no code implementations • 15 Feb 2024 • Tongliang Yao, Zi Xu
In this paper, we propose a Minimax Trust Region (MINIMAX-TR) algorithm and a Minimax Trust Region Algorithm with Contractions and Expansions(MINIMAX-TRACE) algorithm for solving nonconvex-strongly concave minimax problems.
no code implementations • 26 Jan 2024 • Huiling Zhang, Zi Xu, Yuhong Dai
nonconvex-concave) minimax problems with coupled linear constraints under deterministic settings and $\tilde{\mathcal{O}}(\varepsilon ^{-3})$ (resp.
no code implementations • 24 Oct 2023 • Huiling Zhang, Zi Xu
Stochastic nonconvex minimax problems have attracted wide attention in machine learning, signal processing and many other fields in recent years.
no code implementations • 9 Dec 2022 • Huiling Zhang, Junlin Wang, Zi Xu, Yu-Hong Dai
The iteration complexity of the two algorithms are proved to be $\mathcal{O}\left( \varepsilon ^{-2} \right)$ (resp.
no code implementations • 24 Nov 2022 • Zi Xu, Zi-Qi Wang, Jun-Lin Wang, Yu-Hong Dai
In this paper, we consider a class of nonconvex-nonconcave minimax problems, i. e., NC-PL minimax problems, whose objective functions satisfy the Polyak-\L ojasiewicz (PL) condition with respect to the inner variable.
no code implementations • 1 Aug 2021 • Zi Xu, Ziqi Wang, Jingjing Shen, Yuhong Dai
In this paper, we study zeroth-order algorithms for nonconvex-concave minimax problems, which have attracted widely attention in machine learning, signal processing and many other fields in recent years.
no code implementations • 3 Jun 2020 • Zi Xu, Huiling Zhang, Yang Xu, Guanghui Lan
Moreover, its gradient complexity to obtain an $\varepsilon$-stationary point of the objective function is bounded by $\mathcal{O}\left( \varepsilon ^{-2} \right)$ (resp., $\mathcal{O}\left( \varepsilon ^{-4} \right)$) under the strongly convex-nonconcave (resp., convex-nonconcave) setting.