Michael Sutterer

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We present a user profile management component for ubiquitous computing environments that provides management, inquiry and delivery of context-dependent user preferences. In particular, our approach takes into account that users act differently depending on their current context, and hence, that a user can be described by different submodels that represent(More)
Ontologies will be crucial for the future development of Next Generation Service Delivery Platforms. While various projects have defined ontologies for the mobile domain, there is yet little agreement on a common semantic model. One reason is the intrinsically hard problem of finding, using, mapping and evolving already existing ontologies. In this paper we(More)
We present a system for learning and utilizing context-dependent user models. The user models attempt to capture the interests of a user and link the interests to the situation of the user. The models are used for making recommendations to applications and services on what might interest the user in her current situation. In the design process we have(More)
Today's wireless and mobile service platforms are typically monolithic and centralized in nature, and they do not support heterogeneous service access and unified services usage experience. The SPICE service delivery platform builds on top of the IP Multimedia Subsystem to support creation and provisioning of advanced, added-value services that are composed(More)
Next-generation network applications aim at personalizing their services regarding the user's situation. This process calls for an adequate management of situation-dependent user preferences. We present arguments making clear the benefits of structuring a user profile into situation-dependent sub-profiles, especially for context-aware systems that comprise(More)
—We present the MobiLife approach to contextual adaptation of multimodal mobile applications for individual users. In particular, we show that integration of user-interface adaptation, contextualization and personalization components of the MobiLife system architecture enables a personal and situational context-dependent provisioning of applications such as(More)