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20112026
most citedOptimal Forgery and Suppression of Ratings for Privacy Enhancement in Recommendation Systems

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The Adverse Effects of Omitting Records in Differential Privacy: How Sampling and Suppression Degrade the Privacy--Utility Tradeoff (Long Version)

Àlex Miranda-Pascual, Javier Parra-Arnau, Thorsten Strufe

Sampling is renowned for its privacy amplification in differential privacy (DP), and is often assumed to improve the utility of a DP mechanism by allowing a noise reduction. In thi…