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.
Achieving AWGN channel capacity with lattice Gaussian coding.IEEE Transactions on Information Theory, 60(10):5918–5929, 2014
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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.