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arXiv · 2606.01554

Fast Near-Optimal Estimation over Symmetric Norm Balls

Matey Neykov
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Abstract

This short note proposes a polynomial-time algorithm for near-optimal Euclidean estimation of a signal constrained to lie in the unit ball of a symmetric norm, where the symmetry is with respect to a known basis and the norm is accessible through an evaluation oracle. We further extend the method to a random-design, moderate-dimensional linear regression setting, where the regression parameter is likewise assumed to belong to a constraint set defined by a symmetric norm.

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Matey Neykov. 2026-06-01. Fast Near-Optimal Estimation over Symmetric Norm Balls. https://arxiv.org/abs/2606.01554

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