Professional Activities
Editor in Chief
- Journal of Web Semantics: Science, Services and Agents on the World Wide Web (JWS)
Editorial Board Membership
- ACM Transactions on Intelligent Interactive Systems (TIIS)
- ACM Transactions on Internet Technology> (TOIT)
- Informatik Spektrum by Springer (http://www.springer.com/computer/journal/287)
Former Editorial Board Membership
- International Journal on Semantic Web and Information Systems (IJSWIS, also http://www.ijswis.org/)
- Journal of the Association for Information Systems (JAIS)
- Journal of Web Semantics: Science, Services and Agents on the World Wide Web (JWS)
Executive Board
Conference Officer
General Chair
Program Chair / Program Co-Chair (major conferences)
Program Vice Chair
Programm Track Chair
- WWW Semantic Web Track, 2011
- RDBS Track; International Semantic Web Conference (ISCW), 2014
Program Chair / Program Co-Chair (workshops)
- CSCW’98 Workshop ”Towards Adaptive Workflow Systems”
- CSCW’2000 Workshop ”Beyond Workflow Management: Supporting Dynamic Organizational Processes”
- ISWC’05 Workshop on Semantic Web End User Interaction (SWUI’05)
- ISWC’06 Workshop on Semantic Web User Interaction (SWUI’06)
- Workshop on Semantic Web User Interaction (SWUI’07) at the University of Zurich
- ECML/PKDD’07 Workshop on Planing to Learn (PlanLearn’07)
- CHI’08 Workshop on Semantic Web User Interaction (SWUI’08)
- ICML/COLT’08 Workshop on Planing to Learn (PlanLearn’08)