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The Douglas-Rachford algorithm is a classical and powerful splitting method for minimizing the sum of two convex functions and, more generally, finding a zero of the sum of two maximally monotone operators. Although this algorithm is well…

最优化与控制 · 数学 2020-04-14 Minh N. Dao , Hung M. Phan

In this paper, we present a Douglas-Rachford splitting algorithm within a Hilbert space framework that yields a projected solution for a quasi-variational inequality. This is achieved under the conditions that the operator associated with…

最优化与控制 · 数学 2024-07-19 Maede Ramazannejad

A subgradient method is presented for solving general convex optimization problems, the main requirement being that a strictly-feasible point is known. A feasible sequence of iterates is generated, which converges to within user-specified…

最优化与控制 · 数学 2016-05-30 James Renegar

In this paper we propose a variant of the random coordinate descent method for solving linearly constrained convex optimization problems with composite objective functions. If the smooth part of the objective function has Lipschitz…

最优化与控制 · 数学 2013-02-14 Ion Necoara , Andrei Patrascu

Projective splitting is a family of methods for solving inclusions involving sums of maximal monotone operators. First introduced by Eckstein and Svaiter in 2008, these methods have enjoyed significant innovation in recent years, becoming…

最优化与控制 · 数学 2020-02-19 Patrick R. Johnstone , Jonathan Eckstein

We identify and analyze a fundamental limitation of the classical projected subgradient method in nonsmooth convex optimization: the inevitable failure caused by the absence of valid subgradients at boundary points. We show that, under…

最优化与控制 · 数学 2026-02-17 Zhihan Zhu , Yanhao Zhang , Yong Xia

This paper deals with composite optimization problems having the objective function formed as the sum of two terms, one has Lipschitz continuous gradient along random subspaces and may be nonconvex and the second term is simple and…

最优化与控制 · 数学 2024-01-10 I. Necoara , F. Chorobura

Many recently proposed gradient projection algorithms with inertial extrapolation step for solving quasi-variational inequalities in Hilbert spaces are proven to be strongly convergent with no linear rate given when the cost operator is…

最优化与控制 · 数学 2024-04-23 Yonghong Yao , Lateef O. Jolaoso , Yekini Shehu

We consider the projected gradient algorithm for the nonconvex best subset selection problem that minimizes a given empirical loss function under an $\ell_0$-norm constraint. Through decomposing the feasible set of the given sparsity…

最优化与控制 · 数学 2026-02-13 Jan Harold Alcantara , Ching-pei Lee

We consider the problem of minimizing a convex objective which is the sum of a smooth part, with Lipschitz continuous gradient, and a nonsmooth part. Inspired by various applications, we focus on the case when the nonsmooth part is a…

最优化与控制 · 数学 2013-08-28 Ting Kei Pong

This work is devoted to establish the strong convergence results of an iterative algorithm generated by the shrinking projection method in Hilbert spaces. The proposed approximation sequence is used to find a common element in the set of…

泛函分析 · 数学 2018-03-07 Abdul Ghaffar , Zafar Ullah , Muhammad Aqeel Ahmad Khan , Faisal Mumtaz

We propose in this work a subgradient extragradient method with inertial and correction terms for solving equilibrium problems in a real Hilbert space. We obtain that the sequence generated by our proposed method converges weakly to a point…

For solving a broad class of nonconvex programming problems on an unbounded constraint set, we provide a self-adaptive step-size strategy that does not include line-search techniques and establishes the convergence of a generic approach…

最优化与控制 · 数学 2022-12-14 Thang Tran Ngoc , Hai Trinh Ngoc

In this paper, we introduce a stochastic projected subgradient method for weakly convex (i.e., uniformly prox-regular) nonsmooth, nonconvex functions---a wide class of functions which includes the additive and convex composite classes. At a…

最优化与控制 · 数学 2018-09-19 Damek Davis , Benjamin Grimmer

This paper proposes an extra gradient Anderson-accelerated algorithm for solving pseudomonotone variational inequalities, which uses the extra gradient scheme with line search to guarantee the global convergence and Anderson acceleration to…

最优化与控制 · 数学 2026-05-27 Xin Qu , Wei Bian , Xiaojun Chen

The variational inequality problem in finite-dimensional Euclidean space is addressed in this paper, and two inexact variants of the extragradient method are proposed to solve it. Instead of computing exact projections on the constraint…

最优化与控制 · 数学 2024-06-24 R. Díaz Millán , O. P. Ferreira , J. Ugon

We present a subgradient method for minimizing non-smooth, non-Lipschitz convex optimization problems. The only structure assumed is that a strictly feasible point is known. We extend the work of Renegar [5] by taking a different…

最优化与控制 · 数学 2018-02-28 Benjamin Grimmer

In this paper, the purpose is to introduce and study a new modified shrinking projection algorithm with inertial effects, which solves split common fixed point problems in Banach spaces. The corresponding strong convergence theorems are…

最优化与控制 · 数学 2020-08-31 Zheng Zhou , Bing Tan , Songxiao Li

The subgradient method is one of the most fundamental algorithmic schemes for nonsmooth optimization. The existing complexity and convergence results for this method are mainly derived for Lipschitz continuous objective functions. In this…

最优化与控制 · 数学 2024-11-01 Xiao Li , Lei Zhao , Daoli Zhu , Anthony Man-Cho So

In this paper we propose and analyze three parallel hybrid extragradient methods for finding a common element of the set of solutions of equilibrium problems involving pseudomonotone bifunctions and the set of fixed points of nonexpansive…

最优化与控制 · 数学 2015-12-24 Dang Van Hieu , Le Dung Muu , Pham Ky Anh