Discovery service for user models in a multi-application context

In order to efficiently manage information on the Web it becomes crucial to provide personalization not only within single systems, but across various Web applications. Interoperability of user models, on both syntactic and semantic level, emerges as a vital issue in order to achieve seamless personalization across different user-adaptive systems. In this paper we discuss the architecture of a broker-based discovery service for user models (BD-SUM), which allows applications to discover and invoke semantically described user models, in a multi-application context.