Zhengdao Xu received his B.S. degree in the Department of Computer Science from the Zhejiang University, China, and his M.S. degree in the School of Information Technology and Engineering (SITE) from the University of Ottawa. He is now a Ph.D student in the Department of Computer Science, University of Toronto. His current research interests include location constraint processing and pervasive computing.
Efficient Constraint Processing for Highly Personalized Location Based Services. Zhengdao Xu and Hans-Arno Jacobsen. In 30th International Conference on Very Large Databases (VLDB), pages 1285-1288, Toronto, Canada, August 2004.