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English(EN) Minimax Limits of k-Fold Cross-Validation via Majority

新研究揭示k折交叉验证的基本极限

一篇新的研究论文探讨了k折交叉验证的理论局限性,这是一种广泛用于估计机器学习模型性能的技术。该研究聚焦于二元分类中的多数算法,揭示了交叉验证的准确性高度依赖于折数(k)。研究人员引入了一个极小极大框架,证明当k随样本量n增长时,不可能实现O(1/n)的均方误差,且不可避免地存在Omega(sqrt(k)/n)的下界。这些发现突显了交叉验证中数据重用策略的基本约束,并指出了现有理论工作中的不准确之处。 AI

影响 强调了一种常见机器学习评估技术的理论局限性,可能指导未来对更鲁棒的验证方法的研究。

排序理由 该集群包含一篇详细介绍机器学习方法论理论研究成果的学术论文。

在 arXiv cs.LG 阅读 →

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新研究揭示k折交叉验证的基本极限

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该集群包含一篇详细介绍机器学习方法论理论研究成果的学术论文。
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报道来源 [2]

  1. arXiv cs.LG TIER_1 English(EN) · Ido Nachum, R\"udiger Urbanke, Thomas Weinberger ·

    Majority 视角下的 k-折交叉验证的极小极大界限

    arXiv:2605.25859v1 Announce Type: cross Abstract: We study the mean-squared error of $k$-fold cross-validation as a risk estimator, with particular emphasis on how its accuracy depends on the number of folds $k$. Despite the widespread use of cross-validation, principled guidance…

  2. arXiv cs.LG TIER_1 English(EN) · Thomas Weinberger ·

    Majority 视角下的 k-折交叉验证的极小极大界限

    We study the mean-squared error of $k$-fold cross-validation as a risk estimator, with particular emphasis on how its accuracy depends on the number of folds $k$. Despite the widespread use of cross-validation, principled guidance for choosing $k$ is largely absent, mainly due to…