Erik Duval is a professor in the research unit on hypermedia and databases of the Computer Science Department at the Katholieke Universiteit Leuven, Belgium. His research interests include metadata, learning objects, and a global learning infrastructure based on open standards and mass personalization ("The Snowflake Effect")—topics on which he regularly delivers keynote speeches. Dr. Duval teaches courses on human-computer interaction, multimedia modeling and programming, and problem solving and design. He is the president of the ARIADNE Foundation, chair of the IEEE Learning Technology Standards Committee working group on Learning Object Metadata, and a fellow of the AACE. He cofounded two spin-offs that apply research results for access to music and scientific output. He is a member of the IEEE Computer Society.
Ralf Klamma has a diploma degree and a doctoral degree, both in computer science, from the Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University. Currently, he leads the research group Metadata in Community Information Systems at RWTH Aachen University. He spent several months as a visiting fellow at the MIT Entrepreneurship Center of the Sloan School of Management, Massachusetts Institute of Technology, to experience entrepreneurship teaching and research. He is a project leader in the Media and Cultural Communication collaborative research center and was a work package leader for Social Software in the EU IST Network of Excellence on Professional Training PROLEARN. In addition, he is a member of the research clusters Ultra High Speed Mobile Information and Communication (UMIC) and Context-Adaptive Interaction in Knowledge-Intensive Processes (CONTICI). He had stand-in professorships for media informatics at the Technische Universität Chemnitz and dialog-oriented systems at the University of Passau. His research covers information systems theory, the application of information systems in engineering, cultural sciences, and virtual communities, social software, social network analysis, technology enhanced learning, geographic information systems, cultural heritage management, and new product development. He is the editor-in-chief of the Central European Information Server SunSITE CEUR, the PROLEARN Academy, and the Multimedia Metadata Community. He serves as an associate editor for international journals such as the International Journal of Applied Systemic Studies (IJASS), the International Journal of Technology Enhanced Learning (IJTEL), and the International Journal of Social and Humanistic Computing (IJSHC). He has also been a reviewer for international journals such as Communications of the ACM, IEEE Multimedia, IEEE Transactions on Knowledge and Data Engineering, IEEE Internet Computing, Information Systems, and Information Systems Frontiers, and conferences including ICIS, ECIS, CAiSE, CHI, EC-TEL, ACM GROUP, ACM Hypertext, CSCL and others. He is a member of the German Informatics Society (GI-29676).