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Contributed talk
in
Workshop: Privacy in Machine Learning (PriML) 2021

Canonical Noise Distributions and Private Hypothesis Tests

Jordan Awan · Salil Vadhan


Abstract: In the setting of $f$-DP, we propose the concept \emph{canonical noise distribution} (CND) which captures whether an additive privacy mechanism is tailored for a given $f$, and give a construction of a CND for an arbitrary tradeoff function $f$. We show that private hypothesis tests are intimately related to CNDs, allowing for the release of private $p$-values at no additional privacy cost as well as the construction of uniformly most powerful (UMP) tests for binary data. We apply our techniques to difference of proportions testing.

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