Adaptive Hypermedia 2008
Workshops  > User Model Integration 
Workshop 5: User Model Integration
Organizers: Shlomo Berkovsky, Francesca Carmagnola, Dominikus Heckmann, Antonio Krueger, Tsvi Kuflik
Duration: 1/2 day

Click here for the workshop schedule and online proceedings


A key challenge for ubiquitous user modelling is user models integration. Different systems may represent the same information in different ways, using different syntactic and conceptual structures, therefore a mean of negotiation and clarification of data among systems is required. This is fundamental not only to access information, but also to reuse information.

Recently, suppliers of user profiles have shown an increased awareness of the need for standards for representing and exchanging user profile data. At the same time we observe that dealing with syntactic and semantic heterogeneity of user models is pretty complicated, especially in an open environment like adaptive hypermedia and adaptive web-based systems. The issue is: how can semantic heterogeneity be handled for ubiquitous user modeling? How can the Semantic Web technologies be employed to cope with such heterogeneity?

This issues will be the focus of the proposed workshop. We will deal with both theoretical and practical aspects of integrating user models from various sources, across different domains and different representations. The goal of this workshop is to bring together academic and industrial researchers from these communities to discuss the most innovative approaches to ubiquitous user modeling, to enhance the exchange of ideas and concepts, to determine the veins the research should proceed, and to go one step further towards personalization in ubiquitous computing and ongoing sharing. We expect that as a result of the workshop, new research directions will be defined and new collaborations among the workshop participants will be formed.

Ubiquitous user modelling describes ongoing modeling and exploitation of user behaviour with a variety of systems that share their user models. These shared user models can either be used for mutual or for individual adaptation goals. Ubiquitous user modeling differs from generic user modeling by the three additional concepts: ongoing modeling, ongoing sharing and ongoing exploitation. Systems that share their user models will improve the coverage, the level of detail, and the reliability of the integrated user models and thus allow better functions of adaptation. Ubiquitous user modelling implies new challenges of scalability, scrutability and privacy.

List of previous or related workshops
  • 5th International Workshop on Ubiquitous and User Modelling, in conjunction with IUI-2008, Gran Canaria, Spain.
  • Workshop on Ubiquitous and Decentralized User Modelling, in conjunction with UM-2007, Corfu, Greece.
  • Workshop on Ubiquitous User Modelling, in conjunction with ECAI 2006, Riva del Garda, Italy.
  • Workshop on Decentralized, Agent-Based and Social Approaches to User Modelling, in conjunction with UM-2005, Edinburgh, UK.
  • Workshop on Personalized Context Modeling and Management for UbiComp Applications, in conjunction with UbiComp-2005, Tokyo, Japan.
  • Workshop on User Experience Design for Pervasive Computing, in conjunction with Pervasive-2005, Munich, Germany.
  • Workshop on User Modelling for Ubiquitous Computing, in conjunction with UM-2003, Pittsburgh, PA.

In today's information world, small personal computerized devices, such as PDAs, smart phones and other smart appliances, become widely available and essential tools in many situations. The ongoing penetration of computers into everyday life leads to so-called ubiquitous environments, where computational power and networking capabilities are available (and used) everywhere. The strive of providing personal services to users made user modeling capability an essential part of any ubiquitous application.

Submission Guidelines:

  • Full papers with up to 8 pages, position and short papers with up to 5 pages, posters and demonstration proposals with up to 1 page are accepted for the workshop. The formatting guidelines are identical to the AH-2008 formatting guidelines.
  • All papers must be submitted by email to

Program Committee

Liliana Ardissono, University of Torino, Italy.

Lora Aroyo, Free University Amsterdam, the Netherlands.

Jörg Baus, DFKI GmbH, Germany.

Federica Cena, University of Torino, Italy Nadja De Carolis, University of Bari, Italy.

Vania Dimitrova, University of Leeds, UK Peter Dolog, Aalborg University, Denmark.

Cristina Gena, University of Torino, Italy Judy Kay, University of Sidney, Australia.

Alexander Kröner, DFKI GmbH, Germany.

Andreas Lorenz, Fraunhofer Institut, Germany.

Francesco Ricci, Free Univ. of Bozen-Bolzano, Italy.

Ilaria Torre, University of Torino, Italy Andreas Zimmermann (FIT), Germany.

User Modeling Inc. Leibniz University Hanover L3S Research Center Adaptive Hypermedia 2008 Conference Website
Eelco Herder (L3S Research Center, Hannover, Germany)