Vers la conception de documents composites : extraction et organisation de l'information pertinente

Abstract : In recent years, information retrieval has expanded its area to the development of applications whose purpose is not solely to help the user to locate the relevant documents, but also try to build a synthetic answer as response to his expressed information needs. In this context, this thesis focuses on the production of an entity, called composite document, representing an overview of the different types of information that the user can find, in connection with his request, in the corpus in concern. After being concerned about the method of extraction and selection of fragments of text to be included in the composite document, the study has finally led to the setting up of a multi-objective algorithm, which aims at finding the thematic segments subset maximizing two criteria of query proximity and thematic representativeness. Beyond the composite document conception, the realized contributions concern the thematic segmentation and its evaluation, the relevance estimations and similarity computations, the impact of the thematic individualization in the field of information retrieval, the evaluation of systems presenting search results in term of a clusters set and, at last, the ways of query consideration in texts clustering process.
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Theses
Human-Computer Interaction [cs.HC]. Université d'Angers, 2008. French


https://tel.archives-ouvertes.fr/tel-00417551
Contributor : Sylvain Lamprier <>
Submitted on : Wednesday, September 16, 2009 - 10:53:35 AM
Last modification on : Wednesday, September 16, 2009 - 11:21:34 AM

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Sylvain Lamprier. Vers la conception de documents composites : extraction et organisation de l'information pertinente. Human-Computer Interaction [cs.HC]. Université d'Angers, 2008. French. <tel-00417551>

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