Invited Expert

• World Wide Web Consortium (W3C) XQuery 1.0 and XPath 2.0 Full-Text.

Conference Vice-Chair

• International Conference on Data Engineering (ICDE), Tokyo, Japan, 2005. Semi-Structured Data and XML Track.

Program Committee

• International Conference on Very Large Data Bases (VLDB), Seoul, Korea, 2006.
• International XML Database Symposium (XSym), Seoul, Korea, 2006.
• VLDB PhD Workshop, Seoul, Korea, 2006.
• ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Philadelphia, Pennsylvania, 2006 (Industrial track committee).
• ACM SIGIR Conference on Research and Development on Information Retrieval, Seattle, Washington, 2006.
• ACM SIGMOD Conference on Management of Data, Chicago, Illinois, 2006 (Demo committee).
• International Workshop on XQuery Implementation, Experience and Perspectives (XIME-P), Chicago, Illinois, 2006.
• International Conference on Management of Data (COMAD), Hyderabad, India, 2005.
• Asian Computing Science Conference (ASIAN), Kunming, China, 2005.
• International Conference on Data Engineering (ICDE), Atlanta, Georgia, 2005.
• Symposium on String Processing and Information Retrieval (SPIRE), Buenos Aires, Argentina, 2005.
• VLDB PhD Workshop, Trondheim, Norway, 2005.
• International Workshop on XQuery Implementation, Experience and Perspectives (XIME-P), Baltimore, Maryland, 2005.
• International Workshop on the Web and Databases (WebDB), Baltimore, Maryland, 2005.
• ACM SIGMOD Conference on Management of Data, Baltimore, Maryland, 2005.
• Workshop on the Integration of Information Retrieval and Databases (WIRD), Sheffield, United Kingdom, 2004.
• International Workshop on XQuery Implementation, Experience and Perspectives (XIME-P), Paris, France, 2004.
• International Workshop on the Web and Databases (WebDB), Paris, France, 2004.
• International Conference on Data Engineering (ICDE), Boston, Massachusetts, 2004.
• ACM Symposium on Applied Computing (SAC), Nicosia, Cyprus, 2004.
• International Conference on Very Large Data Bases (VLDB), Berlin, Germany, 2003.
• ACM SIGMOD Conference on Management of Data, San Diego, California, 2003.
• International Conference on Data Base Programming Languages (DBPL), Potsdam, Germany, 2003.
• International Workshop on the Web and Databases (WebDB), San Diego, California, 2003.
• International Workshop on the Web and Databases (WebDB), Madison, Wisconsin, 2002.

Journal Reviewing

• ACM Transactions on Database Systems
• ACM Transactions on Internet Technology
• Data and Knowledge Engineering Journal
• IEEE Internet Computing
• IEEE Transactions on Knowledge and Data Engineering
• Information Retrieval
• Information Systems
• Software Practice and Experience
• The Computer Journal
• VLDB Journal

Grant Review Panels

• The Directorate for Computer and Information Science and Engineering (CISE), National Science Foundation, 2003.
• National Sciences and Engineering Research Council of Canada (NSERC), 2003.