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In this work we consider an iterative method for solving the quasi-convex feasibility problem. We firstly introduce the so-called star subgradient projection operator and present some useful properties. We subsequently obtain a convergence…

最优化与控制 · 数学 2020-01-28 Nimit Nimana , Narin Petrot

The 2-sets convex feasibility problem aims at finding a point in the nonempty intersection of two closed convex sets $A$ and $B$ in a Hilbert space $X$. The method of alternating projections is the simplest iterative procedure for finding a…

最优化与控制 · 数学 2020-06-29 Carlo A. De Bernardi , Enrico Miglierina

In this paper, we propose a new method that combines the inexact Newton method with a procedure to obtain a feasible inexact projection for solving constrained smooth and nonsmooth equations. The local convergence theorems are established…

最优化与控制 · 数学 2019-03-19 Fabiana R. de Oliveira , Orizon P. Ferreira

A new adaptive approach is proposed for variational inequalities with a Lipschitz-continuous field. Estimates of the necessary number of iterations are obtained to achieve a given quality of the variational inequality solution. A…

最优化与控制 · 数学 2018-12-27 Fedor Stonyakin , Alexander Gasnikov , Pavel Dvurechensky , Alexander Titov

This paper is intended to solve the nonconvex $\ell_{p}$-ball constrained nonlinear optimization problems. An iteratively reweighted method is proposed, which solves a sequence of weighted $\ell_{1}$-ball projection subproblems. At each…

最优化与控制 · 数学 2024-10-28 Hao Wang , Xiangyu Yang , Wei Jiang

A numerical scheme is presented to solve the one source near field refractor problem to arbitrary precision and it is proved that the scheme terminates in a finite number of iterations. The convergence of the algorithm depends upon proving…

数值分析 · 数学 2019-04-26 Cristian E. Gutiérrez , Henok Mawi

This paper is to analyze the approximation solution of a split variational inclusion problem in the framework of infinite dimensional Hilbert spaces. For this purpose, several inertial hybrid and shrinking projection algorithms are proposed…

最优化与控制 · 数学 2024-09-17 Zheng Zhou , Bing Tan , Songxiao Li

This paper deals with the convex feasibility problem, where the feasible set is given as the intersection of a (possibly infinite) number of closed convex sets. We assume that each set is specified algebraically as a convex inequality,…

最优化与控制 · 数学 2019-09-27 Ion Necoara , Angelia Nedich

We introduce a new system of split variational inequality problems which is a natural extension of split variational inequality problem in semi-inner product spaces. We use the retraction technique to propose an iterative algorithm for…

泛函分析 · 数学 2017-01-20 K. R. Kazmi , Mohd Furkan

In this paper, we consider the inverse problem of determining the location and the shape of a sound-soft obstacle from the modulus of the far-field data for a single incident plane wave. By adding a reference ball artificially to the…

数值分析 · 数学 2018-04-17 Heping Dong , Deyue Zhang , Yukun Guo

We propose and study the weak convergence of a projective splitting algorithm for solving multi-term composite monotone inclusion problems involving the finite sum of $n$ maximal monotone operators, each of which having an inner four-block…

最优化与控制 · 数学 2024-05-08 M. Marques Alves

It is well known that the projection method is not convergent for monotone equilibrium problems. Recently Sosa \textit{et al.} in \cite{SS2011} proposed a projection algorithm ensuring convergence for paramonotone equilibrium problems. In…

最优化与控制 · 数学 2018-04-30 Le Dung Muu , Phung Minh Duc , Xuan Thanh Le

Consider convex optimization problems subject to a large number of constraints. We focus on stochastic problems in which the objective takes the form of expected values and the feasible set is the intersection of a large number of convex…

机器学习 · 统计学 2015-11-13 Mengdi Wang , Yichen Chen , Jialin Liu , Yuantao Gu

We consider constrained minimization problems and propose to replace the projection onto the entire feasible region, required in the Projected Subgradient Method (PSM), by projections onto the individual sets whose intersection forms the…

最优化与控制 · 数学 2013-08-30 Y. Censor , A. J. Zaslavski

In this paper, we propose an algorithm combining the forward-backward splitting method and the alternative projection method for solving the system of splitting inclusion problem. We want to find a point in the interception of a finite…

最优化与控制 · 数学 2016-04-08 R. Díaz Millán

A new class of projected dynamical systems of third order is investigated for quasi (parametric) variational inequalities in which the convex set in the classical variational inequality also depends upon the solution explicitly or…

最优化与控制 · 数学 2025-01-10 Oday Hazaimah

For many applications in signal processing and machine learning, we are tasked with minimizing a large sum of convex functions subject to a large number of convex constraints. In this paper, we devise a new random projection method (RPM) to…

最优化与控制 · 数学 2024-04-08 Zhichun Yang , Fu-quan Xia , Kai Tu , Man-Chung Yue

In this paper we develop a stochastic heavy ball method for solving ill-posed inverse problems. The method updates the iterate using only a randomly selected equation at each iteration step while incorporating a momentum term into the…

数值分析 · 数学 2026-05-14 Ruixue Gu , Qinian Jin

The article is devoted to some adaptive methods for variational inequalities with relatively smooth and relatively strongly monotone operators. Starting from the recently proposed proximal variant of the extragradient method for this class…

最优化与控制 · 数学 2023-08-02 S. S. Ablaev , F. S. Stonyakin , M. S. Alkousa , D. A. Pasechnyuk

We study some methods of subgradient projections for solving a convex feasibility problem with general (not necessarily hyperplanes or half-spaces) convex sets in the inconsistent case and propose a strategy that controls the relaxation…

最优化与控制 · 数学 2010-09-21 Dan Butnariu , Yair Censor , Pini Gurfil , Ethan Hadar