Paul De bra Alfred Kobsa David Chin(Eds) User Modeling, a Adaptation, and Personalization 18th International Conference, UMAP 2010 Big Island, HI, USA, June 2010 Proceedings S pringer
Lecture Notes in Computer Science 6075 Commenced Publication in 973 Founding and Former Series Editors: Gerhard Goos. Juris Hartmanis. and Jan van Leeuwen Editorial board David hutchison Lancaster University, UK Takeo kanade Carnegie Mellon University, Pittsburgh, PA, USA Jon M. Kleinberg Cornell University. Ithaca. NY USA Alfred Kobsa University of California, Irvine, CA, USA Friedemann Mattern ETH Zurich. Switzer John C. Mitchell Stanford University, CA, USA Weizmann Institute of Science, Rehovot, Israel University of Bern, Switzerland C. Pandu rangan Indian Institute of Technology, Madras, India TU Dortmund University, Germany Madhu Sudan Microsoft Research, Cambridge, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug t University of California, Berkeley, CA, USA Gerhard Weikum Mar-Planck Institute of Computer Science, Saarbruecken, Germany
Lecture Notes in Computer Science 6075 Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen Editorial Board David Hutchison Lancaster University, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Alfred Kobsa University of California, Irvine, CA, USA Friedemann Mattern ETH Zurich, Switzerland John C. Mitchell Stanford University, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel Oscar Nierstrasz University of Bern, Switzerland C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen TU Dortmund University, Germany Madhu Sudan Microsoft Research, Cambridge, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Gerhard Weikum Max-Planck Institute of Computer Science, Saarbruecken, Germany
Paul De Bra Alfred Kobsa David Chin(eds) User Modeling, Adaptation and personalization 1 Sth International Conference. UMAP 2010 Big Island, HI, USA, June 20-24, 2010 Proceedings springer
Paul De Bra Alfred Kobsa David Chin (Eds.) User Modeling, Adaptation, and Personalization 18th International Conference, UMAP 2010 Big Island, HI, USA, June 20-24, 2010 Proceedings 13
Volume editors Paul de bra Eindhoven University of Technology, Computer Science Department 5600 MB Eindhoven. The Netherlands E-mail: debra@win. tue. nl Alfred Kobsa University of California, School of Information and Computer Sciences Irvine CA 92697-3440 USA David chin University of Hawaii, Department of Information and Computer Sciences Honolulu. HI 96822. USA E-mail: chin@@hawail.edu Library of Congress Control Number: 2010927592 CR Subject Classification (1998): H2.8, H4, H.5, 1.2, C 2, 1.5 LNCS Sublibrary: SL 3-Information Systems and Application, incl. Internet/Web and hcl ISSN 0302-974 ISBN-10 3-642-13469-6 Springer Berlin Heidelberg New York ISBN-13 978-3-642-13469-2 Springer Berlin Heidelberg New York whether the whole or part of the material is data banks. Duplication of this pr German Copyright Law of September 9, 1965 current version, and permission for use m be obtained from Springer. Violations are liable to prosecution under the German Copyright Law prnger.com O Springer-Verlag Berlin Heidelberg 2010 Typesetting: Camera-ready by author, data conversion by Scientific Publishing Services, Chennai, India Printed on acid-free paper
Volume Editors Paul De Bra Eindhoven University of Technology, Computer Science Department 5600 MB Eindhoven, The Netherlands E-mail: debra@win.tue.nl Alfred Kobsa University of California, School of Information and Computer Sciences Irvine, CA 92697-3440, USA E-mail: kobsa@uci.edu David Chin University of Hawaii, Department of Information and Computer Sciences Honolulu, HI 96822, USA E-mail: chin@hawaii.edu Library of Congress Control Number: 2010927592 CR Subject Classification (1998): H.2.8, H.4, H.5, I.2, C.2, I.5 LNCS Sublibrary: SL 3 – Information Systems and Application, incl. Internet/Web and HCI ISSN 0302-9743 ISBN-10 3-642-13469-6 Springer Berlin Heidelberg New York ISBN-13 978-3-642-13469-2 Springer Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. springer.com © Springer-Verlag Berlin Heidelberg 2010 Printed in Germany Typesetting: Camera-ready by author, data conversion by Scientific Publishing Services, Chennai, India Printed on acid-free paper 06/3180
