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Author(s): Angela Carrillo Ramos | Marlène Villanova-Oliver | Jérôme Gensel | Hervé Martin

Journal: Avances en Sistemas e Informática
ISSN 1657-7663

Volume: 4;
Issue: 3;
Start page: 15;
Date: 2007;
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Keywords: P2P Systems | Agents | Query Routing | PUMAS | Nomadic Environment

ABSTRACT
PUMAS is a framework based on agents and an approach Peer to Peer (P2P), which allows to nomadic user to access sever al sources of information through different types of devices, eventually mobile. PUMAS provides to nomadic user information adapted to her/his preferences and to the characteristics of the context of use (composed of characteristics such as location, connection moment, characteristic of the used device). In order to deliver adapted results, PUMAS hasmechanisms of enrichment of the initial query by the addition of criteria accounting for the user preferences and the context of use. This phase of enrichment of the query precedes a process of query routing composed of three activities: the analysis of the query, the selection of the information sources which are able to answer it and the redirection of the query towards these sources. After a state of the art dedicated to the query routing in P2P environments, we present the framework PUMAS. Several scenarios of use of PUMAS are described, in particular, the processes of enrichment and query routing which PUMAS executes in order to deliver to the user information adapted toher/his characteristics.
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