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English(EN) Calibrated Target Noise Recovers Curvature from the Gradients

新方法可从梯度中恢复曲率,用于机器学习优化

研究人员开发了一种新颖的方法,仅从梯度中恢复曲率信息,这是机器学习中的一个基本挑战。他们的技术包括向目标注入均值为零的噪声,其方差根据局部输出曲率进行校准。这种方法无需每样本梯度或二阶导数,即可恢复实际的曲率矩阵,例如非线性模型的广义高斯-牛顿(GGN)矩阵和ReLU网络的总体Hessian对角块。该方法被证明简单、轻量、可证明最优,并且易于集成到现有训练流程中,在实验中显示出改进的优化和提前停止的效用。 AI

影响 通过从梯度中恢复曲率信息,能够实现更高效的机器学习模型优化和采样。

排序理由 学术论文,详细介绍了一种新的机器学习优化方法。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.LG 阅读 →

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新方法可从梯度中恢复曲率,用于机器学习优化

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学术论文,详细介绍了一种新的机器学习优化方法。[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) · Arash Jamshidi, Katsiaryna Haitsiukevich, Aristides Gionis, Kai Puolam\"aki ·

    校准目标噪声可从梯度中恢复曲率

    arXiv:2611.07671v1 Announce Type: new Abstract: Estimating curvature information from gradients alone is a fundamental problem in machine learning. The challenge becomes particularly acute in settings where only aggregate mini-batch gradients are available, yet curvature informat…