Jiajie Xu  许佳捷

Ph. D, Associate Professor

Room 303, Ligong Building, Soochow University

Email: xujj@suda.edu.cn



Dr. Jiajie Xu is an associate professor of Soochow University, and a member of the advanced data analytics (ADA) research center. He got his Ph.D. and Master degree from Swinburne University of Technology and University of Queensland in 2006 and 2011 respectively, and then worked in the Institute of Software, Chinese Academy of Sciences as assistant professor before joining Soochow University.


  • Spatio-temporal Database Systems
  • Big Data Analytics
  • Mobile Computing and Workflow Systems


  • Associate Professor (2013-Now)Computer Science, Soochow University
  • Assistant Professor (2011-2013)Institute of Software, Chinese Academy of Sciences
  • Ph.D. (2007-2011)Computer Science, Swinburne University of Technology


Journal Papers

  1. Jian Dai, Zhiming Ding, Jiajie Xu: Context-based Moving Object Trajectory Uncertainty Reduction and Ranking in Road Network. To appear in JCST.
  2. Jian Dai, Chengfei Liu, Jiajie Xu, Zhiming Ding: On Personalized and Sequenced Route Planning. To appear in World Wide Web Journal.
  3. Wei Chen, Lei Zhao, Jiajie Xu, Guanfeng Liu, Kai Zheng, Xiaofang Zhou: Trip Oriented Search on Activity Trajectory. In JCST, 30 (4), 745-761.
  4. Jiajie Xu, Yunjun Gao, Chengfei Liu, Lei Zhao, Zhiming Ding: Efficient route search on hierarchical dynamic road networks. In DPD 32(2): 227 – 252 (2015).
  5. Jianxin Li, Chengfei Liu, Jiajie Xu. XBridge-Mobile: Efficient XML Keyword Search on Mobile Web Data. In Computing Journal 96(7): 631 – 650 (2014).
  6. Jiajie Xu, Chengfei Liu, Xiaohui Zhao, Zhiming Ding: Incorporating Structural Improvement into Resource Allocation for Business Process Execution Planning. In CCPE. 25(3): 427-442 (2013). 
  7. Kuien Liu, Jiajie Xu, Longfei Zhang, Zhiming Ding, Mingshu Li: Discovering Hot Topics from GPS-tagged Video. In Journal of Neurocomputing 105: 90-99 (2013). 
  8. Zhiming Ding, Jiajie Xu, Qi Yang: A SeaCloud Framework for Sensor Data Management towards Internet of Things. In Journal of Supercomputing 66(3): 1260-1284 (2013).

Conference Papers

  1. Jiajie Xu, Guanfeng Liu, Kai Zheng, Chengfei Liu, Haoming Guo, Zhiming Ding: On Efficient Passenger Assignment for Group Transportation. In DASFAA 2015(1), pp. 226-243.
  2. Chenghao Zhu, Jiajie Xu, Chengfei Liu, Pengpeng Zhao, Zhixu Li, Lei Zhao: Efficient Trip Planning for Maximizing User Satisfaction. In DASFAA 2015(1), pp. 260-276.
  3. Pengpeng Zhao, Xiaopeng Kuang, Victor S. Sheng, Jiajie Xu, Jian Wu, Zhiming Cui: Scalable Top-k Spatial Image Search on Road Networks. In DASFAA 2015(2), pp. 379-396.
  4. Guanfeng Liu, Lei Zhao, Kai Zheng, An Liu, Jiajie Xu, Zhixu Li, Athman Bouguettaya: An Efficient Method to Find the Optimal Social Trust Path in Contextual Social Graphs. In DASFAA 2015(2), pp. 399-417.
  5. Kai Zheng, Han Su, Bolong Zheng, Shuo Shang, Jiajie Xu, Jiajun Liu, Xiaofang Zhou: Interactive Top-k Spatial Keyword Queries. In ICDE 2015, pp. 423-434.
  6. Xiaofang Zhou, Kai Zheng, Hoyoung Jeung, Jiajie Xu, Shazia Wasim Sadiq: Making Sense of Spatial Trajectories. In CIKM 2015, pp. 671-672.
  7. Haozhou Wang, Kai Zheng, Jiajie Xu, Bolong Zheng, Xiaofang Zhou, Shazia Wasim Sadiq. SharkDB: An In-Memory Column-Oriented Trajectory Storage. In CIKM 2014, pp.1409-1418.
  8. Yaguang Li, Chengfei Liu, Kuien Liu, Jiajie Xu, Fengcheng He, Zhiming Ding: On Efficient Map-Matching According to Intersections You Pass By. In DEXA 2013, pp. 42-56.
  9. Jiajie Xu, Limin Guo, Zhiming Ding, Xiling Sun and Chengfei Liu: Traffic Aware Route Planning in Dynamic Road Networks. In DASFAA 2012, pp. 576-591.
  10. Kuien Liu, Yaguang Li, Fengcheng He, Jiajie Xu, Zhiming Ding: Efficient Map-matching on the Most Simplified Road Networks, In ACM SIGSPATIAL GIS 2012.


User Intension Oriented Activity Trajectory Search and Recommendation System. NSFC Yong Scholar Project (No. 61402312, Chief Investigator)

Professional Service

  • CCF Big Data Technical Community, Corresponding Member 
  • Conference PC Member:MobiWis 2012; bigEM 2013; ICDM 2014, 2015 (demo); CBD 2014;CCF BigData 2015; CBPM 2015
  • Invited Reviewer: IEEE TKDE; IJGIS; WWWJ; JCST; KAIS; GeoInformatica; IEEE TITS