DB Group


Jianliang Xu
Department of Computer Science (Map)
Hong Kong Baptist University
Kowloon Tong, Hong Kong
Tel: +852 3411 5808     Fax: +852 3411 7892
Email: xujlcomp.hkbu.edu.hk

Dr. Xu joined the Computer Science Department of Hong Kong Baptist University (HKBU) after he received his PhD degree in Computer Science from Hong Kong University of Science and Technology in 2002. He obtained his BEng degree in Computer Science and Engineering from Zhejiang University, Hangzhou, China in 1998. Prior to that, he received his secondary education from Suzhou High School from 1991 to 1994. Dr. Xu has been a visiting scholar at Pennsylvania State University, University Park (in Summer 2005) and a senior visiting fellow at Fudan University (in Winter 2009). He is a fellow of HKBU-UIC Joint Institute of Research Studies and a member of Database Research Group at Hong Kong Baptist University.

Dr. Xu has more than 120 publications as edited books and proceedings, invited book chapters, and technical papers in refereed journals and conferences including SIGMOD, VLDB, MobiSys, ICDE, INFOCOM, ICDCS, TODS, ToN, TKDE, TPDS, and VLDBJ. He has been invited to serve on organizing and program committees for dozens of international conferences including SIGMOD, VLDB, ICDE, INFOCOM, and WWW. Dr. Xu was a recipient of IEEE ICDE Outstanding Reviewer Award (2010) and HKBU Faculty Performance Award for Outstanding Young Researcher (2012). He is the vice chairman of ACM SIGMOD Hong Kong/China Chapter, a senior member of IEEE and CCF, and a member of IEEE Technical Committee on Data Engineering and CCF Technical Committee on Databases. He is currently serving on the editorial boards of IEEE Transactions on Knowledge and Data Engineering (TKDE) and International Journal of Distributed Sensor Networks (IJDSN). He has served as an executive committee member and vice chairman of ACM Hong Kong Chapter.

Looking for PhD students and Postdoc/senior researchers; please email me your CV if interested.
Current Research Interests:
      Data Management, Mobile/Pervasive Computing, Distributed and Networked Systems.
Professional Services and News:
Student Achievements:
General Research Fund (formerly CERG):
  • AQUC: Authenticated Queries for Cloud-Assisted Multi-Source Data Collection (PI, RGC/GRF, HKBU12202414, 2014-2017)
  • iGPS: Privacy-Preserving Geo-Proximity Services in Location-based Social Networks (PI, RGC/GRF, HKBU211512, 2012-2015)
  • iQAO: Privacy-Conscious Query Authentication for Outsourced and Cloud Databases (Co-I, PI: Haibo Hu, RGC/GRF, HKBU210811, 2011-2014)
  • FlashTX: Transaction Management for Flash-based Database Systems: Protocols, Implementations and Optimizations (PI, RGC/GRF, HKBU211510, 2010-2013)
  • QUPOS: Query Processing in Flash-Based Storage-Centric Sensor Networks (PI, RGC/GRF, HKBU210808, 2009-2011)
  • DEFACTO: Data-Centric Filter Management and Routing Optimization for Distributed Monitoring Systems (PI, RGC/GRF, HKBU211307, 2008-2010)
  • iPDA: Privacy-Preserving Location-based Data Access in Mobile Environments (PI, RGC/GRF, HKBU211206, 2006-2009)
  • ECOQUAD: Energy-Conserving Quality-Aware Data Collection in Wireless Sensor Networks (PI, RGC/GRF, HKBU211505, 2005-2008)
Selected Recent Publications (Complete List, DBLP, Google Scholar):
  • Q. Chen, H. Hu, and J. Xu. "Authenticating Top-k Queries in Location-based Services with Confidentiality." Proceedings of the VLDB Endowment (PVLDB '14), Hangzhou, China, September 2014.
  • H. Hu, J. Xu, X. Xu, K. Pei, B. Choi, and S. Zhou. "Private Search on Key-Value Stores with Hierarchical Indexes." Proc. the 30th IEEE International Conference on Data Engineering (ICDE '14), Chicago, IL, USA, April 2014.
  • H. P. Li, H. Hu, and J. Xu. "Nearby Friend Alert: Location Anonymity in Mobile Geosocial Networks." IEEE Pervasive Computing (PC), 12(4):62-70, Oct.-Dec. 2013. (press coverage)
  • X. Lin, J. Xu, H. Hu, and W.-C. Lee. "Authenticating Location-Based Skyline Queries in Arbitrary Subspaces." IEEE Transactions on Knowledge and Data Engineering (TKDE), accepted to appear.
  • J. Deng, B. Choi, J. Xu, H. Hu, and S. S. Bhowmick. "Incremental Maintenance of the Minimum Bisimulation of Cyclic Graphs." IEEE Transactions on Knowledge and Data Engineering (TKDE), 25(11): 2536-2550, Nov. 2013.
  • X. Lin, J. Xu, and H. Hu. "Range-based Skyline Queries in Mobile Environments." IEEE Transactions on Knowledge and Data Engineering (TKDE), 25(4): 835-849, April 2013.
  • H. Hu, J. Xu, Q. Chen, and Z. Yang. "Authenticating Location-based Services without Compromising Location Privacy." Proc. of the ACM SIGMOD International Conference on Management of Data (SIGMOD '12), Scottsdale, Arizona, USA, 2012.
  • X. Pan, J. Xu, and X. Meng. "Protecting Location Privacy against Location-Dependent Attacks in Mobile Services." IEEE Transactions on Knowledge and Data Engineering (TKDE), 24(9): 1624-1639, 2012.
  • S. T. On, J. Xu, B. Choi, H. Hu, and B. He. "Flag Commit: Supporting Efficient Transaction Recovery in Flash-based DBMSs." IEEE Transactions on Knowledge and Data Engineering (TKDE), 24(8): 1506-1519, 2012.
  • H. Hu, J. Xu, C. Ren and B. Choi. "Processing Private Queries over Untrusted Data Cloud through Privacy Homomorphism." Proc. the 27th IEEE International Conference on Data Engineering (ICDE '11), Hannover, Germany, April 2011.
  • Y. Peng, B. Choi and J. Xu. "Selectivity Estimation of Twig Queries on Cyclic Graphs." Proc. the 27th IEEE International Conference on Data Engineering (ICDE '11), Hannover, Germany, April 2011.
  • H. Hu, J. Xu, S. T. On, J. Du, and J. K. Ng. "Privacy-Aware Location Data Publishing." ACM Transactions on Database Systems (TODS), 35(3), 2010.