(Bobby)

Assistant Professor
Deputy Director of CAIS

Office: N4-2c-80
Division of Information Systems
Computer Engineering School
Nanyang Technological University
Singapore  639798

Email: jzhang@ntu.edu.sg
Tel.: (65) 6790-6265
Fax: (65) 6792-6559

Information

I obtained my Bachelor's degree from the Department of Computer Science and Engineering, South China University of Technology (SCUT) in July, 2000 and my Ph.D. from the Computer Science Department, Hong Kong University of Science and Technology (HKUST) in January, 2004. I am currently an assistant professor in the Division of Information Systems, Computer Engineering School, Nanyang Technological University, Singapore.

My original research area is databases. I am now interested in anything related to computer science that may create an industry impact.

Publications

Journals

Zhu, M., Papadias, D., Zhang, J., Lee, D. Top-k Spatial Joins. To appear in IEEE Transactions on Knowledge and Data Engineering (TKDE).

Tao, Y., Zhang, J., Papadias, D., Mamoulis, N. An Efficient Cost Model for Optimization of Nearest Neighbor Search in Low and Medium Dimensional Spaces. To appear in IEEE Transactions on Knowledge and Data Engineering (TKDE).

Tao, Y., Papadias, D., Zhang, J. Cost Models for Overlapping and Multi-Version Structures. ACM Transactions on Database Systems (TODS), 27(3): 299-342, 2002.

Papadias, D., Tao, Y., Zhang, J., Mamoulis, N., Shen, Q., Sun J. Indexing and Retrieval of Historical Aggregate Information about Moving Objects. (Invited paper) IEEE Data Engineering Bulletin 25(2) pp.10-17, 2002.

Conferences

Zhang, J., Mamoulis, N., Papadias, D., Tao, Y. All-Nearest-Neighbors Queries in Spatial Databases. IEEE Conference on Scientific and Statistical Database Management (SSDBM), 2004. [presentation]

Zhang, J., Papadias, D., Mouratidis, K., Zhu, M. Spatial Queries in the Presence of Obstacles. International Conference on Extending Database Technology (EDBT), 2004. [presentation]

Papadias, D., Zhang, J., Mamoulis, N., Tao, Y. Query Processing in Spatial Network Databases. Very Large Data Bases Conference (VLDB), 2003. [presentation]

Zhang, J., Zhu, M., Papadias, D., Tao, Y., Lee, D. Location-Based Spatial Queries. ACM Conference on Management of Data (SIGMOD), 2003. [presentation]

Tao, Y.,  Papadias,  D., Zhang, J. Aggregate Processing of Planar Points. International Conference on Extending Database Technology (EDBT), 2002. [presentation]

Tao, Y.,  Papadias,  D., Zhang, J. Cost Models for Overlapping and Multi-Version Structures. IEEE International Conference on Data Engineering (ICDE), 2002. [presentation]

Papadias,  D., Tao, Y., Kalnis, P., Zhang, J. Indexing Spatio-Temporal Data Warehouses. IEEE International Conference on Data Engineering (ICDE), 2002. [presentation]

Papadias, D., Kalnis, P., Zhang, J., Tao, Y. Efficient OLAP Operations in Spatial Data Warehouses. International Symposium on Spatial and Temporal Databases (SSTD), 2001.

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