(Mobile Computing, Internet Computing, Distributed Systems, Parallel Computing, Distributed Databases, Digital Libraries, Applications on Internet, E-commerce, M-commerce and Geographical Information Systems)

Dr Leong graduated from the University of California at Santa Barbara in 1994 and joined the Hong Kong Polytechnic University. He received his undergraduate and first graduate degree from the Chinese University of Hong Kong. Since then, he had been working as teaching and research assistants throughout his graduate career and held several scholarships and fellowships. He is active in research and has published over 100 refereed research papers. His research interests lie in distributed systems, distributed databases, and mobile computing. He is also interested in applications originating from the domains of parallel programming, internet, and geographical information systems. He has served on the program committee and organizing committee of numerous international conferences as well as chairing some of them. He is a member of the ACM, IEEE Computer Society and IEEE Communications Society.

Selected publications:

Publication Listed at Computer Science Bibliography Server

• Chow, C.Y., Leong, H.V. and Chan, A. Utilizing the cache space of low-acticity clients in a mobile environment. To appear in International Journal of Wireless and Mobile Computing.
• Lee, K.C.K.,Schiffman J., Zheng, B., Lee, W.C., Leong, H.V. Round-Eye: A system for tracking nearest surrounders in moving object environments. The Journal of Systems and Software, 80:2063-2076, 2007.
• Chow, C.Y., Leong, H.V. and Chan, A. GroCoca: Group-based peer-to-peer cooperative caching in mobile environment. IEEE Journal on Selected Areas in Communications, 25(1):179-191, January 2007.
• Ho, K.S., Leong, H.V., Lam, W. and Luk, R.W.P. Integrating XML and CORBA to support collaborative writing using off-the-shelf editing software. Information Systems: An International Journal, 31(6):465-488, September 2006.
• Zhou, J., Leong, H.V., Lu, Q. and Lee, K.C.K. Generic adaptive moving object tracking algorithms. In Proceedings of International Conference on Parallel Processing, pages 93-100, August 2006.
• Lee, K.C.K., Lee, W.C. and Leong, H.V. Nearest surrounder queries. In Proceedings of International Conference on Data Engineering, pages 85-94, April 2006.
• Chow, C.Y., Leong, H.V. and Chan, A. Distributed group-based cooperative caching in a mobile broadcast environment. In Proceedings of International Conference on Mobile Data Management, pages 97-106, May 2005.
• Zhou, J., Leong, H.V., Lu, Q. and Lee, K.C.K. Aqua: an adaptive query-aware location updating scheme for mobile objects. In Proceedings of International Conference on Database Systems for Advanced Applications, pages 612-624, March 2005.
• Leong, H.V. and Si, A. Multi-resolution information transmission in mobile environments. In Mobile Information Systems Journal, volume 1, number 1, pages 25-40, January 2005.
• Chan, A.T.S., Wong, E.Y.C. and Leong, H.V. Xstream: a middleware for streaming XML contents over wireless environment. In IEEE Transactions on Software Engineering, volume 30, number 12, pages 918-935, December 2004.
• Lam, G.H.K., Leong, H.V. and Chan, S. Leadership maintenance in group-based location management scheme. In Proceedings of International Conference on Cooperative Information Systems, pages 544-562, October 2004.
• Chow, C.Y., Leong, H.V. and Chan, A. Group-based cooperative cache management for mobile clients in a mobile environment. In Proceedings of International Conference on Parallel Processing, pages 83-90, August 2004.
• Chan, A.T.S., Chuang, S.N., Cao, J. and Leong, H.V. An event-driven middleware for mobile context awareness. In The Computer Journal, volume 47, number 3, pages 278-288, 2004.
• Chim, J.H.P., Lau, R.W.H., Leong, H.V. and Si, A. CyberWalk: a web-based distributed virtual walkthrough environment. In IEEE Transactions on Multimedia, volume 5, number 4, pages 503-515, December 2003.
• Leong, H.V. Transactional database accesses for M-commerce clients. In Advances in Mobile Commerce Technologies, Chapter 3, pages 44-73, 2003.
• Yau, S.M.T., Leong, H.V. and Si, A. Distributed agent environment: application and performance. In Information Sciences Journal, volume 154, number 1-2, pages 5-21. August 2003.
• Lee, K.C.K., Leong, H.V. and Si, A. Semantic data broadcast for a mobile environment based on dynamic and adaptive chunking. In IEEE Transactions on Computers, Volume 51, number 10, pages 1253-1268, October 2002.