Preface The 18th International Conference on User Modeling, Adaptation and Personal ization (UMAP 2010) took place on Big Island, Hawaii during June 20-24, 2010 It was the second conference after UMAP 2009 in Trento, Italy, which merged the successful biannual User Modeling(UM) and Adaptive Hypermedia(AH) conference series The Research Paper track of the conference was chaired by Paul De Bra from the Eindhoven University of Technology and Alfred Kobsa from the University of California, Irvine. They were assisted by an international Program Committee of 80 leading figures in the AH and UM communities as well as highly promising younger researchers. Papers in the Research Paper track were generally reviewed by three and sometimes even four reviewers, with one of them acting as a lead who initiates a discussion between reviewers and reconciles their opinions in a meta-review. The conference solicited Long research Papers of up to 12 pages in length, which represent original reports of substantive new research. In addition, he conference accepted Short Research Papers of up to six pages in length, whose merit was assessed more in terms of originality and importance than maturity and technical validation. The Research Paper track received 161 submission, with 112 in the long and 49 in the short paper category. Of these, 26 long and 6 short papers were accepted, resulting in an acceptance rate of 23. 2% for long papers and 19.9% overall Many authors of rejected papers were encouraged to resubmit to the poster and demo track of the conference Following the example of UMAP 2009, the conference also had an Indus- try Paper track chaired by Bhaskar Mehta from Google, Ziirich, Switzerland and Kurt Partridge from PARC, Palo Alto, USA. This track covered innovative commercial implementations or applications of UMAP technologies, and experi- ence in applying recent research advances in practice. Submissions to this track were reviewed by a separate Industry Paper Committee with 32 leading industry researchers and practitioners. Five long and one short submissions were received nd four of the long papers were accepted The conference also included a Doctoral Consortium. a forum for phd stu- dents to get feedback and advice from a Doctoral Consortium Committee of 17 leading UMAP researchers. The Doctoral Consortium was chaired by Ingrid Zukerman from Monash University, Australia, and Liana Razmerita from the Copenhagen Business School, Denmark. This track received 19 submissions of which 7 were accepted The traditional poster and demo session of the conference was this time chaired by Fabian Bohnert from Monash University, Australia, and Luz Quiroga from the University of Hawaii, Manoa. As of the time of writing, the late sub- mission deadline is still 2 months away, and hence the number of acceptances is still unknown. We expect though that this session will again feature dozens of
Preface The 18th International Conference on User Modeling, Adaptation and Personalization (UMAP 2010) took place on Big Island, Hawaii during June 20–24, 2010. It was the second conference after UMAP 2009 in Trento, Italy, which merged the successful biannual User Modeling (UM) and Adaptive Hypermedia (AH) conference series. The Research Paper track of the conference was chaired by Paul De Bra from the Eindhoven University of Technology and Alfred Kobsa from the University of California, Irvine. They were assisted by an international Program Committee of 80 leading figures in the AH and UM communities as well as highly promising younger researchers. Papers in the Research Paper track were generally reviewed by three and sometimes even four reviewers, with one of them acting as a lead who initiates a discussion between reviewers and reconciles their opinions in a meta-review. The conference solicited Long Research Papers of up to 12 pages in length, which represent original reports of substantive new research. In addition, the conference accepted Short Research Papers of up to six pages in length, whose merit was assessed more in terms of originality and importance than maturity and technical validation. The Research Paper track received 161 submission, with 112 in the long and 49 in the short paper category. Of these, 26 long and 6 short papers were accepted, resulting in an acceptance rate of 23.2% for long papers and 19.9% overall. Many authors of rejected papers were encouraged to resubmit to the Poster and Demo track of the conference. Following the example of UMAP 2009, the conference also had an Industry Paper track chaired by Bhaskar Mehta from Google, Z¨urich, Switzerland and