Publications

You can find my articles on my Google Scholar.

* denotes equal contributions.

Preprints

• Second-Order Min-Max Optimization with Lazy Hessians.
  Lesi Chen*, Chengchang Liu*, and Jingzhao Zhang. [arXiv 2024]

• Near-Optimal Nonconvex-Strongly-Convex Bilevel Optimization with Fully First-Order Oracles.
  Lesi Chen*, Yaohua Ma*, and Jingzhao Zhang. [arXiv 2023]

Publications

• Near-Optimal Algorithms for Making the Gradient Small in Stochastic Minimax Optimization.
  Lesi Chen and Luo Luo. [JMLR 2024]

• Functionally Constrained Algorithm Solves Convex Simple Bilevel Problems.
  Huaqing Zhang*, Lesi Chen*, Jing Xu, and Jingzhao Zhang. [NeurIPS 2024]

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

• Faster Gradient-Free Algorithms for Nonsmooth Nonconvex Stochastic Optimization.
  Lesi Chen, Jing Xu, and Luo Luo. [ICML 2023]

• Faster Stochastic Algorithms for Minimax Optimization under Polyak-Łojasiewicz Condition.
  Lesi Chen, Boyuan Yao, and Luo Luo. [NeurIPS 2022]