Department of Computer Science
Distortion-based anonymity for continuous queries in location-based mobile services
Privacy preservation has recently received considerable attention for location-based mobile services. Various location cloaking approaches have been proposed to protect the location privacy of mobile users. However, existing cloaking approaches are ill-suited for continuous queries. In view of the privacy disclosure and poor QoS (Quality of Service) under continuous query anonymization, in this paper, we propose a Δ p-privacy model and a Δ q-distortion model to balance the tradeoff between user privacy and QoS. Furthermore, two incremental utility-based cloaking algorithms - - bottom-up cloaking and hybrid cloaking, are proposed to anonymize continuous queries. Experimental results validate the efficiency and effectiveness of the proposed algorithms. © 2009 ACM.
Continuous queries, Information privacy, Location-based services, Privacy protection
Source Publication Title
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Seattle, United States
Link to Publisher's Edition
Pan, Xiao, Xiaofeng Meng, and Jianliang Xu. "Distortion-based anonymity for continuous queries in location-based mobile services." Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (2009): 256-265.