DB Group


Jianliang Xu
Professor and Associate Head
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

Prof. 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. Prof. 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 serving as a director of the Blockchain and FinTech Lab and leads the Database Research Group at Hong Kong Baptist University.

Prof. Xu has more than 200 publications as edited books and proceedings, invited book chapters, and technical papers in refereed journals and conferences including SIGMOD, VLDB, KDD, MobiSys, ICDE, TODS, TKDE, and VLDBJ. He has been invited to serve on organizing and program committees for dozens of international conferences including SIGMOD, VLDB, ICDE, and WWW. Prof. Xu was a recipient of IEEE ICDE Outstanding Reviewer Award (2010), HKBU President's Award for Outstanding Performance in Scholarly Work (2017) and HKBU President's Award for Outstanding Performance in Teaching (2018). He is a senior member of IEEE and CCF, and a member of IEEE Technical Committee on Data Engineering and CCF Technical Committee on Databases. He has served as an executive committee member and vice chairman of ACM Hong Kong Chapter. He has been an Associate Editor of IEEE Transactions on Knowledge and Data Engineering (TKDE) and Proceedings of VLDB Endowment (PVLDB). He is a member of the Engineering Panel of the Hong Kong Research Grants Council (2016-).

Looking for PhD students and Postdoc/senior researchers; please email me your CV and supporting documents
Current Research Interests:
      Big Data Management, Blockchain, Mobile Computing, Data Security and Privacy
Recent Activities:
Student Achievements:
Research Grants:
  • vPubSub: Verifiable Publish/Subscribe Queries over Outsourced Data Streams (PI, RGC/GRF, HKBU12201018, 2019-2021)
  • KAIS: Keyword-based Spatial Influence Queries (PI, RGC/GRF, HKBU12200817, 2018-2020)
  • SECURED: Security and Privacy-enhancing Technologies for Cloud Storage of Big Data (Co-PI, RGC/CRF C1008-16G, 2017-2020)
  • AUQS: Authenticated Analytical Query Services on Set-Valued Data (PI, RGC/GRF, HKBU12244916, 2017-2019)
  • EyeBB+: Privacy-Preserving Large-Scale Indoor Location Tracking using Wearable Devices (PI, ITS/288/15FX, 2016-2018)
  • SORS: Social-Aware Ridesharing in Location-Based Services (PI, RGC/GRF, HKBU12201615, 2016-2018)
  • 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)
  • 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):
  • C. Xu, C. Zhang, and J. Xu. "vChain: Enabling Verifiable Boolean Range Queries over Blockchain Databases." Proc. the ACM SIGMOD International Conference on Management of Data (SIGMOD '19), Amsterdam, Netherlands, 2019. (eprint, news)
  • C. Zhang, C. Xu, J. Xu, Y. Tang, and B. Choi. "GEM^2-Tree: A Gas-Efficient Structure for Authenticated Range Queries in Blockchain." Proc. the 35th IEEE International Conference on Data Engineering (ICDE '19), Macau SAR, China, 2019.
  • Z. Zhang, X. Huang, J. Xu, B. Choi, and Z. Shang. "Keyword-Centric Community Search." Proc. the 35th IEEE International Conference on Data Engineering (ICDE '19), Macau SAR, China, 2019.
  • S. Guo, J. Xu, C. Zhang, C. Xu, and T. Xiang. "ImageProof: Enabling Authentication for Large-Scale Image Retrieval." Proc. the 35th IEEE International Conference on Data Engineering (ICDE '19), Macau SAR, China, 2019.
  • C. Xu, J. Xu, H. Hu, and M. H. Au. "When Query Authentication Meets Fine-Grained Access Control: A Zero-Knowledge Approach." Proc. of the ACM SIGMOD International Conference on Management of Data (SIGMOD '18), Houston, TX, June 2018.
  • Q. Zhu, H. Hu, C. Xu, J. Xu, and W.-C. Lee. "Geo-Social Group Queries with Minimum Acquaintance Constraints." Very Large Data Bases Journal (VLDBJ), 26(5): 709-727, October 2017.
  • L. Chen, J. Xu, X. Lin, C. S. Jensen, and H. Hu. "Answering Why-Not Spatial Keyword Top-k Queries via Keyword Adaption." Proc. the 32nd IEEE International Conference on Data Engineering (ICDE '16), Helsinki, Finland, May 2016.
  • R. Chen, Q. Xiao, Y. Zhang, and J. Xu. "Differentially Private High-Dimensional Data Publication via Sampling-based Inference." Proc. of the ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD '15), Sydney, Australia, August 2015.
  • Q. Chen, H. Hu, and J. Xu. "Authenticated Online Data Integration Services." Proc. of the ACM SIGMOD International Conference on Management of Data (SIGMOD '15), Melbourne, Australia, May/June 2015.
  • L. Chen, X. Lin, H. Hu, C. S. Jensen, and J. Xu. "Answering Why-not Questions on Spatial Keyword Top-k Queries." Proc. the 31st IEEE International Conference on Data Engineering (ICDE '15), Seoul, Korea, April 2015.
  • 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.