Organisation et routage sémantiques dans les systèmes pair-à-pair

Peer-to-peer systems (P2P) are becoming a leading technology for multimedia resource access on the Internet. These systems can be classified depending on their underlying search model, which can be unstructured (queries are flooding in the peer’s network) or structured (queries are propagated according to a logical structure defined on peers). The unstructured model is less efficient but favours peer’s autonomy and supports more expressive query languages. Search efficiency in unstructured systems may be improved using some semantic inside the query process. This semantic is generally defined on peer’s content but may also used peer’s behaviour (query history). In this talk, we present a general overview of algorithms for semantic routing and organisation. We will give a focus on the work we have done in projects Rare and Respire combining semantic about peer’s content and behaviour. MOTS-CLÉS : pair-à-pair, routage sémantique, recherche d’informations