Ken C. K. Lee, Ph.D.
Fall 2011 Office Hours: 10am-12pm MW, 11am-12pm R

About Me

Dr. Ken C. K. Lee (Chi Keung Lee) obtained his Ph.D. degree in Computer Science and Engineering from the Pennsylvania State University, University Park in 2009. Prior to starting his PhD study in 2004, Dr. Lee earned his bachelor and master degrees both in Computing, in the Hong Kong Polytechnic University, Hong Kong. Currently, Dr. Lee is a member of ACM and a member of IEEE.

News:

2011/2/23 Invited talk on "Location-Based Services on Geo-Tagged Information" in CS of UMass Boston.
2010/12/3 Invited talk on "Location-Based Services: Opportunities, Challenges and Solutions" in CIS of UMass Dartmouth.
2010/10/14 Invited colloquium talk on "Location-Based Services in Road Networks" in CS of UMass Lowell.
2010/9/12-16 Attending ICPP 2010 in San Diego, CA.

Teaching

Course students can download course materials in
UMassOnline (as known as MyCourses) .
Fa'11 CIS452: Database Systems CIS570: Computer Architecture CIS599: Graduate Seminars
Sp'11 CIS264: SW Quality Assurance and Testing CIS481: Parallel and Distributed Computing CIS599: Graduate Seminars
Fa'10 CIS272: Introduction to Computer Systems CIS452: Database Systems
Sp'10 CIS264: SW Quality Assurance and Testing
Fa'09 CIS272: Introduction to Computer Systems

Research:

Research interest: database, data mining, information retrieval, mobile and pervasive computing, cloud computing etc.

Selected Publications (a more complete list can be found at
DBLP, thanks to Michael Ley for DBLP)

