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- W2112469755 abstract "Consider a mobile client who travels over roads and wishes to receive location-based services (LBS) from untrusted service providers. How might the user obtain such services without exposing her private position information? Meanwhile, how could the privacy protection mechanism incur no disincentive, e.g., excessive computation or communication cost, for any service provider or mobile user to participate in such a scheme? We detail this problem and present a general model for privacy-aware mobile services. A series of key features distinguish our solution from existing ones: a) it adopts the network-constrained mobility model (instead of the conventional random-waypoint model) to capture the privacy vulnerability of mobile users; b) it regards the attack resilience (for mobile users) and the query-processing cost (for service providers) as two critical measures for designing location privatization solutions, and provides corresponding analytical models; c) it proposes a robust and scalable location anonymization model, XStar, which best leverages the two measures; d) it introduces multi-folded optimizations in implementing XStar, which lead to further performance improvement. A comprehensive experimental evaluation is conducted to validate the analytical models and the efficacy of XStar." @default.
- W2112469755 created "2016-06-24" @default.
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- W2112469755 date "2009-08-01" @default.
- W2112469755 modified "2023-10-16" @default.
- W2112469755 title "Privacy-aware mobile services over road networks" @default.
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- W2112469755 doi "https://doi.org/10.14778/1687627.1687745" @default.
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