Chen, Lesi

10 publications

JMLR 2025 Near-Optimal Nonconvex-Strongly-Convex Bilevel Optimization with Fully First-Order Oracles Lesi Chen, Yaohua Ma, Jingzhao Zhang

ICLR 2025 Second-Order Min-Max Optimization with Lazy Hessians Lesi Chen, Chengchang Liu, Jingzhao Zhang

COLT 2025 Solving Convex-Concave Problems with $\mathcal{O}(\epsilon^{-4/7})$ Second-Order Oracle Complexity Lesi Chen, Chengchang Liu, Luo Luo, Jingzhao Zhang

AISTATS 2024 An Efficient Stochastic Algorithm for Decentralized Nonconvex-Strongly-Concave Minimax Optimization Lesi Chen, Haishan Ye, Luo Luo

ICML 2024 Decentralized Convex Finite-Sum Optimization with Better Dependence on Condition Numbers Yuxing Liu, Lesi Chen, Luo Luo

NeurIPS 2024 Functionally Constrained Algorithm Solves Convex Simple Bilevel Problem Huaqing Zhang, Lesi Chen, Jing Xu, Jingzhao Zhang

JMLR 2024 Near-Optimal Algorithms for Making the Gradient Small in Stochastic Minimax Optimization Lesi Chen, Luo Luo

COLT 2024 On Finding Small Hyper-Gradients in Bilevel Optimization: Hardness Results and Improved Analysis Lesi Chen, Jing Xu, Jingzhao Zhang

ICML 2023 Faster Gradient-Free Algorithms for Nonsmooth Nonconvex Stochastic Optimization Lesi Chen, Jing Xu, Luo Luo

NeurIPS 2022 Faster Stochastic Algorithms for Minimax Optimization Under Polyak-{\L}ojasiewicz Condition Lesi Chen, Boyuan Yao, Luo Luo