoza
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5706)


Much current research in IR, Web-Search and Semantic-Web technologies aims at enriching the user query to gain a richer, more semantic understanding of the information need. Almost in all cases this query enrichment step is approached independently of the ranking function; however, this may be far from optimal. In this paper we discuss the problem of term dependency in the context of query expansion and show its dangers in a number of empirical evaluations. Furthermore we propose a simple method (query clauses) that can be applied to several standard ranking functions to exploit a simple type of term dependency.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • José R. Pérez-Agüera
    • 1
  • Hugo Zaragoza
    • 2
  1. 1.Dpto. de Ingeniería del Software e Inteligencia ArtificialUCMSpain
  2. 2.Yahoo! Research BarcelonaSpain

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