Aug. 2017

General Chair

2017 IEEE/WIC/ACM International Conference on Web Intelligence (WI) in conjunction with 15th German Internation Conference on Multiagent Systems Technologies (MATES 2017).

Aug. 2017

General Co-Chair

28th Intl. Conference on Database and Expert Systems Applications (DEXA 2017).

May 2017

Organizing Committee

Semantic Web Solutions for Large-scale Biomedical Data Analytics (SeWeBMeDA-2017), workshop at 14 International European Semantic Web Conference (ESWC 2017).

Mar. 2017

Track (PC) co-chair

Semantic and Knowledge track - 26th World Wide Web Conference, 2017

Oct. 2015

Advisor

1st Joint Intl. Workshop on Semantic Sensor Networks and Terra Cognita (SSN-TC 2015) at ISWC205, October 11, 2015, Bethlehem, PA.

Oct. 2014

General Co-Chair

2nd Intl. Workshop on the Internet of Things (C-IoT 2014) at CollabCoM2014

Aug. 2011

Co-Chair

Mining Data Semantics Workshop (MDS 2011)

Jul. 2011

Director

Summer School on Service Oriented Computing (SummerSoc)

May 2011

Advisory Committee

Intl. Conference on Web Intelligence, Mining and Semantics (WIMS 2011)

Nov. 2010

Advisor

3rd Intl. Workshop on Semantic Sensor Networks (SSN10)

Sept. 2010

Co-Organizer

1st Intl. Workshop on Traceability and Compliance of Semi-Structured Processes (TC4SP2010) at BPM2010

Jan. 2010

Co-Organizer

Semantic Challenges in Sensor Networks

2008-2010

Co-Chair

W3C Semantic Sensor Networks Incubator Group

Nov. 2009

Program Co-Chair

Intl. Workshop on Community-Based Evolution of Knowledge-Intensive Systems (COMBEK'09)

Oct. 2009

Steering Committee Chair, Program Committee Member

2nd Intl. Workshop on Semantic Sensor Networks at 8th Intl. Semantic Web Conference (ISWC 2009)

May 2009

Steering Committee Chair, Program Committee Member

1st Intl. Workshop on the role of Semantic Web in Provenance Management at 8th Intl. Semantic Web Conference (ISWC 2009)

May 2009

Co-Organizer

Sensor Web Enablement

Nov. 2008

Scientific Steering Committee, Organizing Committee

Intl. Workshop on Community-Based Evolution of Knowledge-Intensive Systems (COMBEK '08)

Oct. 2008

Program Committee Chair

7th Intl. Semantic Web Conference (ISWC 2008)

Sept. 2008

Steering Committee Chair

Advances in Semantics for Web Services 2008 (semantics4ws 2008)

Jul. 2008

Steering Committee

2nd IEEE Intl. Conference on Semantic Computing (ICSC 2008))

Apr. 2008

Steering Committee

2nd Intl. Workshop on Web Service Composition and Adaptation (WSCA-2008) at 6th IEEE Intl. Conference on Services Computing (SCC-2008

Apr. 2008

Co-organizer

WWW08 Intl. Workshop on Context Enabled Source and Service Selection, Integration, and Adaptation (CSSSIA 2008)

Mar. 2008

Co-organizer

Association for the Advancement of Artificial Intelligence (AAAI) 2008, Spring Symposium.