Kurt Partridge from PARC, Palo Alto, USA. This track covered innovative commercial implementations or applications of UMAP technologies, and experience in applying recent research advances in practice. Submissions to this track were reviewed by a separate Industry Paper Committee with 32 leading industry researchers and practitioners. Five long and one short submissions were received, and four of the long papers were accepted. The conference also included a Doctoral Consortium, a forum for PhD students to get feedback and advice from a Doctoral Consortium Committee of 17 leading UMAP researchers. The Doctoral Consortium was chaired by Ingrid Zukerman from Monash University, Australia, and Liana Razmerita from the Copenhagen Business School, Denmark. This track received 19 submissions of which 7 were accepted. The traditional Poster and Demo Session of the conference was this time chaired by Fabian Bohnert from Monash University, Australia, and Luz Quiroga from the University of Hawaii, Manoa. As of the time of writing, the late submission deadline is still 2 months away, and hence the number of acceptances is still unknown. We expect though that this session will again feature dozens of
lively posters and system demonstrations. Summaries of these e presentations will be published in online adjunct proceedings The UMAP 2010 program also included Workshops and Tutorials that were selected by Chairs Judith Masthoff, University of Aberdeen, UK, and Yang Wang, Carnegie Mellon University, Pittsburgh, USA. The following workshops nd tutorials were announced Intelligent Techniques for Web Personalization and Recommender Systems chaired by Bamshad Mobasher, Dietmar Jannach and Sarabjot Singh Anand Pervasive User Modeling and Personalization, chaired by Shlomo Berkovsky, Fabian Bohnert, Francesca Carmagnola, Doreen Cheng, Dominikus Heck- mann. Tsvika Kufik. Petteri Nurmi and Kurt Partridge User Models for Motivational Systems: The Affective and the Rational routes to Persuasion, chaired by Floriana Grasso, Nadja De Carolis and Judith Masthoff Adaptive Collaboration Support, chaired by Alexandros Paramythis and Stavros Demetriadis Adaptation in Social and Semantic Web, chaired by Carlo Tasso, Feder- ica Cena, Antonina Dattolo, Styliani Kleanthous, David Bueno vallejo and Architectures and Building Blocks of Web-Based User-Adaptive Systems, chaired by Michael Yudelson, Myola Pechenizkiy, Eelco Herder, Geert-Jan Houben and Fabian abel Adaptation and Personalization in e-b/Learning Using Pedagogic Conver- sational Agents, chaired by Diana Perez-Marin, Ismael Pascual-Nieto and Susan bull User Modeling and Adaptation for Daily Routines: Providing Assistance to People with Special and Specific Needs, chaired by Estefania Martin, Pablo Haya and Rosa M. Carro Designing Adaptive Social Applications(Tutorial), presented by Julita Vas- mileva Evaluation of Adaptive Systems(Tutorial), chaired by Stephan Weibelzahl lexandros Paramythis, Judith Masthoff Finally, the conference also featured two invited talks and an industry panel The invited speakers were: Ed Chang, Director of Research, Google China: " AdHeat-An Influence- based Diffusion Model for Propagating Hints to Personalize Social Ads Stacey Marcella, Institute for Creative Technologies, University of Southern California: "Modeling Emotion and Its Expression in Virtual Humans In addition to all the contributors mentioned. we would also like to thank the lo cal Arrangements Chair Keith Edwards from the University of Hawaii, Hilo, and the Publicity Chair Eelco Herder from the University of Hannover, germany. We deeply acknowledge the conscientious work of the Program Committee members and the additional reviewers, who are listed on the next pages. The confer ence would also not have been possible without the work of many "invisible
