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Multi-objective Query Optimization Using Topic Ontologies

  • Rocío L. Cecchini
  • Carlos M. Lorenzetti
  • Ana G. Maguitman
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5822)

Abstract

Formulating search queries based on a thematic context is a challenging problem due to the large number of combinations in which terms can be used to reflect the topic of interest. This paper presents a novel approach to learn topical queries that simultaneously satisfy multiple retrieval objectives. The proposed method consists in using a topic ontology to train an Evolutionary Algorithm that incrementally moves a population of queries towards the proposed objectives. We present an analysis of different single- and multi-objective strategies, discuss their strengths and limitations and test the most promising strategies on a large set of labeled Web pages. Our evaluations indicate that the tested strategies that apply multi-objective Evolutionary Algorithms are significantly superior to a baseline approach that attempts to generate queries directly from a topic description.

Keywords

topic ontologies topical queries semantic similarity multi-objective evolutionary algorithms query effectiveness 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Rocío L. Cecchini
    • 1
    • 2
  • Carlos M. Lorenzetti
    • 1
    • 3
  • Ana G. Maguitman
    • 1
    • 3
  1. 1.Depto de Ciencias e Ingeniería de la ComputaciónUniversidad Nacional del SurBahía BlancaArgentina
  2. 2.LIDeCC - Laboratorio de Investigación y Desarrollo en Computación Científica 
  3. 3.LIDIA - Laboratorio de Investigación y Desarrollo en Inteligencia Artificial 

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