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math.OC2022
Zeroth-Order Negative Curvature Finding: Escaping Saddle Points without Gradients
Hualin Zhang, Huan Xiong, Bin Gu
We consider escaping saddle points of nonconvex problems where only the function evaluations can be accessed. Although a variety of works have been proposed, the majority of them r…
math.OC2019★ 1 cited
Faster Gradient-Free Proximal Stochastic Methods for Nonconvex Nonsmooth Optimization
Feihu Huang, Bin Gu, Zhouyuan Huo +2
Proximal gradient method has been playing an important role to solve many machine learning tasks, especially for the nonsmooth problems. However, in some machine learning problems…