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English(EN) Non-Expansive Two-Time-Scale Stochastic Approximation: A Fixed-Schedule One-Quarter Barrier and Bias-Corrected Acceleration

新的随机逼近方法提高了收敛速度 · 跟踪 2 个来源

研究人员开发了一种新的非扩张性双时间尺度随机逼近方法,解决了收敛性不保证收缩到唯一平衡点的情况。该研究引入了一种残差预处理的慢速预言机,显著降低了对快速跟踪误差的依赖,将嵌套 Tikhonov-KM 算法的样本率从 T^{-1/4+o(1)} 提高到 T^{-1/3+o(1)}。此外,还提出了一种单循环算法,通过在线跟踪快速平衡点和泄漏预处理器,实现了 T^{-1/2+o(1)} 的速率,避免了重复的内循环成本。 AI

影响 为随机逼近算法带来了理论上的改进,有可能提高机器学习模型的训练效率。

排序理由 该集群包含两个相同的 arXiv 预印本,详细介绍了机器学习统计学中的一种新理论方法。

在 arXiv stat.ML 阅读 →

AI 生成摘要 · Google Gemini · 来自 2 个来源。 我们如何撰写摘要 →

新的随机逼近方法提高了收敛速度 · 跟踪 2 个来源

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该集群包含两个相同的 arXiv 预印本,详细介绍了机器学习统计学中的一种新理论方法。
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报道来源 [2]

  1. arXiv stat.ML TIER_1 English(EN) · Dhruv Sarkar, Vaneet Aggarwal ·

    非扩张性双时间尺度随机逼近:固定时间表四分之一障碍和偏差校正加速

    arXiv:2607.13414v1 Announce Type: new Abstract: Non-expansive two-time-scale stochastic approximation is governed by a slow stochastic Krasnoselskii--Mann fixed-point iteration rather than by contraction to a unique equilibrium. We study this regime under a contractive fast map a…

  2. arXiv stat.ML TIER_1 English(EN) · Vaneet Aggarwal ·

    非扩张性双时间尺度随机逼近:固定时间表四分之一障碍和偏差校正加速

    Non-expansive two-time-scale stochastic approximation is governed by a slow stochastic Krasnoselskii--Mann fixed-point iteration rather than by contraction to a unique equilibrium. We study this regime under a contractive fast map and a non-expansive reduced slow map. We first pr…