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Guang-Jian Zhang

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#machine learning Preprint Aug 2026

Exact Risk Ratios for Weighted Data Selection in Linear Regression

How much data must a fixed learner retain? Hanneke, Moran, Shlimovich and Yehudayoff (COLT 2025) posed this question for linear regression with the minimum-norm empirical risk minimizer. A selector sees a finite dataset $D\subseteq R^d\times R$, keeps at most $n$ examples with nonnegative weights, and $F_w(d,n)$ is the...

Guang-Jian Zhang · 2 citations · ⚡1

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