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The Sample Complexity of Learning Lipschitz Operators with respect to Gaussian Measures

2026-09-07 12:00 Science 🔥 40.2 heat score
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On September 7, 2026, arXiv cs.LG published the paper “The Sample Complexity of Learning Lipschitz Operators with respect to Gaussian Measures”. This study explores the problem of the sample complexity required to learn Lipschitz operators under the framework of Gaussian measures.

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A arXiv cs.LG en 2026-09-07 12:00

The Sample Complexity of Learning Lipschitz Operators with respect to Gaussian Measures

本文研究了针对高斯测度的利普希茨算子近似问题,证明了其具有更高的高斯索伯列夫正则性,并建立了赫米特多项式近似误差的下界与上界。研究进一步分析了从 $m$ 个任意(可能自适应)线性样本重构利普希茨算子的通用策略,核心发现是严格刻画了相应的样本复杂度,即所有采样与重构策略中可实现的极小最坏情况误差。该结果揭示了样本复杂度的固有灾难:基于 $m$ 个线性样本的利普希茨算子近似方法无法实现关于 $m$ 的代数收敛速率;但若能证明底层高斯测度协方差算子具有足够快的谱衰减,则可保证收敛速率任意接近任何代数速率。总体而言,该工作通过严格界定样本复杂度,证实了学习利普希茨算子的内在困难性,无论数据或学习技术如何变化。