A Privacy-Preserving Architecture for the Semantic Web Based on Tag Suppression

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We propose an architecture that preserves user privacy in the semantic Web via tag suppression. In tag suppression, users may wish to tag some resources and refrain from tagging some others in order to hinder privacy attackers in their efforts to profile users’ interests. Following this strategy, our architecture helps users decide which tags should be suppressed. We describe the implementation details of the proposed architecture and provide further insight into the modeling of profiles. In addition, we present a mathematical formulation of the optimal trade-off between privacy and tag suppression rate.

This work was supported in part by the Spanish Government under Projects CONSOLIDER INGENIO 2010 CSD2007-00004 “ARES” and TSI2007-65393-C02-02 “ITACA”, and by the Catalan Government under Grant 2009 SGR 1362.