- Invited to give a talk
in the Technical University of Madrid in Spain (during my PhD study in
Nov '97)
- Invited to the Chinese University
of Hong Kong for research collaboration
with A/P Jimmy Lee and A/P Peter Stuckey (on June 9-13 '99)
- Invited to the University of Melbourne for research
collaboration with A/P Peter Stuckey (on Nov 15-20 '99)
- Invited to the
University of Essex, UK for research collaboration with Professor Edward
Tsang (on Apr 8-20 '00),

and gave 2 talks to their Constraint Satisfaction Group on April
14, 2000.
- Invite A/P Peter Stuckey
from the University
of Melbourne to
visit NUS for collaboration (in June '99);
- Invited to the Japan Advanced
Institute of Science and Technology, Japan (JAIST, 2002)
- Invite Professor
Sugiyama to visit HKU in both 2003 and 2007 respectively

- Invite Mr. Joseph Shih (UR
Manager of MSRA) to visit HKU in Feb, 2009.

- Invited to give a talk
in the MSRA/Beijing Research Seminar in Feb, 2009

- Invited to give a talk
in the MSRA Mobile Computing in Education (MCE) Theme Workshop in March,
2009.
