Privacy-preserving social media data publishing for personalized ranking-based recommendation

Yang, Dingqi; Qu, Bingqing; Cudré-Mauroux, Philippe

doi:10.1109/TKDE.2018.2840974

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Journal article

Privacy-preserving social media data publishing for personalized ranking-based recommendation

Yang, Dingqi University of Fribourg, Switzerland
Qu, Bingqing University of Fribourg, Switzerland
Cudré-Mauroux, Philippe University of Fribourg, Switzerland

01.03.2019

Published in:

IEEE Transactions on Knowledge and Data Engineering. - 2019, vol. 31, no. 3, p. 507–520

English Personalized recommendation is crucial to help users find pertinent information. It often relies on a large collection of user data, in particular users' online activity (e.g., tagging/rating/checking-in) on social media, to mine user preference. However, releasing such user activity data makes users vulnerable to inference attacks, as private data (e.g., gender) can often be inferred from the users' activity data. In this paper, we proposed PrivRank, a customizable and continuous privacy-preserving social media data publishing framework protecting users against inference attacks while enabling personalized ranking-based recommendations. Its key idea is to continuously obfuscate user activity data such that the privacy leakage of user- specified private data is minimized under a given data distortion budget, which bounds the ranking loss incurred from the data obfuscation process in order to preserve the utility of the data for enabling recommendations. An empirical evaluation on both synthetic and real-world datasets shows that our framework can efficiently provide effective and continuous protection of user-specified private data, while still preserving the utility of the obfuscated data for personalized ranking-based recommendation. Compared to state-of-the-art approaches, PrivRank achieves both a better privacy protection and a higher utility in all the ranking-based recommendation use cases we tested.

Faculty

Faculté des sciences et de médecine

Department

Département d'Informatique

Language