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arXiv 2202.01100cs.CRcs.DB
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高斯稀疏直方图机制的精确隐私分析

Exact Privacy Analysis of the Gaussian Sparse Histogram Mechanism

Brian Karrer, Daniel Kifer, Arjun Wilkins, Danfeng Zhang

摘要:

稀疏直方图方法可用于返回大型或无限直方图中的项的差异私有计数、大型group-by查询,以及更一般地,释放具有足够项计数的统计信息集。我们考虑高斯版本的稀疏直方图机制和研究的确切$ε,δ$差分隐私保证满足此机制。我们将这些精确的$ε,δ$参数与先前工作中使用的简单高估参数进行比较,以量化其较宽松的隐私边界的影响。

英文摘要:

Sparse histogram methods can be useful for returning differentially private counts of items in large or infinite histograms, large group-by queries, and more generally, releasing a set of statistics with sufficient item counts. We consider the Gaussian version of the sparse histogram mechanism and study the exact $ε,δ$ differential privacy guarantees satisfied by this mechanism. We compare these exact $ε,δ$ parameters to the simpler overestimates used in prior work to quantify the impact of their looser privacy bounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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