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Approximation of Pufferfish Privacy for Gaussian Priors
May 8, 2024, 4:11 a.m. | Ni Ding
cs.CR updates on arXiv.org arxiv.org
Abstract: This paper studies how to approximate pufferfish privacy when the adversary's prior belief of the published data is Gaussian distributed. Using Monge's optimal transport plan, we show that $(\epsilon, \delta)$-pufferfish privacy is attained if the additive Laplace noise is calibrated to the differences in mean and variance of the Gaussian distributions conditioned on every discriminative secret pair. A typical application is the private release of the summation (or average) query, for which sufficient conditions are …
adversary arxiv cs.cr cs.it data delta distributed epsilon math.it noise privacy studies transport
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