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Liang-Yu Zou

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#machine learning Preprint Oct 2026

Hypothesis Selection via Weighted Medians

The running time improves the dependence on the failure probability from polynomial to logarithmic in the state-of-the-art bound $\tilde{O}(n\varepsilon^{-2}\delta^{-1})$ of Aamand, Aliakbarpour, Chen, and Silwal (COLT 2026), thereby answering their Question~2.

Liang-Yu Zou · 0 citations
#machine learning Preprint Oct 2026

Boosting and the Expressive Power of Simple Weak Learners via the $\gamma$-VC Dimension

Boosting converts weak hypotheses with a small edge over random guessing into highly accurate predictors, but the expressive power of the resulting classifier can depend strongly on the structure of the base class. We study this phenomenon through the $\gamma$-VC dimension introduced by Alon et al. (STOC 2021). Our fir...

Arthur da Cunha, Kasper Green Larsen, Liang-Yu Zou · 0 citations

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