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Overcoming the Randomness-Utility Trade-off in Answering Differentially Private Linear Queries

Ghentiyala, Surendra et al.
arXiv (All) · Papers
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computational-complexitycryptography-and-security
We study the question of answering linear queries with differential privacy using few (expected) random bits. We provide a randomness-efficient analog of the $\| \cdot \|_K$-norm mechanism of Hardt and Talwar [HT10]. For the $\ell_\infty$-error, our algorithm can answer $d$ linear queries with $O(d
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