The dithered Gaussian mechanism discretizes the output of the Gaussian mechanism via a randomly shifted grid, inheriting Gaussian privacy guarantees while reducing private randomness to a constant per coordinate.
Avoiding floating-point side channels in the report noisy max with gap mechanism.Journal of Privacy and Confidentiality, 15(3), 2025
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Dithered Gaussian Mechanism for Randomness-Efficient Differential Privacy
The dithered Gaussian mechanism discretizes the output of the Gaussian mechanism via a randomly shifted grid, inheriting Gaussian privacy guarantees while reducing private randomness to a constant per coordinate.