Sélection dynamique de services Web - Une approche à base de communautés

A community could be defined as a collection of Web services which share a common set of functionalities (e.g., auctions management, flights booking, etc.). Services involved in the same community are differentiated for each other according to their non-functional properties (reliability, performances, reputation, etc.). Communities could then be viewed as an intermediate level of abstraction between clients and the services they wish to use. This text proposes a model of communities whose main aim is to allow client applications to select the services which better meet a set of non-functional properties such as quality of service. The model of communities is formalised by a set of abstract data types. Types provide operations which enable service providers to register services to a community and client applications to select services, either at design time or at run time, those which meet their needs. MOTS-CLÉS : Services Web, sélection dynamique, communautés, modèle de qualité.