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• W2573983252 abstract "Rich contexts enable the provision of context-aware services on mobile smart phones, but they also introduce threats of privacy leakages. It is widely held that the key to privacy preservation is to achieve efficient tradeoffs between the utilization of contexts, the preservation of privacy. Gotz et al. present δ privacy that exploits temporal relation to decide the release/suppression, this technique achieves a good tradeoff. However, δ privacy does not consider the hierarchy of different layers of contexts. In this paper, we propose FDH which provides fine-grained suppression over the context hierarchy, integrates δ privacy. Our experiments on real smart phone context traces show that FDH can release a few suppression contexts in δ privacy with limited cost, obtain relatively high utility while preserving strong privacy." @default.
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• W2573983252 date "2016-07-01" @default.
• W2573983252 modified "2023-09-27" @default.
• W2573983252 title "Fine-Grained Delta Privacy Preservation for Hierarchical Contexts" @default.
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• W2573983252 doi "https://doi.org/10.1109/uic-atc-scalcom-cbdcom-iop-smartworld.2016.0057" @default.
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