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Habilitation à diriger des recherches

Modélisation de l'utilisateur et recherche coopérative d'information dans les systèmes de recherche d'informations multimedia en vue de la personnalisation des réponses

Amos David 1
1 SITE - SITE
LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : The fonctionning of an IRS is compsed of veral steps : presentation of the user's needs, processinf os the user's query by the system, evaluation of the system's proposed results, and modification or updating the query by the system or by the user. In each step, taking into account the user's particularity is necessary so as to make the system more efficient, particularly as regards the relevance of the system's response. It is expected of the user to provide an accurate formulation of his needs and capable of translating them into queries using query language understood by the system. The evaluation of the degree of relevance of a system's response depends of parameters that are specific to the user.

As regards the user, we are working on three tpes of knowledge for representing him : his evocative habits, his level of knowledge based on the concept of fundamental categories, and his measurs of relevance of the proposed solutions by the system. Through the observation of a documentary ressource center and based on the efficiency of results obtained through dialogue vetween the user and the mediator in the ressource center, we have oriented our research towards the development of a cooperative information retreival system (CIRS). In a CIRS, the user can make research in collaboration with a mediator on distant working stations.

The short term perspectives are to represent each user through the history of his acitivities. These activities are represented in form of documents that can be later analyzed using our method of access and information analysis. We intend to use case based reasoning pour the exploitation of these analysis in order to personalize the system's response and which can be used by the mediator in the context of cooperative information retreival.

On long term basis, we beleive that there is need to study the process of communication (or dialog) between the user and the mediator in the context of CIRS. The systems that we have developed can serve as observation tools for the observation of the user's behavior. There is also the need to integrate these tools in the environment of documentary access allowing not only to analyse information of a documentary base but allowing also the access to primary documents.
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Habilitation à diriger des recherches
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Submitted on : Saturday, May 5, 2007 - 11:30:43 AM
Last modification on : Friday, February 26, 2021 - 3:28:08 PM
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Amos David. Modélisation de l'utilisateur et recherche coopérative d'information dans les systèmes de recherche d'informations multimedia en vue de la personnalisation des réponses. domain_stic.inge. Université Nancy II, 1999. ⟨tel-00144830⟩

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