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Theses

La représentation des informations multimédias à partir des besoins informationnels des utilisateurs : approche d'intelligence économique

Abstract : In order to facilitate user' access to multimedia information, we think it necessary, in the first place, to study the specificity of multimedia information (as information retrieval object) through the optics of information and communication sciences theories. Secondly, our reflections center on user' information needs. We were able, through field survey, to determine a topology of users' multimedia information need. Consequently, we propose a multimedia information representation model tagged CO-MIR (Contextual Multimedia Information Representation Model) based on user' information need with emphasis on multimedia information use context. Indeed, the present approaches for representing multimedia information are limited to document and its content hence the representation attributes being used concern only these two dimensions. We propose to integrate information need into information representation by using attributes relative to user and context of use of search result. Reflection on decision-making situations made us to propose two categories context of use: (1) those that are identifiable before developing the Information Retrieval System (IRS) and (2) those that are expressed and added by users, in the course of use of the system. The prototype CO-Admire (Contextual Multimedia Information Retrieval Model) instantiating the CO-MIR model is a multimedia information retrieval system that allows annotation and knowledge sharing. This prototype provides the following functionalities: exploration, querying, analysis and annotation of the multimedia information base, annotation base and knowledge base. CO-MIR model and CO-Admire are designed and developed to provide cognitive support for users in the course of resolving decision-making and information problem. These two constitute our major research contributions.
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http://docnum.univ-lorraine.fr/prive/NANCY2/doc446/2010NAN21001.pdf
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Submitted on : Thursday, March 29, 2018 - 1:54:39 PM
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Hanene Maghrebi. La représentation des informations multimédias à partir des besoins informationnels des utilisateurs : approche d'intelligence économique. Sciences de l'information et de la communication. Université Nancy 2, 2010. Français. ⟨NNT : 2010NAN21001⟩. ⟨tel-01752695⟩

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