| Vol-462 Copyright © 2009 for the individual papers by the papers' authors. Copying permitted for private and academic purposes. Re-publication of material from this volume requires permission by the copyright owners.

# UCDEAS-2009
6th Workshop on User-Centred Design and Evaluation of Adaptive Systems

### Proceedings of the Sixth Workshop on User Centred Design and Evaluation of Adaptive Systems (UCDEAS09)
held at International Conference on User Modeling, Adaptation, and Personalization

### Trento, Italy, June 26, 2009.

Edited by

### Stephan Weibelzahl *
Judith Masthoff **
Alexandros Paramythis ***
Lex van Velsen ****

* National College of Ireland Dublin, Mayor Street IFSC, Dublin 1, Ireland
** University of Aberdeen, Aberdeen AB24 3UE, Scotland, UK
*** Johannes Kepler University Linz, Altenbergerstr. 69, A-4040 Linz, Austria
**** University of Twente, P.O. Box 217, 7500 AE Enschede, the Netherlands

You can download the Proceedings as a single pdf file (2.6MB) or access the individual papers below.

## Table of Contents

Preface: Sixth Workshop on User-Centred Design and Evaluation of Adaptive Systems
Stephan Weibelzahl, Judith Masthoff, Alexandros Paramythis and Lex van Velsen, pages i-ii

1. Differences and Changes in Preferences Regarding Personalized Systems: A User-Centred Design Perspective
   S. Gabrielli, and A. Jameson, pages 1-10
2. AnAmeter: The First Steps to Evaluating Adaptation
   F. Tarpin-Bernard, I. Marfisi-Schottman, and H. Habieb-Mammar, pages 11-20
3. An Experiment to Evaluate how to Better Present User Models to the Users
   F. Vernero, A. Petromilli, F. Cena, and C. Gena, pages 21-33
4. Retrospective Evaluation of Blended User Modeling For Adaptive Educational Systems
   M. Yudelson, and S. Sosnovsky, pages 34-43
5. Assessing the Effectiveness and Usability of Personalized Internet Search through a Longitudinal Evaluation
   L. van Velsen, F. König, and A. Paramythis, pages 44-53
6. Evaluating Recommender Explanations: Problems Experienced and Lessons Learned for the Evaluation of Adaptive Systems
   N. Tintarev, and J. Masthoff, pages 54-63
7. User-Centered Design Methods for Validating a Recommendations Model to Enrich Learning Management Systems with Adaptive Navigation Support
   O. C. Santos, L. Martin, E. del Campo, M. Saneiro, E. Mazzone, J. G. Boticario, and H. Petrie, pages 64-67

02-Jun-2009: submitted by Stephan Weibelzahl
02-Jun-2009: published on CEUR-WS.org