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Volume 27 Issue 2
March  2012
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Article Contents
Abstract
References
Wei-Wei Ni, Jin-Wang Zheng, Zhi-Hong Chong. HilAnchor: Location Privacy Protection in the Presence of Users' Preferences[J]. Journal of Computer Science and Technology, 2012, (2): 413-427. DOI: 10.1007/s11390-012-1231-2
Citation: Wei-Wei Ni, Jin-Wang Zheng, Zhi-Hong Chong. HilAnchor: Location Privacy Protection in the Presence of Users' Preferences[J]. Journal of Computer Science and Technology, 2012, (2): 413-427. DOI: 10.1007/s11390-012-1231-2
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HilAnchor: Location Privacy Protection in the Presence of Users' Preferences

  • School of Computer Science and Engineering, Southeast University, Nanjing 210096, China Key Laboratory of Computer Network and Information Integration in Southeast University, Ministry of Education Nanjing 210096, China

Funds: Supported by the National Natural Science Foundation of China under Grant Nos. 61003057 and 60973023.
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  • Received Date: June 28, 2011
  • Revised Date: January 15, 2012
  • Published Date: March 04, 2012
    Abstract
  • Location privacy receives considerable attentions in emerging location based services. Most current practices however either ignore users' preferences or incompletely fulfill privacy preferences. In this paper, we propose a privacy protection solution to allow users' preferences in the fundamental query of k nearest neighbors (kNN). Particularly, users are permitted to choose privacy preferences by specifying minimum inferred region. Via Hilbert curve based transformation, the additional workload from users' preferences is alleviated. Furthermore, this transformation reduces time-expensive region queries in 2-D space to range the ones in 1-D space. Therefore, the time efficiency, as well as communication efficiency, is greatly improved due to clustering properties of Hilbert curve. Further, details of choosing anchor points are theoretically elaborated. The empirical studies demonstrate that our implementation delivers both flexibility for users' preferences and scalability for time and communication costs.
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    • References (20)
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