User Modeling for Modular Adaptive Hypermedia

More and more users work simultaneously with multiple applications, to perform various tasks. This situation puts high demands on the user adaptive systems (UAS), which traditionally support users’ work in a single isolated domain, and which now shift towards personalization in multi-task and crossapplication contexts. In their attempt to meet the increasing demands, UAS grow in complexity, but they do little about their compatibility and interoperability. We propose a Component-based Architecture for UAS: (CompAS). The key feature of CompAS is modularization of knowledge models and as a consequence allowing existing UAS to share their user models by means of a centralized user model service. As a proof of concept we show how two existing applications, AHA! [1] and UserModelService [2] can achieve interaction based on the extracted user model.