Professional Activities
Conferences
  1. 18th International World Wide Web Conference (WWW-2009), 2009. PC member.
  2. International Conference on Very Large Data Bases (VLDB'2009), 2009. PC member.
  3. IEEE International Conference on Data Engineering (ICDE'09), 2009, PC member.
  4. International Conference on Management of Data (SIGMOD'09), 2009. PC member.
  5. The 10th International Conference on Mobile Data Management (MDM'09), 2009. Industrial PC member.
  6. International Conference on Very Large Data Bases (VLDB'2008), 2008. Core DB PC Chair.
  7. 17th International World Wide Web Conference (WWW-2008), 2008. PC member.
  8. IEEE International Conference on Data Engineering (ICDE'08), 2008. Demo track PC member.
  9. Australian Database Conference (ADC'08), 2008. PC member.
  10. International Conference on Extending DataBase Technology (EDBT'2008), 2008. PC member.
  11. 16th ACM International Symposium on Advances in Geographic Information Systems (ACM GIS 2008). 2008. PC member.
  12. past activities: 1992-2007
Journals
  1. IEEE Transactions on Knowledge and Data Engineering, Editor-in-Chief, 2009-2010
  2. Distributed and Parallel Databases, Springer. Editor, 2008-.
  3. IEEE Transactions on Knowledge and Data Engineering, Editor, 2003-2007
  4. VLDB Journal, Springer Verlag, Editor, 2002-2007
  5. International Journal of Geographical Information Systems (Taylor&Francis). Editor, 1995-2005
  6. Geoinformatica (Kluwer Academics). Editor, 1997--2005
Trustee
  1. VLDB Endowment, Trustee board member. 2006-2011.
Others
  1. SIGMOD Jim Gray Best Thesis Award committee, co-Chair, 2008-2011. (Committee member. 2005-2008)
  2. Evaluator for promotion/new hire cases for various Universities in Taiwan, US, Canada
  3. Evaluator for Grant Proposals for various overseas funding agencies