Professional Activities

• Program Committee member of the Joint International Conference on APWeb 2009 and WAIM 2009.
• Panelist on System Building: How Does It Help or Hinder Rresearch? International Conference on Web-Age Information Management, 2008.
• Program Committee member of the Fourth International Conference on Advanced Data Mining and Applications (ADMA), 2008.
• Program Committee member of the First International Workshop on the Semantic Web meets the Deep Web (SWDW), 2008.
• Program Committee member of the IEEE International Conference on Web Services (ICWS), 2008.
• Program Committee member of the Seventeenth ACM Conference on Information and Knowledge Management (CIKM), 2008.
• Program Committee Co-Chair of the Ninth International Conference on Web-Age Information Management (WAIM), 2008.
• Program Committee member of the 10th Asia Pacific Web Conference (APWeb), 2008.
• Program Committee member of the World Wide Web conference (WWW in China track), 2008.
• Program Committee member of the Sixteenth ACM Conference on Information and Knowledge Management (CIKM), 2007.
• Session chair at the 2007 ACM SIGMOD International Conference on Management of Data (SIGMOD), 2007.
• Program Committee member of the SIGMOD2007 PhD Workshop on Innovative Database Research (IDAR2007), 2007.
• Program Committee member of the International Workshop on Information Integration on the Web (IIWeb'07), 2007.
• Session chair at the Joint International Conference on APWeb 2007 and WAIM 2007.
• Program Committee member of the Joint International Conference on APWeb 2007 and WAIM 2007.
• Program Committee member of the International Conference on Database Systems for Advanced Applications (DASFAA), 2007.
• Program Committee member of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI), 2006.
• Program Committee member of the Fifteenth ACM Conference on Information and Knowledge Management (CIKM), 2006.
• Program Committee member of the Seventh International Conference on Web-Age Information Management (WAIM), 2006.
• Program Committee member of Second International Workshop on Challenges in Web Information Retrieval and Integration (WIRI), 2006.
• Program Committee member of the Asia Pacific Web Conference (APWeb), 2006.
• Program Committee member of the International Conference on Database Systems for Advanced Applications (DASFAA), 2006.
• Session chair at the International Conference on Web Information Systems Engineering (WISE'05)
• General Co-Chair of the Sixth International Conference on Web-Age Information Management (WAIM), 2005.
• Panelist on Research Issues in Database and Information Retrieval, International Conference on Web-Age Information Management, 2005.
• Session chair at the International Conference on Web-Age Information Management (WAIM), 2005.
• Program Committee member of the International Conference on Very Large Data Bases (VLDB), 2005.
• Program Committee member of the International Conference on Database Systems for Advanced Applications (DASFAA), 2005.
• Program Committee member of the Asia Pacific Web Conference (APWeb), 2005.
• Program Committee member of the National Database Conference of China, 2004.
• Program Committee member of the Asia Pacific Web Conference (APWeb), 2004.
• Session chair at the International Workshop on Web Information and Data Management (WIDM'04)
• Program Committee member of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI), 2003.
• Session chair at the IEEE International Conference on Tools with Artificial Intelligence (ICTAI'03)
• Program Committee member of the Sixth International Conference on Web-Age Information Management (WAIM), 2003.
• Panelist on Research Issues in Web Aged Information Management, International Conference on Web-Age Information Management, 2003.
• Session chair at the International Conference on Web-Age Information Management (WAIM), 2003.
• Program Committee member of the International Workshop on Web information and Data Management (WIDM), 2002.
• Treasurer of the 12th ACM Great Lake Symposium on VLSI, 2002.
• Program Committee member of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI), 2002.
• Program Committee member of the International Workshop on Web Information and Data Management (WIDM), 2001.
• Program Committee member of the International Conference on Database Systems for Advanced Applications (DASFAA), 2001.
• Program Committee member of the IEEE International Symposium on Autonomous Decentralized Systems, 2001.
• Program Committee member of the Sixth International Conference on Web-Age Information Management (WAIM), 2001.
• Member of Organizing Committee of the International Conference on Information Society in the 21 Century: Emerging Technologies and New Challenges (IS2000), 2000.
• Program Committee member of the Tenth International Database Symposium on Mobile, XML and Post-Relational (IDS2000), 2000.
• Program Committee member of the International Conference on Web Information System Engineering (WISE), 2000.
• Program Committee member of the National Database Conference of China, 2000.
• Program Committee Chair of the Eleventh IEEE International Conference on Tools with Artificial Intelligence (ICTAI), 1999.
• Program Committee member of the International Conference on Database Systems for Advanced Applications (DASFAA), 1999.
• Program Committee member of the Fifth International Computer Science Conference (ICSC), 1999.
• Program Committee member of the International Symposium on Database, Web and Cooperative Systems (DWACOS), 1999.
• Panelist on Convergence of Technologies on the Web: the Case of Distributed Artificial Intelligence, Databases and Information Retrieval. IEEE Knowledge and Data Engineering Exchange Workshop (KDEX), 1999.
• Program Committee member of the Second International Conference on Multimedia Information Systems (ICMIS), 1997.
• Program Committee member of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI), 1993.

