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News/Minimax and Adaptive Covariance Matrix Estimation under Differential Privacy
arxiv
PublishedSeptember 29, 2026 at 4:00 AM
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Minimax and Adaptive Covariance Matrix Estimation under Differential Privacy

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arXiv:2603.19703v3 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 differential privacy ($\rho$-

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