Adaptive Information Management & Recommendation Systems

Ontology-based User and Context Modeling

Semantic Interoperability

Task-based Information Retrieval

Application of Semantic Web Technologies for e-Learning and e-culture

Concept Structures (Ontologies, Conceptual Graphs, Concept Maps, Topic Maps)

Authoring of Adaptive Web-based Information Systems, Web-based Educational Systems (ITS, KBS)

Co-chair:

	SW-EL Workshop: Applications of Semantic Web Technologies for E-Learning (2004, 2005, 2006)
	Semantic Web Personalization Workshop @ ESWC'06 Conference
	PerSWeb'05 Workshop: Personalization on the Semantic Web
	WOSE'05 Workshop: Ontologies, Semantics and E-learning
	Doctoral Consortium @ ISWC'06 Conference
	Education Track @ WWW'05 Conference
	Interactive Events @ AIED'05 Conference
	AH'2004 Workshops and Tutorials: Adaptive Hypermedia and Web-based Systems (AH’04) Conference
	Workshop on Concepts and Ontologies in Web-based Educational Systems, ICCE'02

PC member:

	International Conference on Adaptive Hypermedia and Adaptive Web-Based Systems (AH'06)
	International World Wide Web Conference (WWW'06)
	International Conference on Intelligent Tutoring Systems (ITS'06)
	International Semantic Web Conference (ISWC'05), Galway, Ireland, 6-1 November, 2005
	International User Modeling Conference (UM'05), Edinburgh, Scotland, UK, 24-30 July, 2005
	International World Wide Web Conference (WWW'05), Chiba, Japan, 10-14 May, 2005
	IEEE ICALT: Advanced Learning Technologies Conference (2004, 2005)
	IEEE/ACM WI: Web Intelligence and Intelligent Agent Technologies Conference (2004, 2005, 2006)
	AACE E-Learn: E-Learning in Corporate, Government, Healthcare & Higher Education  (2004, 2005)
	IFIP AI'06: IFIP TC12 and WG12.5 -- Conference on Artificial Intelligence
	IFIP AIAI: Artificial Intelligence Applications and Innovations (2004, 2005)
	ACM SAC’04: Track on Engineering e-Learning Systems (ELS)
	e-Society’04
	IKE'04: Information and Knowledge Engineering
	ICAI: Artificial Intelligence (2002, 2004)
	OOIS'03: Object-Oriented Information Systems
	WOSE: OTM 2004 Workshop on Ontologies, Semantics and E learning (2004, 2005)
	AH'03: Adaptive Hypermedia and Adaptive Web-Based Systems Workshop

Reviewer for international conferences:

	AACE Conf. on E-Learning in Corporate, Government, Healthcare & Higher Education (E-Learn'03)
	AAAI Spring Symposium on Agent-Mediated Knowledge Management (AMKM'03)
	Int. Conf. on Advanced Learning Technologies (ICALT'03, 04)
	All the refereed conferences and workshops mentioned above

Reviewer for international journals:

	Journal of Interactive Learning Research (JILR, AACE)
	Continuing Engineering Education and Life-long Learning (IJCEELL)
	Journal of Science of Computer Programming (SCP, Elsevier), Special Issue on New Software Composition Concepts
	Data and Knowledge Engineering
	Science of Computer Programming
	IEEE Learning Technology Task Force

Editorial activities:

	Guest Editor of Special Issue on Intelligent Educational Systems of the IEEE Intelligent Systems Journal, 2007.
	Guest Editor of Special Issue on Application of Semantic Web Technologies in E-learning, IJCEELL, Vol. 16, 1/2, 2006.
	Guest Editor of Special Issue on Concept and Ontologies in Web-based Educational Systems, IJCEELL, Vol. 14, 3, 2004.
	Guest Editor of Special Issue on Software Agents in Education, IJCEELL, Volume 12, 3/4, 2002.
	Guest Editor of Special Issue on Intelligent Agents for Education and Training Systems, JIRL, Vol. 10, 3/4, 2001.
	Journal associate for the International Journal of Continuing Engineering Education and Life-long Learning (IJCEELL)

Member:

	Int. Society of Artificial Intelligence in Education (IAIED member)
	Association for Advancement of Computing in Education (AACE member)
	IFETS and IEEE Learning Technology Task Force
	SIKS Research School, The Netherlands