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新研究详细介绍了差分隐私下的Minimax和自适应协方差矩阵估计

研究人员开发了在差分隐私约束下估计协方差矩阵的新方法。该研究关注三个嵌套的协方差矩阵类别,并考虑了两种类型的损失函数。提出的估计器实现了Minimax最优速率,揭示了隐私要求如何与矩阵几何和光滑度参数相互作用。该工作还引入了可以仅以少量开销适应未知参数的自适应程序,并提出了一个新颖的差分隐私van Trees不等式来建立下界。 AI

影响 这项研究为私有统计方法奠定了理论基础,可能影响隐私保护AI算法的开发。

排序理由 该集群包含一篇详细介绍隐私约束下统计估计理论研究的学术论文。[lever_c_demoted from research: ic=1 ai=0.7]

在 arXiv cs.LG 阅读 →

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新研究详细介绍了差分隐私下的Minimax和自适应协方差矩阵估计

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该集群包含一篇详细介绍隐私约束下统计估计理论研究的学术论文。[lever_c_demoted from research: ic=1 ai=0.7]
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报道来源 [1]

  1. arXiv cs.LG TIER_1 English(EN) · T. Tony Cai, Yicheng Li ·

    差分隐私下的 Minimax 和自适应协方差矩阵估计

    arXiv:2603.19703v2 Announce Type: replace-cross Abstract: Estimating covariance matrices is fundamental to a wide range of statistical applications. This paper studies minimax and adaptive estimation of high-dimensional covariance matrices under $\rho$-zero-concentrated different…