Sept. 2007

Co-organizer

2nd Workshop on Advances in Semantics for Web Services (semantics4ws'07) at BPM 2007

Jul. 2007

General Chair

4th Intl. Workshop on Semantic Web for Services and Processes (SWSP 07) at IEEE Intl. Conference on Web Services

Jul. 2007

Co-organizer

1st Intl. Workshop on Web Service Composition and Adaptation (WSCA-2007) at IEEE Intl. Conference on Web Services

Feb. 2007

Co-Organizer

Autonomic Web Services: Dagstuhl Seminar 07061

Nov. 2006

Industry Track Chair, Sponsorship Chair

5th Intl. Semantic Web Conference

Sept. 2006

Program Co-Chair

4th Intl. Conference on Business Process Management (BPM 2006)

Sept. 2006

General Chair

3rd Intl. Workshop on Semantic and Dynamic Web Processes (SWDP2006)

Sept. 2006

Program Committee Chair

4th Intl. Conference on Business Process Management (BPM 2006)

Sept. 2006

Co-organizer, Program Committee Chair

Advances in Semantics for Web Services Workshop (semantics4ws'06) at BMP 2006

Aug. 2006

Co-organizer

SIG on Semantic Web and Information Systems (mini-track) at 12th Americas Conference on Information Systems

Jul. 2006

Program Co-Chair

AI-Driven Technologies for Services-Oriented Computing (AAAI-06 Workshop)

Jul. 2006

Organization Committee

Intl. Workshop on Distributed Applications for B2B Integration (DABI 2006) at 26th ICDC

Jun. 2006

Organizing Committee

ESWC'06 Industry Forum Day Business Applications of Semantic Web technology

Apr. 2006

General Chair

3rd Intl. Workshop on Semantic Web and Databases (ICDE SWDB '06) at ICDE 2006

Apr. 2006

Program Committee Co-chair

Intl. Workshop on Semantics enabled Networks and Services (ICDE SeNS 2006) at ICDE2006

Mar. 2006

Co-organizer

Semantic Web meets eGovernment at AAAI Spring Symposium Series (SSS-06)

Dec. 2005

Co-chair

Organization Committee, Intl. Workshop in Dynamic Web Processes (DWP 2005) at ICSOC 2005

Jul. 2005

Co-chair

2nd Intl. Workshop on Semantic and Dynamic Web Processes (SDWP 2005)

Sept. 2004

Co-organizer

Semantic Interoperability and Integration: Dagstuhl Seminar 04391

Sept. 2004

Program Co-Chair

2004 IEEE Intl. Conference on Services Computing (SCC 2004)

Jul. 2004

Co-organizer

1st Intl. Workshop on Semantic Web Services and Web Process Composition (SWSWPC 2004)

Mar. - Aril 2004

Co-organizer

NASA Workshop on the Knowledge Integrating Virtual Iron Bird

Nov. 2003

Co-Chair

UCGIS Homeland Security Workshop

May 2002

Co-Chair

Workgroup on Semantic Web, NSF 2002 Workshop on Information and Data Management

Apr. 2002

Organizer/Chair

NSF-EU Invitational Workshop on Database and Information Systems Research for Semantic Web and Enterprises

May 2001

Co-Organizer

2nd Intl. Workshop on the Semantic Web (SemWeb 2001) at WWW10

May 2000

Program Co-Chair

IEEE conference on Advances in Digital Library

Aug. 1997

Co-Director

NATO Advanced Study Institute on Workflow Systems and Interoperability

Jun. 1996

General (Co-)Chair

1st Intl. Conference on Interoperable and Cooperative Information Systems (CoopIS '96)

May 1996

Program Chair, Organizing Committee Chair

NSF workshop on Workflow and Process Automation: State-of-the-art and Future Directions

1994

Program (Co-)Chair

3rd Intl. Conference on Parallel and Distributed Information Systems

1994

Program Vice Chair

Technology and Applications Track, 10th Intl. Conference on Data Engineering

Apr. 1993

Program (Co-)Chair

3rd RIDE-Intl. Workshop on Interoperability in Multidatabase Systems

1991

General Chair

1st Intl. Conference on Parallel and Distributed Information Systems

1990

Program Vice-Chair

6th IEEE Intl. Conference on Data Engineering

1990

Chair

Workshop on Management of Interdependent Data in Bellcore and BCCS

1989

Program Vice-Chair

5th IEEE Intl. Conference on Data Engineering