Lei Li

most citedSPAN: A Stochastic Projected Approximate Newton Method

2 citations · 4 across the 3 of their papers we have counts for

collaborators

3 papers

math.OC2020★ 2 cited

Adaptive Gradient Methods Can Be Provably Faster than SGD after Finite Epochs

Xunpeng Huang, Hao Zhou, Runxin Xu +2

Adaptive gradient methods have attracted much attention of machine learning communities due to the high efficiency. However their acceleration effect in practice, especially in neu…

math.OC2020★ 2 cited

SPAN: A Stochastic Projected Approximate Newton Method

Xunpeng Huang, Xianfeng Liang, Zhengyang Liu +4

Second-order optimization methods have desirable convergence properties. However, the exact Newton method requires expensive computation for the Hessian and its inverse. In this pa…

math.FA2016

Quantifications of strictly singular operators and strictly cosingular operators

Lei Li, Dongyang Chen

We investigate possible quantifications of strictly singular operators, $l_{p}$ -strictly singular operators, $c_{0}$ -strictly singular operators, strictly cosingular operators, $l_…