Recherche d'information et contexte

Abstract : My research work is related the field of Information Retrieval (IR) whose objective is to enable a user to find information that meets its needs within a large volume of information. The work in IR have focused primarily on improving information processing in terms of indexing to obtain optimal representations of documents and queries and in terms of matching between these representations. Contributions have long made no distinction between all searches assuming a unique type of search and when proposing a model intended to be effective for this unique type of search. The growing volume of information and diversity of situations have marked the limits of existing IR approaches bringing out the field of contextual IR. Contextual IR aims to better respond to users' needs taking into account the search context. The principle is to differentiate searches by integrating in the IR process, contextual factors that will influence the IRS effectiveness. The notion of context is broad and refers to all knowledge related to information conducted by a user querying an IRS. My research has been directed toward taking into account the contextual factors that are: the domain of information, the information structure and the user. The first three directions of my work consist in proposing models that incorporate each of these elements of context, and a fourth direction aims at exploring how to adapt the process to each search according to its context. Various European and national projects have provided application frameworks for this research and have allowed us to validate our proposals. This research has also led to development of various prototypes and allowed the conduct of PhD theses and research internships.
Document type :
Habilitation à diriger des recherches
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Contributor : Gilles Hubert <>
Submitted on : Monday, January 17, 2011 - 5:12:17 PM
Last modification on : Monday, April 29, 2019 - 4:47:35 PM
Long-term archiving on : Monday, April 18, 2011 - 3:08:12 AM


  • HAL Id : tel-00556791, version 1



Gilles Hubert. Recherche d'information et contexte. Informatique [cs]. Université Paul Sabatier - Toulouse III, 2010. ⟨tel-00556791⟩



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