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新方法估算神经网络训练曲率

研究人员开发了一种新颖的随机估计器,用于计算神经网络 Hessian 矩阵对角块的迹。该方法结合了 Hutchinson 估计器和单次 Hessian-向量乘积,可以在单次反向传播中实现无偏的逐层迹估计。该技术对于监控神经网络训练特别有用,因为它可以通过分析经验风险的曲率来区分健康和病态的训练模式,而这对于大型网络来说是无法直接获得的。该估计器已在 CIFAR 数据集上训练的 ResNet 和 VGG 等模型中,有效地检测出了标签记忆现象。 AI

影响 提供了一种更易于理解和监控神经网络训练内部动态的方法,有助于调试和提高模型性能。

排序理由 该集群包含一篇研究论文,详细介绍了一种用于分析神经网络训练动态的新计算方法。

在 arXiv cs.LG 阅读 →

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新方法估算神经网络训练曲率

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该集群包含一篇研究论文,详细介绍了一种用于分析神经网络训练动态的新计算方法。
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报道来源 [2]

  1. arXiv cs.LG TIER_1 English(EN) · Maxim Bolshim (ITMO University, Saint Petersburg, Russia), Alexander Kugaevskikh (ITMO University, Saint Petersburg, Russia) ·

    用于监控神经网络训练的层wise Hessian迹的随机估计

    arXiv:2605.25674v1 Announce Type: new Abstract: The loss and the norm of its gradient separate the healthy and the pathological regimes of neural-network training only weakly, whilst the curvature of the empirical risk differs qualitatively between them but is inaccessible explic…

  2. arXiv cs.LG TIER_1 English(EN) · Alexander Kugaevskikh ·

    用于监控神经网络训练的层级 Hessian 迹的随机估计

    The loss and the norm of its gradient separate the healthy and the pathological regimes of neural-network training only weakly, whilst the curvature of the empirical risk differs qualitatively between them but is inaccessible explicitly at parameter counts $P\sim 10^{6}-10^{8}$. …