Guest editor of Decision Support Systems (DSS), Special Issue on Multilingual Knowledge Management, to appear.
Guest editor of the Journal of the American Society for Information Science and Technology (JASIST), Special Topic Issue on Mining Web Resources for Enhancing Information Retrieval, 2007.
Guest editor of the Journal of the American Society for Information Science and Technology (JASIST), Special Topic Issue on Multilingual Information Systems, February, 2006.
Editor, Intelligence and Security Informations: Techniques and Applications, Springer Verlag, 2008.
Program chair, IEEE International Conference on Intelligence and Security Informatics, Taipei, Taiwan, 2008.
Workshop general chair, Pacific Asia Workshop on Intelligence and Security Informatics, China, 2007.
Workshop general chair, Workshop on Intelligence and Security Informatics, Singapore, 2006.
Track Chair, Software and Data Engineering Track, Pacific Asia Conference on Information Systems, Malaysia, 2006.
Panel Chair, Workshop on E-Business, Las Vegas, 2005.
Invited Panelist of the Review Panel in the National Science Foundation, USA.
and more ...