Investigating bi-level optimization for learning and vision from a unified perspective: A survey and beyond
Bi-Level Optimization (BLO) is originated from the area of economic game theory and then
introduced into the optimization community. BLO is able to handle problems with a …
introduced into the optimization community. BLO is able to handle problems with a …
A first order method for solving convex bilevel optimization problems
In this paper we study convex bilevel optimization problems for which the inner level
consists of minimization of the sum of smooth and nonsmooth functions. The outer level aims …
consists of minimization of the sum of smooth and nonsmooth functions. The outer level aims …
An inertial extrapolation method for convex simple bilevel optimization
We consider a scalar objective minimization problem over the solution set of another
optimization problem. This problem is known as a simple bilevel optimization problem and …
optimization problem. This problem is known as a simple bilevel optimization problem and …
Superiorization: An optimization heuristic for medical physics
Purpose: To describe and mathematically validate the superiorization methodology, which is
a recently developed heuristic approach to optimization, and to discuss its applicability to …
a recently developed heuristic approach to optimization, and to discuss its applicability to …
Projected subgradient minimization versus superiorization
The projected subgradient method for constrained minimization repeatedly interlaces
subgradient steps for the objective function with projections onto the feasible region, which …
subgradient steps for the objective function with projections onto the feasible region, which …
Alternated and multi-step inertial approximation methods for solving convex bilevel optimization problems
P Duan, Y Zhang - Optimization, 2023 - Taylor & Francis
In this paper, we propose three kinds of inertial approximation methods based on the
proximal gradient algorithm to accelerate the convergence of the algorithm for solving …
proximal gradient algorithm to accelerate the convergence of the algorithm for solving …
An iterative regularized incremental projected subgradient method for a class of bilevel optimization problems
M Amini, F Yousefian - 2019 American Control Conference …, 2019 - ieeexplore.ieee.org
We study a class of bilevel convex optimization problems where the goal is to find the
minimizer of an objective function in the upper level, among the set of all optimal solutions of …
minimizer of an objective function in the upper level, among the set of all optimal solutions of …
ϵ-subgradient algorithms for bilevel convex optimization
ES Helou, LEA Simões - Inverse problems, 2017 - iopscience.iop.org
This paper introduces and studies the convergence properties of a new class of explicit
epsilon-subgradient methods for the task of minimizing a convex function over a set of …
epsilon-subgradient methods for the task of minimizing a convex function over a set of …
An iterative regularized mirror descent method for ill-posed nondifferentiable stochastic optimization
M Amini, F Yousefian - arXiv preprint arXiv:1901.09506, 2019 - arxiv.org
A wide range of applications arising in machine learning and signal processing can be cast
as convex optimization problems. These problems are often ill-posed, ie, the optimal …
as convex optimization problems. These problems are often ill-posed, ie, the optimal …
Superiorization for image analysis
GT Herman - … Image Analysis: 16th International Workshop, IWCIA …, 2014 - Springer
Many scientific, engineering and medical applications of image analysis use constrained
optimization, with the constraints arising from the desire to produce a solution that is …
optimization, with the constraints arising from the desire to produce a solution that is …