VI Preface lively posters and system demonstrations. Summaries of these presentations will be published in online adjunct proceedings. The UMAP 2010 program also included Workshops and Tutorials that were selected by Chairs Judith Masthoff, University of Aberdeen, UK, and Yang Wang, Carnegie Mellon University, Pittsburgh, USA. The following workshops and tutorials were announced: – Intelligent Techniques for Web Personalization and Recommender Systems, chaired by Bamshad Mobasher, Dietmar Jannach and Sarabjot Singh Anand – Pervasive User Modeling and Personalization, chaired by Shlomo Berkovsky, Fabian Bohnert, Francesca Carmagnola, Doreen Cheng, Dominikus Heckmann, Tsvika Kuflik, Petteri Nurmi, and Kurt Partridge – User Models for Motivational Systems: The Affective and the Rational Routes to Persuasion, chaired by Floriana Grasso, Nadja De Carolis and Judith Masthoff – Adaptive Collaboration Support, chaired by Alexandros Paramythis and Stavros Demetriadis – Adaptation in Social and Semantic Web, chaired by Carlo Tasso, Federica Cena, Antonina Dattolo, Styliani Kleanthous, David Bueno Vallejo and Julita Vassileva – Architectures and Building Blocks of Web-Based User-Adaptive Systems, chaired by Michael Yudelson, Myola Pechenizkiy, Eelco Herder, Geert-Jan Houben and Fabian Abel – Adaptation and Personalization in e-b/Learning Using Pedagogic Conversational Agents, chaired by Diana P´erez-Mar´ın, Ismael Pascual-Nieto and Susan Bull – User Modeling and Adaptation for Daily Routines: Providing Assistance to People with Special and Specific Needs, chaired by Estefan´ıa Mart´ın, Pablo Haya and Rosa M. Carro – Designing Adaptive Social Applications (Tutorial), presented by Julita Vassileva – Evaluation of Adaptive Systems (Tutorial), chaired by Stephan Weibelzahl, Alexandros Paramythis, Judith Masthoff Finally, the conference also featured two invited talks and an industry panel. The invited speakers were: – Ed Chang, Director of Research, Google China: “AdHeat — An Influencebased Diffusion Model for Propagating Hints to Personalize Social Ads” – Stacey Marcella, Institute for Creative Technologies, University of Southern California: “Modeling Emotion and Its Expression in Virtual Humans” In addition to all the contributors mentioned, we would also like to thank the Local Arrangements Chair Keith Edwards from the University of Hawaii, Hilo, and the Publicity Chair Eelco Herder from the University of Hannover, Germany. We deeply acknowledge the conscientious work of the Program Committee members and the additional reviewers, who are listed on the next pages. The conference would also not have been possible without the work of many “invisible
Preface helpers, including Riet van Buul from the Eindhoven University of Technology, who helped with language and formatting corrections in the final versions of several papers. We also gratefully acknowledge our sponsors who helped us with funding and organizational expertise and affiliation: User Modeling Inc, ACM SIGART, SIGCHI and SIGiR, the Chen Family Foundation, Microsoft Research the U.S. National Science Foundation, Springer, and the University of Hawaii at Manoa. Finally, we want to acknowledge the use of Easy Chair for the manage- ment of the review process and the preparation of the proceedings, and the help of its administrator Andrei Voronkov in implementing system enhancements that his conference had commissioned April 2010 Paul de bra Alfred Kob David chin
Preface VII helpers, including Riet van Buul from the Eindhoven University of Technology, who helped with language and formatting corrections in the final versions of several papers. We also gratefully acknowledge our sponsors who helped us with funding and organizational expertise and affiliation: User Modeling Inc., ACM SIGART, SIGCHI and SIGIR, the Chen Family Foundation, Microsoft Research, the U.S. National Science Foundation, Springer, and the University of Hawaii at Manoa. Finally, we want to acknowledge the use of EasyChair for the management of the review process and the preparation of the proceedings, and the help of its administrator Andrei Voronkov in implementing system enhancements that this conference had commissioned. April 2010 Paul De Bra Alfred Kobsa David Chin
Organization UMAP 2010 was organized by the University of Hawaii, Manoa, in cooperation with User Modeling Inc, ACM/SIGIR, ACM/SIGCHI and ACM/SIGART. The conference took place during June 20-24, 2010 on Big Island, Hawaii Organizing Committee General chair David n. Chin University of Hawaii, Manoa Program Co-chairs Alfred Kobsa University of California, Irvine, USA Paul De bra Eindhoven University of Technology, The netherland Industry Track Co-chairs Kurt Partridge PARC, Palo Alto, USA Bhaskar ehta Google. Zurich. Switzerland Workshop and Tutorial Co-chairs udith mast hoff University of Aberdeen, UK University of California, Irvine, USA Doctoral consortium Co-chairs Ingrid Zukerman Monash University, Melbourne, Australia Liana razmerita Copenhagen Business School, Denmark Demo and poster co-chairs Luz Quiroga University of Hawaii, Manoa Fabian bohnert Monash University, Melbourne, Australia Local Arrangements Chair Keith edwards University of Hawaii, Hilo Publicity Chair Eelco herder L3S Research Center, Hannover, germany
