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English(EN) Dimension-Free Private Mean Estimation is Impossible Without the Covariance

研究发现:无协方差矩阵的隐私均值估计不可能实现

一篇新发表在arXiv上的研究论文探讨了在协方差矩阵未知的情况下,差分隐私高斯均值估计的局限性。研究建立了下界,表明隐私估计器无法获得与已知协方差时相同的保证。具体而言,最优误差可能显著更大,取决于样本量相对于有效维度的比例,误差会增大 $\sqrt{d/n}$ 或 $\sqrt{d}/n^{3/2}$ 倍。这些发现表明,在协方差未知的设置中,差分隐私可能需要维度相关的误差或样本复杂度。 AI

影响 强调了保护隐私的机器学习算法的理论约束,可能影响安全人工智能开发的未来研究。

排序理由 发表在arXiv上的研究论文,详细介绍了保护隐私算法的理论极限。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.LG 阅读 →

AI 生成摘要 · Google Gemini · 来自 1 个来源。 我们如何撰写摘要 →

研究发现:无协方差矩阵的隐私均值估计不可能实现

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发表在arXiv上的研究论文,详细介绍了保护隐私算法的理论极限。[lever_c_demoted from research: ic=1 ai=1.0]
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报道来源 [1]

  1. arXiv cs.LG TIER_1 English(EN) · Renaud Gaucher, Ephraim Linder, Adam Smith, Jonathan Ullman, Lydia Zakynthinou ·

    没有协方差,无法实现无量纲隐私均值估计

    arXiv:2611.06615v1 Announce Type: new Abstract: We study the limits of differentially private Gaussian mean estimation when the covariance matrix is unknown. Prior work shows that when the covariance $\Sigma$ is known, the optimal sample complexity can depend only on its spectrum…