Minimax and Adaptive Covariance Matrix Estimation under D...
[Submitted on 20 Mar 2026 (v1), last revised 13 Aug 2026 (this v
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2026-03-20
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via cs.LG updates on arXiv.org
arXiv:2603.19703v2 Announce Type: replace Abstract: Estimating covariance matrices is fundamental to a wide r…
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