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arXiv 2403.05073cs.CR
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隐私计数发布:一种用于隐私数据分析的简单可扩展方法

Private Count Release: A Simple and Scalable Approach for Private Data Analytics

Ryan Rogers

AI总结:

本研究提出一种无需依赖ℓ₀敏感度贡献边界的差分隐私计数发布数据分析系统,仅需少量接入工作与超参数调优,就能发布更多更准确的结果,可推动差分隐私在更多数据分析场景的规模化应用。

摘要:

我们提出了一种数据分析系统,该系统能够以差分隐私保障发布准确的计数值,且所需的接入工作量极小,同时我们展示了该系统在部分场景下的表现优于其他需要更多接入工作量的方法。我们的方案与现有方法的核心区别在于,它不依赖于针对不同元素的用户贡献边界(即ℓ₀敏感度边界),而这类边界会给计数值带来显著偏差。此前ℓ₀敏感度的贡献边界一直被视为实现差分隐私的必要条件,但我们证明这实际上并非必需,且摒弃该边界后可以发布更多、更准确的结果。我们的方法仅需极少的超参数调优,并在多个公开数据集上验证了效果。我们希望该方法能助力差分隐私拓展至更多不同的数据分析应用场景。

英文摘要:

We present a data analytics system that ensures accurate counts can be released with differential privacy and minimal onboarding effort while showing instances that outperform other approaches that require more onboarding effort. The primary difference between our proposal and existing approaches is that it does not rely on user contribution bounds over distinct elements, i.e. $\ell_0$-sensitivity bounds, which can significantly bias counts. Contribution bounds for $\ell_0$-sensitivity have been considered as necessary to ensure differential privacy, but we show that this is actually not necessary and can lead to releasing more results that are more accurate. We require minimal hyperparameter tuning and demonstrate results on several publicly available dataset. We hope that this approach will help differential privacy scale to many different data analytics applications.

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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