Reviewer, 12th International Conference on Information Visualisation (IV) 2008, July 2008, London, UK
Reviewer, the 11th International Conference on Extending Database Technology (EDBT 2008), March 2008, Nantes, France.
Reviewer, IEEE Pacific Visualization Symposium (PacificVis) 2008, March 2008, Kyoto, Japan.
Reviewer, IEEE Transactions on Knowledge and Data Engineering (TKDE), 2007.
Reviewers, ACM Transactions on Information Systems, 2007.
Reviewer, 22nd International Conference on Data Engineering (ICDE 2006), April 2006, Atlanta, USA.
Program committee member, the Eighth Asia Pacific Web Conference (APweb 2006), January 2006, Harbin, China.
Program committee member, the Seventh Asia Pacific Web Conference (APweb 2005), March 2005, Shanghai, China.
Program committee member, First International Workshop on Conceptual Modeling for Geographic Information Systems (CoMoGIS 2004), in conjunction with International Conference on Conceptual Modeling (ER) 2004, November 2004, Shanghai, China.