Organization UMAP 2010 was organized by the University of Hawaii, Manoa, in cooperation with User Modeling Inc., ACM/SIGIR, ACM/SIGCHI and ACM/SIGART. The conference took place during June 20–24, 2010 on Big Island, Hawaii. Organizing Committee General Chair David N. Chin University of Hawaii, Manoa Program Co-chairs Alfred Kobsa University of California, Irvine, USA Paul De Bra Eindhoven University of Technology, The Netherlands Industry Track Co-chairs Kurt Partridge PARC, Palo Alto, USA Bhaskar Mehta Google, Z¨urich, Switzerland Workshop and Tutorial Co-chairs Judith Masthoff University of Aberdeen, UK Yang Wang University of California, Irvine, USA Doctoral Consortium Co-chairs Ingrid Zukerman Monash University, Melbourne, Australia Liana Razmerita Copenhagen Business School, Denmark Demo and Poster Co-chairs Luz Quiroga University of Hawaii, Manoa Fabian Bohnert Monash University, Melbourne, Australia Local Arrangements Chair Keith Edwards University of Hawaii, Hilo Publicity Chair Eelco Herder L3S Research Center, Hannover, Germany
Organization Research Track Program Committee Sarabjot Anand University of Warwick, UK Kenro aihara National Institute of Informatics, J Japan Liliana ardissono University of Turin, Italy Lora aroyo Free University of Amsterdam Helen ashman University of South Australia, Australia Worcester Polytechnic Institute, USA Mathias bauer Mineway gmbH, germany Joseph Beck Worcester Polytechnic Institute, USA Shlomo Berkovsky CSIRO. Australia Maria bielikova Slovak University of Technology, Slovakia University of Pittsburgh, USA Susan bull University of Birmingham, UK Robin burke DePaul University USA Sandra carberry University of Delaware, USA Keith Cheverst Lancaster University, UK Li Chen Hong Kong Baptist University, China Sherry Chen Brunel University, UK Chien Chin Chen NTU. Taiwan David Chin University of Hawaii, USA Luca Chittaro University of Udine, Italy Cristina Conati University of British Columbia, Canada Owen Conlan Trinity College Dublin, Ireland Albert Corbett Carnegie Mellon University, USA Hugh davis University of Southampton, UK Paul De bra Eindhoven University of Technology, The Netherlands Michel desmarais Ecole Polytechnic de Montreal, Canada Vania dimitrova University of Leeds, UK Ben du b University of Sussex, UK Marco de gemmis University of Bari, Italy Peter olog Aalborg University, Denmark rge Garlatti ENST Bretagne, GET, france Elena gaudioso UNED, Spain Christina gena University of Turin, Italy Jim gree University of Saskatchewan, Canada Dominikus Heckmann Saarland University, Germany Nicola henze Leibniz Universitat Hannover, germany Eelco herder L3S Research Center Hannover, Germany Microsoft Research. USA Geert-Jan Houben Technische Universiteit Delft. The Netherlands Bin hu Lanzhou University, China TU Dortmund, germany Paul Kamsteeg Katholieke Universiteit Nijmegen, The Netherland
X Organization Research Track Program Committee Sarabjot Anand University of Warwick, UK Kenro Aihara National Institute of Informatics, Japan Liliana Ardissono University of Turin, Italy Lora Aroyo Free University of Amsterdam, The Netherlands Helen Ashman University of South Australia, Australia Ryan Baker Worcester Polytechnic Institute, USA Mathias Bauer Mineway GmbH, Germany Joseph Beck Worcester Polytechnic Institute, USA Shlomo Berkovsky CSIRO, Australia M´aria Bielikov´a Slovak University of Technology, Slovakia Peter Brusilovsky University of Pittsburgh, USA Susan Bull University of Birmingham, UK Robin Burke DePaul University, USA Sandra Carberry University of Delaware, USA Keith Cheverst Lancaster University, UK Li Chen Hong Kong Baptist University, China Sherry Chen Brunel University, UK Chien Chin Chen NTU, Taiwan David Chin University of Hawaii, USA Luca Chittaro University of Udine, Italy Cristina Conati University of British Columbia, Canada Owen Conlan Trinity College Dublin, Ireland Albert Corbett Carnegie Mellon University, USA Hugh Davis University of Southampton, UK Paul De Bra Eindhoven University of Technology, The Netherlands Michel Desmarais Ecole Polytechnic de Montreal, Canada Vania Dimitrova University of Leeds, UK Ben Du Boulay University of Sussex, UK Marco de Gemmis University of Bari, Italy Peter Dolog Aalborg University, Denmark Serge Garlatti ENST Bretagne, GET, France Elena Gaudioso UNED, Spain Christina Gena University of Turin, Italy Jim Greer University of Saskatchewan, Canada Dominikus Heckmann Saarland University, Germany Nicola Henze Leibniz Universit¨at Hannover, Germany Eelco Herder L3S Research Center Hannover, Germany Eric Horvitz Microsoft Research, USA Geert-Jan Houben Technische Universiteit Delft, The Netherlands Bin Hu Lanzhou University, China Dietmar Jannach TU Dortmund, Germany Paul Kamsteeg Katholieke Universiteit Nijmegen, The Netherlands
