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English(EN) Adaptive Hybrid Subspace Levenberg Marquardt Algorithm with Adequacy Monitor for Large Scale Least Squares Problems

新算法加速求解大规模非线性最小二乘问题

研究人员开发了一种新的自适应混合子空间Levenberg-Marquardt(HSLM)算法,旨在高效求解大规模非线性最小二乘问题。该方法利用包括梯度和曲率数据在内的各种信息源构建低维子空间,以计算阻尼LM步。一项关键创新是充分性监视器,它能在需要时自适应地丰富子空间,以及一种使用Armijo回溯解耦的步长接受策略。在神经网络训练问题上的数值实验表明,HSLM在计算成本显著降低的情况下,尤其是在高参数维度问题上,实现了与现有方法相当的收敛性。 AI

影响 通过提高优化效率,可能加速大型神经网络的训练。

排序理由 详细介绍新数值算法的学术论文。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.LG 阅读 →

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新算法加速求解大规模非线性最小二乘问题

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详细介绍新数值算法的学术论文。[lever_c_demoted from research: ic=1 ai=1.0]
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报道来源 [1]

  1. arXiv cs.LG TIER_1 English(EN) · M. Duc Hoang, Timothy J. Lewis ·

    面向大规模最小二乘问题的自适应混合子空间Levenberg-Marquardt算法及充分性监测器

    arXiv:2608.25524v1 Announce Type: cross Abstract: The Levenberg-Marquardt (LM) algorithm is the most widely used method for solving nonlinear least-squares problems, as it combines the robustness of steepest descent with the fast local convergence of the Gauss-Newton method. Howe…