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English(EN) AdaGrad does not adapt to Hölder-smoothness for composite objectives

AdaGrad 优化方案在复合目标上显示出收敛问题

一篇新发表在 arXiv 上的研究论文详细介绍了一个 AdaGrad 优化算法在应用于复合目标时存在的局限性。该论文展示了一种情况,由于其累积机制与复合最优性之间的不匹配,AdaGrad 无法达到预期的收敛速率。这是因为光滑项的梯度在最优值处可能不会减小,导致 AdaGrad 过度减小其步长并减慢收敛速度。 AI

影响 强调了优化算法中的一个理论局限性,可能影响某些机器学习模型训练的效率。

排序理由 该集群包含一篇详细介绍优化算法理论局限性的研究论文。

在 arXiv stat.ML 阅读 →

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AdaGrad 优化方案在复合目标上显示出收敛问题

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报道来源 [2]

  1. arXiv stat.ML TIER_1 English(EN) · Matia Bojovic, Saverio Salzo, Massimiliano Pontil ·

    AdaGrad 不适应复合目标的 H\"older-平滑性

    arXiv:2606.29893v1 Announce Type: cross Abstract: We exhibit a simple deterministic one-dimensional convex composite optimization problem for which AdaGrad scheme does not achieve the classical convergence rate $\mathcal{O}(n^{-(1+\nu)/2})$ associated with H\"older-smooth objecti…

  2. arXiv stat.ML TIER_1 English(EN) · Massimiliano Pontil ·

    AdaGrad 不适应复合目标的 Hölder 光滑性

    We exhibit a simple deterministic one-dimensional convex composite optimization problem for which AdaGrad scheme does not achieve the classical convergence rate $\mathcal{O}(n^{-(1+ν)/2})$ associated with Hölder-smooth objectives. The example highlights a basic mismatch between c…