Organization dy K University of Sydney, Australia Alfred Kobsa UC Irvine. USA Antonio Krueger UNI-SB, Germany University of Haifa, Israel James Lester North Carolina State University, USA Henry Lieberman MIT USA Birkbeck College. UK Brent martin University of Canterbury, New Zealand Bhaskar mehta Alessandro micarelli University of Rome Ill, Ital Eva millar Univerisity of Malaga, spain Antonia Mitrovic University of Canterbury, New Zealand Dunja Mladenic . Stefan Institute. Slovenia Bamshad mobasher DePaul University USA wolfgang University of Hannover, Germany Hien Nguyen University of Wisconsin Whitewater. USA Michael O'Mahony University College Dublin. Ireland Georgios Paliouras NCSR Demokritos. Greece Christos Papatheodorou Ionian University, Greece Alexandros Paramythis FIM Institute Johannes Kepler University Cecile Paris CSIRO. Australia Paolo petta Austrian Res. Inst. for Artificial Intelligence, Austria Jose Luis Perez de la Cruz University of Malaga, Spai Dimitris pierrakos NCSR Demokritos. Greece Free University of Bozen-Bolzano, Italy Katharina reinecke University of Zurich, Switzerland Charles rich Worcester Polytechnic Institute, USA Cristobal Romero Morales Universidad de Cordoba, Spain Gustavo Gonzalez -Sanchez Mediapro R&D, Spain Daniel schwabe University of rio de janeiro, Brazil Barry Smyth University College Dublin, Ireland Marcus Specht Open University Netherlands The Netherlands Myra Spiliopoulou University of Magdeburg, Germany JulitaⅤ assileva Univeristy of Saskatchewan, Canada Sebastian ventura University of Cordoba, Spain Vincent Wade Trinity College Dublin, Ireland Gerhard Weber PH Freiburg, germany Stephan Weibelzahl National College of Ireland, Ireland Michael yudelson Univeristy of Pittsburgh, USA FBK-cit, Italy Diego Zapata-Rivera Educational Testing Service, US. Ingrid zukerman Monash University, Australia
Organization XI Judy Kay University of Sydney, Australia Alfred Kobsa UC Irvine, USA Antonio Krueger UNI - SB, Germany Tsvi Kuflik University of Haifa, Israel James Lester North Carolina State University, USA Henry Lieberman MIT, USA George Magoulas Birckbeck College, UK Brent Martin University of Canterbury, New Zealand Bhaskar Mehta Google, USA Alessandro Micarelli University of Rome III, Italy Eva Millan Univerisity of Malaga, Spain Antonija Mitrovi´c University of Canterbury, New Zealand Dunja Mladenic J. Stefan Institute, Slovenia Bamshad Mobasher DePaul University, USA Wolfgang Nejdl University of Hannover, Germany Hien Nguyen University of Wisconsin Whitewater, USA Michael O’Mahony University College Dublin, Ireland Georgios Paliouras NCSR Demokritos, Greece Christos Papatheodorou Ionian University, Greece Alexandros Paramythis FIM Institute Johannes Kepler University, Austria C´ecile Paris CSIRO, Australia Paolo Petta Austrian Res. Inst. for Artificial Intelligence, Austria Jose Luis Perez de la Cruz University of Malaga, Spain Dimitris Pierrakos NCSR Demokritos, Greece Francesco Ricci Free University of Bozen-Bolzano, Italy Katharina Reinecke University of Zurich, Switzerland Charles Rich Worcester Polytechnic Institute, USA Crist´obal Romero Morales Universidad de Cordoba, Spain Gustavo Gonzalez-Sanchez Mediapro R&D, Spain Daniel Schwabe University of Rio de Janeiro, Brazil Barry Smyth University College Dublin, Ireland Marcus Specht Open University Netherlands, The Netherlands Myra Spiliopoulou University of Magdeburg, Germany Julita Vassileva Univeristy of Saskatchewan, Canada Sebasti´an Ventura University of Cordoba, Spain Vincent Wade Trinity College Dublin, Ireland Gerhard Weber PH Freiburg, Germany Stephan Weibelzahl National College of Ireland, Ireland Michael Yudelson Univeristy of Pittsburgh, USA Massimo Zancanaro FBK - cit, Italy Diego Zapata-Rivera Educational Testing Service, USA Ingrid Zukerman Monash University, Australia