Lectures/Tutorials

• Instructor of VLDB School (China) on Web Database Integration, 5 hours, 2008.
• Instructor of VLDB School (China) on Information Retrieval: Technology and Advanced Applications (3 days), 2004.
• Tutorial instructor on Metasearch Engines - Current Status and New Challenges, International Conference on Web Age Information Management, 2003.
• Lecture on Web Data Management (1.5 days). Database Society of Chinese Computer Federation, Beijing, 2000.
• Tutorial instructor on Searching from Distributed Heterogeneous Text Sources. International Conference on Web Information System Engineering, 2000
• Tutorial instructor on Searching from Multiple Text Sources in the Internet. ACM International Conference on Digital Libraries, 1999 (with Clement Yu).
• Tutorial instructor on Metasearch Engine: Solutions and Challenges. International Conference on Very Large Data Bases, 1999 (with Clement Yu).

Editorial Services

• Encyclopedia of Database Systems (responsible for area "IR Evaluation Measures"), 2007-2008.
• Editorial Board of Journal of Database Management, 2001 - present
• Guest Editor on International Journal on Artificial Intelligence Tools, June 2000
• Guest Editor of IEEE Software (with Clement Yu), May 1994

Referee/Reviewer

• IEEE Transactions on Knowledge and Data Engineering (TKDE)
• IEEE Transactions on Parallel and Distributed Systems (TPDS)
• IEEE Transactions on Systems, Man and Cybernetics (TSMC)
• IEEE Transactions on Computers (TC)
• ACM Transactions on Database Systems (TODS)
• ACM Transactions on Information Systems (TOIS)
• ACM Transactions on Internet Technologies (TOIT)
• ACM Computing Surveys
• Journal of Distributed and Parallel Databases
• Journal of Database Management (JDM)
• Journal of Knowledge and Information Systems (KAIS)
• International Journal of Cooperative Information Systems (IJCIS)
• Information and Software Technology
• Software Practice and Experience
• IEEE Software
• Data & Knowledge Engineering Journal
• World Wide Web Journal
• Computer Journal
• Journal of Information Science and Engineering
• Computer Networks Journal
• Journal of Computer Science and Technology
• International Conference on Very Large Data Bases (VLDB)
• IEEE International Conference on Data Engineering (ICDE)
• International Conference on Management of Data (ACM SIGMOD)
• International Conference on Tools with Artificial Intelligence (ICTAI)
• International Symposium on Applied Computing
• International Conference on Multimedia Information Systems
• International Conference on Database Systems for Advanced Applications (DASFAA)
• International Computer Science Conference
• International Symposium on Database, Web and Cooperative Systems
• International Conference on Web Information Systems Engineering (WISE)
• ACM International Conference on Information and Knowledge Management (CIKM)
• IEEE International Conference on Web Services (ICWS)
• International Database Symposium on Mobile, XML and Post-Relational Databases
• International Conference on Information Society in the 21st Century
• IEEE International Symposium on Autonomous Decentralized Systems
• International Conference on Web-Age Information Management (WAIM)
• ACM CIKM International Workshop on Web Information and Data Management (WIDM)
• The Asia Pacific Web Conference (APWeb)
• International Conference on Advanced Data Mining and Applications (ADMA)
• International Workshop on Challenges in Web Information Retrieval and Integration (WIRI).
• ACM SIGMOD PhD Workshop on Innovative Database Research
• International Workshop on Information Integration on the Web (IIWeb)
• International Workshop on the Semantic Web meets the Deep Web (SWDW)
• Research Proposal for Israel Science Foundation
• Research proposal for Research Grants Council of Hong Kong
• Research Proposals for National Science Foundation