• Chan, A.T.S., Tse, F., Cao, J. and Leong, H.V. ORBCard: a CORBA-based distributed object programming environment for smart card application development. In IEEE Internet Computing, pages 27-36, Volume 6, number 3, 2002.
• Ho, K.S. and Leong, H.V. Improving the scalability of the CORBA Event Service with a multi-agent load balancing algorithm. In Software-Practice and Experience, Volume 32, number 5, pages 417-441. John Wiley and Sons, April 2002.
• Chan, B.Y.L., Si, A. and Leong, H.V. A framework for cache management for mobile databases: design and evaluation. In Journal of Distributed and Parallel Databases, Volume 10, number 1, pages 23-57, July 2001.
• Chim, J.H.P., Green, M., Lau, R., Leong, H.V. and Si, A. Object caching and prefetching in distributed virtual walkthrough. In Real-Time Systems, Volume 21, number 1-2, pages 143-164, July 2001.
• Leong, H.V., Ho, K.S. and Lam, W. Web-based workflow framework with CORBA. In Concurrent Engineering: Research and Applications, Volume 9, number 2, pages 120-130. Technomic Publishing Company, June 2001.
• Choy, M., Leong, H.V. and Wong, M.H. Disaster recovery techniques for database systems. In Communications of the ACM, Volume 43, number 11, pages 272-280. ACM, November 2000.
• Lee, K.C.K., Leong, H.V. and Si, A. Incremental view maintenance for mobile databases. In Knowledge and Information Systems, Volume 2, number 4, pages 413-437. Springer-Verlag, November 2000.
• Leong, H.V., McLeod, D., Si, A. and Yau, S.M.T. On supporting weakly-connected browsing in a mobile web environment. In Proceedings of the International Conference on Distributed Computing Systems, pages 538-546. IEEE, April 2000.
• Chan, B.Y.L., Leong, H.V., Si, A. and Wong, K.F. MODEC: a multi-granularity mobile object-oriented database caching mechanism, prototype and performance. In Journal of Distributed and Parallel Databases, Volume 7, number 3, pages 343-372, July 1999.
• Lee, K.C.K., Leong, H.V. and Si, A. Semantic query caching in a mobile environment. In ACM Mobile Computing and Communications Review, Volume 3, number 2, pages 28-36, April 1999.
• Si, A. and Leong, H.V. Query optimization for broadcast database. In Data and Knowledge Engineering Journal, Volume 29, number 3, pages 351-380, March 1999.
• Chim, J.H.P., Green, M., Lau, R., Leong, H.V. and Si, A. On caching and prefetching of virtual objects in distributed virtual environments. In Proceedings of the ACM International Multimedia Conference, pages 171-180. ACM, September 1998.
• Chan, B.Y.L., Si, A. and Leong, H.V. Cache management for mobile databases: design and evaluation. In Proceedings of the 14th International Conference on Data Engineering, pages 54-63. IEEE, February 1998.
• Leong, H.V. and Si, A. Database caching over the air-storage. In The Computer Journal. Volume 40, number 7, pages 401-415. Oxford University Press, 1997.
• Si, A. and Leong, H.V. Adaptive caching and refreshing in mobile databases. In Personal and Ubiquitous Computing. Volume 1, number 3, pages 156-170. Springer-Verlag, September 1997.
• Si, A. and Leong, H.V. Query processing and optimization for broadcast database. In Proceedings of the 7th International Conference on Database and Expert Systems Applications, pages 899-914. LNCS, September 1996.
• Leong, H.V., Si, A. and Chan, B.Y.L. Caching data over a broadcast channel. In J.L. Encarnacao and J.M. Rabaey, ed., Mobile Communications: Technology, Tools, Applications, Authentication and Security, Chapman & Hall, pages 31-38. September 1996.
• Leong, H.V. and Si, A. Data broadcasting strategies over multiple unreliable wireless channels. In Proceedings of the 4th International Conference on Information and Knowledge Management, pages 96-104. ACM, November 1995. Postscript version.
• Choy, M., Leong, H.V. and Wong, M.H. On distributed object checkpointing and recovery. In Proceedings of the 14th ACM Annual Symposium on Principles of Distributed Computing, pages 64-73. ACM, August 1995. Postscript version.
• Agrawal, D., Choy, M., Leong, H.V. and Singh, A.K. Mixed consistency: A model for parallel programming. In Proceedings of the 13th ACM Annual Symposium on Principles of Distributed Computing, pages 101-110. ACM, August 1994. Postscript version.
• Leong, H.V. and Agrawal, D. Using message semantics to reduce rollback in optimistic message logging recovery schemes. In Proceedings of the 14th International Conference on Distributed Computing Systems, pages 227-234. IEEE, June 1994. Postscript version.

Course material

• COMP 304: Operating Systems

Conference

• SAC 2012