Lecture Notes in Computer Science 2232 Edited by G. Goos, J. Hartmanis, and J. van Leeuwen

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1 Lecture Notes in Computer Science 2232 Edited by G. Goos, J. Hartmanis, and J. van Leeuwen

2 3 Berlin Heidelberg New York Barcelona Hong Kong London Milan Paris Tokyo

3 Ludger Fiege Gero Mühl Uwe Wilhelm (Eds.) Electronic Commerce Second International Workshop, WELCOM2001 Heidelberg, Germany, November 16-17, 2001 Proceedings 13

4 Series Editors Gerhard Goos, Karlsruhe University, Germany Juris Hartmanis, Cornell University, NY, USA Jan van Leeuwen, Utrecht University, The Netherlands Volume Editors Ludger Fiege Gero Mühl Darmstadt University of Technology Wilhelminenstr. 7, Darmstadt, Germany Uwe Wilhelm T-Nova Otto-Röhm-Str. 71C, Darmstadt, Germany Cataloging-in-Publication Data applied for Die Deutsche Bibliothek - CIP-Einheitsaufnahme Electronic commerce : second international workshop ; proceedings / WELCOM 2001, Heidelberg, Germany, November 16-17, Ludger Fiege... (ed.). - Berlin ; Heidelberg ; New York ; Barcelona ; Hong Kong ; London ; Milan ; Paris ; Tokyo : Springer, 2001 (Lecture notes in computer science ; Vol. 2232) ISBN X CR Subject Classification (1998): K.4.4, C.2, I.2.11, H.3, J.1, K.6.5, E.3 ISSN ISBN X Springer-Verlag 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-Verlag. Violations are liable for prosecution under the German Copyright Law. Springer-Verlag Berlin Heidelberg New York a member of BertelsmannSpringer Science+Business Media GmbH Springer-Verlag Berlin Heidelberg 2001 Printed in Germany Typesetting: Camera-ready by author, data conversion by PTP-Berlin, Stefan Sossna Printed on acid-free paper SPIN: /

5 Message from the Organizers It is with great pleasure that we welcome you to WELCOM The Workshop on Electronic Commerce was first heldin 1999 as a one-day workshop in conjunction with the 18th IEEE Symposium on Reliable anddistributedsystems (SRDS) in Lausanne. This first workshop provedquite successful for the organizers as well as the authors, a fact that is reflectedin the continuedparticipation of at least seven authors. Both the scope andthe size of the workshop have been extendedfor the secondevent, which was heldduring two days (November 16-17, 2001) in Heidelberg andfeaturedtwo invitedtalks (one of them industrial) as well as a panel on e-services. This year, 36 papers from 14 countries aroundthe worldwere submittedfor consideration. Of these, the program committee selected 17 papers for inclusion in the workshop. These papers cover a wide range of interesting topics that were grouped under five major headings: Trade and Markets, Auctions, Security and Trust, Profiling, andbusiness Interaction. The organizers want to thank the authors andthe program committee for their work in preparing the technical program for WELCOM 2001 as well as the presenters of the invitedtalks, the panelists, andthe organizer of the panel for their efforts. Last andforemost we thank the participants for making WELCOM 2001 a successful event. November 2001 Ludger Fiege Gero Mühl Uwe G. Wilhelm

6 Organization WELCOM 2001 was organizedby Darmstadt University of Technology in cooperation with the German Informatics Society (GI/EMISA). Workshop Chairs Ludger Fiege Gero Mühl Uwe Wilhelm TU Darmstadt TU Darmstadt T-Systems Nova GmbH Darmstadt, Germany Darmstadt, Germany Darmstadt, Germany Program Committee Gustavo Alonso, ETH Zürich, Switzerland Jan Boluminski, Loyalty Partner, Germany Alejandro Buchmann, TU Darmstadt, Germany Clemens Cap, U. Rostock, Germany Fabio Casati, HP Labs, USA Peter Fankhauser, GMD-IPSI, Germany Oliver Günther, HU Berlin, Germany Stefan Jablonski, U. Erlangen, Germany Ravi Jain, Telcordia, USA Christian S. Jensen, Aalborg University, Denmark Günter Karjoth, IBM, Switzerland Ramayya Krishnan, CMU, USA Josef Küng, U. Linz, Austria WinfriedLamersdorf, U. Hamburg, Germany Cliff Leung, IBM, USA Günther Müller, U. Freiburg, Germany Stefan Noll, FhG-IGD, Germany Andreas Oberweis, U. Frankfurt, Germany M. Tamer Özsu, U. Waterloo, Canada Sachar Paulus, SAP, Germany Joachim Posegga, SAP, Germany Krithi Ramamritham, U. of Massachusetts, USA Mike Reiter, Bell-Labs, USA André Schiper, EPFL Lausanne, Switzerland Hartmut Vogler, SAP Labs, USA GottfriedVossen, U. Münster, Germany

7 VIII Organization Main Sponsor Deutsche Telekom!" ==Systems=== Supported by German Informatics Society (GI) GI Chapter (EMISA) PhD Program Enabling Technologies for Electronic Commerce TU Darmstadt

8 Table of Contents Invited Talks Process BasedE-services... 1 Amaia Lazcano, Gustavo Alonso Digital Rights Management - Dealmaker for E-business? Stephan Heuser Panel E-services: The Next Wave of Internet-BasedApplications Alejandro Buchmann Trade / Markets A New M-commerce Concept: m-mall Jaime García-Reinoso, Javier Vales-Alonso, Francisco J. González-Castaño, Luis Anido-Rifón, Pedro S. Rodríguez-Hernández Building Comparison-Shopping Brokers on the Web Simone C. dos Santos, Sérgio Angelim, Silvio R.L. Meira TrustedMediation for E-service Provision in Electronic Marketplaces Giacomo Piccinelli, Cesare Stefanelli, David Trastour GAMA-Mall Shopping in Communities Till Schümmer Markets without Makers -A Framework for DecentralizedEconomic Coordination in Multiagent Systems Torsten Eymann Incentives for Sharing in Peer-to-Peer Networks Philippe Golle, Kevin Leyton-Brown, Ilya Mironov, Mark Lillibridge Security / Trust Mobile Payments State of the Art andopen Problems Konrad Wrona, Marko Schuba, Guido Zavagli Using Smart Cards for Fair Exchange Holger Vogt, Henning Pagnia, Felix C. Gärtner

9 X Table of Contents Rational Exchange A Formal Model Based on Game Theory Levente Buttyán, Jean-Pierre Hubaux Enabling Privacy Protection in E-commerce Applications Dennis Kügler Auctions FAucS: An FCC Spectrum Auction Simulator for Autonomous Bidding Agents János A. Csirik, Michael L. Littman, Satinder Singh, Peter Stone A Dynamic Programming Model for Algorithm Design in Simultaneous Auctions Andrew Byde Profiling User Modelling for Live Help Systems Johan Aberg, Nahid Shahmehri, Dennis Maciuszek Multidimensional Recommender Systems: A Data Warehousing Approach Gediminas Adomavicius, Alexander Tuzhilin Business Interaction A Multi-criteria Taxonomy of Business Models in Electronic Commerce Andreas Bartelt, Winfried Lamersdorf Integration of Goods Delivery Supervision into E-commerce Supply Chain Anke Thede, Albrecht Schmidt, Christian Merz Scalable Regulation of Inter-enterprise Electronic Commerce Naftaly H. Minsky, Victoria Ungureanu Author Index...233