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- 668 creator bhuvan-bamba.
- 668 creator ling-liu.
- 668 creator peter-pesti.
- 668 creator ting-wang.
- 668 type InProceedings.
- 668 label "Supporting Anonymous Location Queries in Mobile Environments with PrivacyGrid".
- 668 sameAs 668.
- 668 abstract "This paper presents PrivacyGrid − a framework for supporting anonymous location-based queries in mobile information delivery systems. The PrivacyGrid framework offers three unique capabilities. First, it provides a location privacy protection preference profile model, called location P3P, which allows mobile users to explicitly define their preferred location privacy requirements in terms of both location hiding measures(e.g., location k-anonymity and location l-diversity) and location service quality measures (e.g., maximum spatial resolution and maximum temporal resolution). Second, it provides fast and effective location cloaking algorithms for providing location k-anonymity and location l-diversity in a mobile environment. We develop dynamic bottom-up and top-down grid cloaking algorithms with the goal of achieving high anonymization success rate and efficiency in terms of both time complexity and maintenance costs. A hybrid approach that carefully combines the strength of both bottom-up and top-down cloaking approaches to further reduce the average anonymization time is also developed. Last but not the least, PrivacyGrid incorporates temporal cloaking into the location cloaking process to further increase the success rate of location anonymization. We also discuss PrivacyGrid mechanisms for anonymous support of location queries. Experimental evaluation shows that the PrivacyGrid approach can provide close to optimal location-k anonymity as defined by per user location P3P without introducing significant performance penalties.".
- 668 hasAuthorList authorList.
- 668 hasTopic World_Wide_Web.
- 668 isPartOf proceedings.
- 668 keyword "Anonymous location queries".
- 668 keyword "Dynamic spatio-temporal cloaking".
- 668 keyword "Evaluation metrics".
- 668 keyword "Location P3P".
- 668 keyword "Location privacy framework".
- 668 title "Supporting Anonymous Location Queries in Mobile Environments with PrivacyGrid".