A Contextual User Model for Web Personalization
Over the past years, information personalization has provided several valuable achievements on the improvement and optimization of Web searching and recommendation taking into account user’s interests, preferences and contextual information. The main obje
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INRIA Paris-Rocquencourt, Domaine de Voluceau 78 153 Le Chesnay Cedex, France {zeina.jrad,marie-aude.aufaure}@inria.fr 2 Supélec - Plateau du Moulon - Service Informatique 91 192 Gif-sur-Yvette Cedex, France [email protected] 3 Riadi-Gdl Laboratory, ENSI Tunis, Campus la Manouba La Manouba, 2010, Tunisie [email protected]
Abstract. Over the past years, information personalization has provided several valuable achievements on the improvement and optimization of Web searching and recommendation taking into account user’s interests, preferences and contextual information. The main objective of a personalization system is to perform an information retrieval process taking into account the perception and the interest of the end-users. This paper focuses on how to model the user and his context in an extensible way that can be interpreted and used for personalization. We describe the architecture that provides personalization facilities based on the contextual user model for tourism usage1. Keywords: User modeling, context modeling, ontology-based modeling, Web personalization.
1 Introduction Available data over the web became more and more complex and voluminous. Spatiotemporal aspects contribute to this complexity, as well as the lack of structure, the multidimensional nature, dynamicity and mass of data. The increasing interest for information retrieval on the web has led to the semantic web initiative of the WorldWide Web Consortium. The semantic web [1] is an extension of the current web which aims at enriching it so that it will be more comprehensible by computers. Adding semantic information is a necessary condition to the development of the semantic web. Metadata, annotations and ontologies [2][3][4] carry out this semantic information and constitute the foundation of the semantic web. They avoid ambiguities and allow the user to be provided with more relevant data. Another objective of the semantic web is to describe the semantic relationships between these results. Over the past years, information personalization has provided several valuable achievements on the improvement and optimization of Web searching and 1
This work is supported by the French National Research Agency through the Eiffel Project (semantic web and e-tourism).
M. Weske, M.-S. Hacid, C. Godart (Eds.): WISE 2007 Workshops, LNCS 4832, pp. 350–361, 2007. © Springer-Verlag Berlin Heidelberg 2007
A Contextual User Model for Web Personalization
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recommendation taking into account user’s interests, preferences and contextual information. Personalization is also closely linked to navigation and visualization. Personalization can be defined as a correspondence between implicit and explicit users’ needs, and the response given to these needs. In other words, and as stated by [5]: "the challenge in an information-rich world is not only to make information available to people at any time, at any place, and in any form, but specifically to say the right thing at the right time in the right way". Amongst many successful ex
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