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J. Fitzsimons

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Jul 2026

Better Privacy Guarantees for Larger Groups

This work makes the boundary tolerance explicit by requiring $\mathbb{E}\lvert\widehat{x}_i-x_i-x_i\rvert<r\max\{x_i,1\}$, without changing the requirement at any positive count.

J. Fitzsimons · 1 citation
Jul 2026

Pure-DP Statistical Query Release at the Conjectured Square-Root Rate

The conjectured upper bound of k statistical queries on a universe of size T can be released under pure differential privacy with expected worst-coordinate error at the square-root rate suggested by known lower bounds is proved.

J. Fitzsimons · 0 citations

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