E-Commerce and Web Technologies

1. Front Matter

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2. Recommender Systems

   1. Using Attributes to Improve Prediction Quality in Collaborative Filtering

      • Taek-Hun Kim, Sung-Bong Yang

      Pages 1-10

   2. Using Association Analysis of Web Data in Recommender Systems

      • María N. Moreno, Francisco J. García, M. José Polo, Vivian F. López

      Pages 11-20

   3. An Intelligent System for Personalized Advertising on the Internet

      • Sung Ho Ha

      Pages 21-30

   4. Supporting User Query Relaxation in a Recommender System

      • Nader Mirzadeh, Francesco Ricci, Mukesh Bansal

      Pages 31-40

3. Databases and EC Applications

   1. Accelerating Database Processing at e-Commerce Sites

      • Seunglak Choi, Jinwon Lee, Su Myeon Kim, Junehwa Song, Yoon-Joon Lee

      Pages 41-50

   2. Optimized Query Delivery in Distributed Electronic Markets

      • Stefan Böttcher, Dimiter Dimitriev

      Pages 51-65

   3. Uniform Access to Data in Workflows

      • Johann Eder, Marek Lehmann

      Pages 66-75

4. Service-Oriented e-Commerce Applications

   1. Formal Verification of BPEL4WS Business Collaborations

      • Jesús Arias Fisteus, Luis Sánchez Fernández, Carlos Delgado Kloos

      Pages 76-85

   2. Seamless Federation of Heterogeneous Service Registries

      • Thomi Pilioura, Georgios-Dimitrios Kapos, Aphrodite Tsalgatidou

      Pages 86-95

   3. A Survey of Public Web Services

      • Su Myeon Kim, Marcel-Catalin Rosu

      Pages 96-105

5. Electronic Negotiation Systems

   1. Protocols for Electronic Negotiation Systems: Theoretical Foundations and Design Issues

      • Gregory E. Kersten, Stefan E. Strecker, Ka Pong Law

      Pages 106-115

   2. Implementing Complex Market Structures with MetaMarkets

      • Juho Mäkiö, Ilka Weber

      Pages 116-125

   3. Evaluation of an Online Multidimensional Auction System: A Computer Simulation Investigation

      • Sungwon Cho, Kyoung Jun Lee, Martha E. Crosby, David N. Chin

      Pages 126-134

   4. Electronic Negotiations – A Generic Approach with Action Systems

      • Juho Mäkiö, Ilka Weber, Christof Weinhardt

      Pages 135-143

6. Security and Trust in e-Commerce

   1. Interaction Trust Evaluation in Decentralized Environments

      • Yan Wang, Vijay Varadharajan

      Pages 144-153

   2. Towards a Privacy Preserving e-Commerce Protocol

      • Indrajit Ray, Mike Geisterfer

      Pages 154-163

   3. Using Recoverable Key Commitment to Defend Against Truncation Attacks in Mobile Agents

      • Ming Yao, Kun Peng, Matt Henricksen, Ernest Foo, Ed Dawson

      Pages 164-173

7. Techniques for B2B e-Commerce

   1. OCL-Constraints for UMM Business Collaborations

      • Birgit Hofreiter, Christian Huemer, Werner Winiwarter

      Pages 174-185

   2. Use and Extension of ebXML Business Profiles for Textile/Clothing Firms

      • Nicola Gessa, Cristiano Novelli, Massimo Busuoli, Fabio Vitali

      Pages 186-195

We welcome you to the proceedings of the 5t International Conference on E- CommerceandWebTechnology(EC-Web2004)heldinconjunctionwithDEXA 2004 in Zaragoza, Spain. This conference, ?rst held in Greenwich, United Ki- dom in 2000, now is in its ?fth year and very well established. As in the four previous years, it served as a forum to bring together researchersfrom academia and commercial developers from industry to discuss the current state of the art in e-commerce and Web technology. Inspirations and new ideas emerged from intensive discussions during formal sessions and social events. Keynote addresses, research presentations and discussions during the c- ference helped to further develop the exchange of ideas among the researchers, developers and practitioners present. The conference attracted 103 paper submissions and almost every paper was reviewed by three program committee members. The program committee - lected 37 papers for presentationand publication, a task which was not easy due to the high quality of the submitted papers. We would like to express our thanks to our colleagues who helped with putting together the technical program: the program committee members and external reviewers for their timely and rigorous reviews of the papers, and the organizing committee for their help in the administrative work and support. We owe special thanks to Gabriela Wagner, Mirella Köster, and Birgit Hauer for their helping hands concerning the administrative and organizational tasks of this conference. Finally,wewouldliketothankalltheauthorswhosubmittedpapers,authors who presented papers, and the participants who together made this conference an intellectually stimulating event through their active contributions.

• Recommender Systems
• databases
• e-commerce
• electronic commerce
• modeling
• security
• trust

• Department of Informatics (IFI), University of Zurich, Zurich, Switzerland

  Kurt Bauknecht

• Internet-based Information Systems, Technische Universität München,  

  Martin Bichler

• Johannes Kepler Universität Linz, Linz

  Birgit Pröll

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