Journals
  1. Querying Uncertain Minimum in Wireless Sensor Networks ,
    Mao Ye, Ken C. K. Lee, Xingjie Liu, Wang-Chien Lee and Meng-Chang Chen
    IEEE Transactions on Knowledge and Data Engineering (TKDE), accepted in June 2011 and to appear.
  2. Location-Dependent Spatial Query Containment,
    Ken C. K. Lee, Brandon Unger, Baihua Zheng and Wang-Chien Lee,
    Data and Knowledge Engineering (DKE) Journal, accepted in May 2011 and to appear.
  3. ROAD: A New Spatial Object Search Framework for Road Networks,
    Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng and Yuan Tian,
    IEEE Transactions on Knowledge and Data Engineering (TKDE), accepted in August 2010 and to appear.
  4. IR-tree: An Efficient Index for Geographic Document Search,
    Zhisheng Li, Ken C. K. Lee, Baihua Zheng, Wang-Chien Lee, Dik Lun Lee and Xufa Wang,
    IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol 23, No. 4, pages 585-599, 2011
  5. Nearest Surrounder Queries,
    Ken C. K. Lee, Wang-Chien Lee and Hong Va Leong,
    IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol 22, No. 10, pages 1444-1458, 2010
  6. Z-SKY: An Efficient Skyline Query Processing Framework based on Z-Order,
    Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng, Huajing Li and Yuan Tian,
    Very Large Data Base Journal (VLDBJ), Vol 19, No. 3, pages 333-362, 2010
  7. Visible Reverse k-Nearest Neighbor Query Processing in Spatial Databases,
    Yunjun Gao, Baihua Zheng, Gencai Chen, Wang-Chien Lee, Ken C. K. Lee , Qing Li,
    IEEE Transactions on Knowledge and Data Engineering (TKDE). Vol 21, No. 9, page 1314-1327, 2009
  8. A Distributed Spatial Index for Error-Prone Wireless Data Broadcast,
    Baihua Zheng, Wang-Chien Lee, Ken C. K. Lee, Dik Lun Lee, Min Shao,
    Very Large Data Base Journal (VLDBJ), Vol. 18, No. 4, pages 959-986, 2009
  9. Ranked Reverse Nearest Neighbor Search,
    Ken C. K. Lee, Baihua Zheng, Wang-Chien Lee,
    IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 20, No. 7, pages 894-910, 2008
  10. Semantic Data Broadcast for a Mobile Environment Based on Dynamic and Adaptive Chunking,
    Ken C. K. Lee, Hong Va Leong, Antonio Si,
    IEEE Transactions on Computers (TOC), Vol. 51, No. 10, pages 1253-1268, 2002
Conference Proceedings
  1. On Top-k Social Web Search,
    Peifeng Yin, Wang-Chien Lee, Ken C. K. Lee
    ACM Conference on Information and Knowledge Management (ACM CIKM), Toronto, Canada, Accepted, Oct 2010
  2. DISQO: A DIStributed Framework for Spatial Queries over Moving Objects,
    Baihua Zheng, Wang-chien Lee, Ken C. K. Lee, Julian Winter and Meng-Chang Chen
    International Conference on Parallel Processing (ICPP), San Deigo, CA, USA, Accepted, Sep 2010
  3. Navigational Path Privacy Protection,
    Ken C. K. Lee, Wang-Chien Lee, Hong Va Leong, Baihua Zheng,
    ACM Conference on Information and Knowledge Management (ACM CIKM), Hong Kong, China, pages 691-700, Nov 2009
  4. Fast Object Search on Road Networks,
    Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng,
    The 12th International Conference on Extending Database Technology (EDBT), St. Petersburg, Russia, pages 1018-1029, Mar 2009
  5. Monitoring Minimum Cost Paths on Road Networks,
    Yuan Tian, Ken C. K. Lee and Wang-Chien Lee,
    ACM International Conference on Geographic Information Systems (ACM GIS), Seatle, WA, USA, pages 217-226, Nov 2009.
  6. Finding Skyline Paths in Road Networks,
    Yuan Tian, Ken C. K. Lee and Wang-Chien Lee,
    ACM International Conference on Geographic Information Systems (ACM GIS), Seatle, WA, USA, pages 444-447, Nov 2009
  7. OPAQUE: Protecting Path Privacy in Directions Search,
    Ken C. K. Lee, Wang-Chien Lee, Hong Va Leong and Baihua Zheng,
    IEEE International Conference on Data Engineering (IEEE ICDE), Shanghei, China, page 1271-1274, Apr 2009
  8. Valid Scope Computation for Location-Dependent Spatial Query in Mobile Broadcast Environments,
    Ken C. K. Lee, Josh Schiffman, Baihua Zheng and Wang-Chien Lee,
    ACM Conference on Information and Knowledge Management (ACM CIKM), Napa Valley, CA, USA, pages 1231-1240, Oct 2008.
  9. Location-Dependent Skyline Query,
    Baihua Zheng, Ken C. K. Lee and Wang-Chien Lee,
    International Conference on Mobile Data Management (MDM), Beijing, China, pages 148-155, May 2008
  10. Searching Correlated Objects in a Long Sequence,
    Ken C. K. Lee, Wang-Chien Lee, Donna Peuquet and Baihua Zheng,
    20th International Conference on Scientific and Statistical Database Management (SSDBM), Hong Kong, China, pages 436-454
  11. Approaching the Skyline in Z Order,
    Ken C. K. Lee, Baihua Zheng, Huajing Li and Wang-Chien Lee,
    International Conference on Very Large Data Base (VLDB), Vienna, Austria, page 279-290, Sep 2007
  12. Processing Multiple Aggregation Queries in Geo-Sensor Networks,
    Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng and Julian Winter,
    International Conference on Database Systems for Advanced Applications (DASFAA), Singapore, pages 20-34, Apr 2006
  13. Caching Complementary Space for Location-Based Services,
    Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng and Jianliang Xu,
    International Conference on Extending DataBase Technology (EDBT), Munich, Germany, pages 1020-1038, Mar 2006
  14. Nearest Surrounder Queries,
    Ken C. K. Lee, Wang-Chien Lee and Hong Va Leong
    IEEE International Conference on Data Engineering (IEEE ICDE), Atlanta, GA, USA, page 85, Apr 2006
  15. Aqua: An Adaptive QUery-Aware Location Updating Scheme for Mobile Objects,
    Jing Zhou, Hong Va Leong, Qin Lu and Ken C. K. Lee,
    International Conference on Database Systems for Advanced Applications (DASFAA), Beijing, China, pages 612-624, Apr 2005
  16. A Semantic Broadcast Scheme for a Mobile Environment based on Dynamic Chunking,
    Ken C. K. Lee, Hong Va Leong and Antonio Si,
    IEEE International Conference on Distributed Computing Systems (IEEE ICDCS), Taipei, Taiwan, pages 522-529, May 2000
  17. Incremental Maintenance for Dynamic Database-Derived HTML Pages in Digital Libraries,
    Ken C. K. Lee, Hong Va Leong and Antonio Si,
    ACM Conference on Information and Knowledge Management (ACM CIKM), Bethesda, Maryland, pages 20-29, Nov 1998
Demonstration:
  1. CS Cache Engine: Data Access Accelerator for Location-Based Service in Mobile Environments,
    Ken C. K. Lee, Wang-Chien Lee, Julian Winter, Baihua Zheng and Jianliang Xu,
    ACM International Conference on Management of Data (ACM SIGMOD), Chicago, IL, USA, pages 787-789, Jun 2006

My Students

  • Kanchan M. Bankar, Master thesis topic: Text search in relational databases (Spring 10-Spring 11)
  • Sarfaraz H Unawalla, Master project topic: New approaches for path privacy protection (completed in Fall 10)

Services

2011 Co-chair of DASFAA 2011 Tutorial, Hong Kong
PC Member of ACM SAC (Mobile Computing and Application Track), TaiChung, Taiwan, 2011
2010 Co-chair of DIAMOND Workshop in conjunction with ICPP 2010, San Diego, CA
PC Member of ACM SAC (Mobile Computing and Application Track), Sierre, Switzerland, 2010
PC Member of Mobile Data Management, Kansas City, MO 2010

latest update on Nov 30, 2010