Additive Schwarz methods for convex optimization as gradient methods

J Park - SIAM Journal on Numerical Analysis, 2020 - SIAM
This paper gives a unified convergence analysis of additive Schwarz methods for general
convex optimization problems. Resembling the fact that additive Schwarz methods for linear …

Two-level group convolution

Y Lee, J Park, CO Lee - Neural Networks, 2022 - Elsevier
Group convolution has been widely used in order to reduce the computation time of
convolution, which takes most of the training time of convolutional neural networks …

Additive Schwarz methods for convex optimization with backtracking

J Park - Computers & Mathematics with Applications, 2022 - Elsevier
This paper presents a novel backtracking strategy for additive Schwarz methods for general
convex optimization problems as an acceleration scheme. The proposed backtracking …

Recent advances in domain decomposition methods for total variation minimization

CO Lee, J Park - Journal of the Korean Society for Industrial and Applied …, 2020 - dbpia.co.kr
Total variation minimization is standard in mathematical imaging and there have been
numerous researches over the last decades. In order to process large-scale images in real …

Accelerated additive Schwarz methods for convex optimization with adaptive restart

J Park - Journal of Scientific Computing, 2021 - Springer
Based on an observation that additive Schwarz methods for general convex optimization
can be interpreted as gradient methods, we propose an acceleration scheme for additive …

Fast Non-overlapping Domain Decomposition Methods for Continuous Multi-phase Labeling Problem

Z Zhang, H Chang, Y Duan - Journal of Scientific Computing, 2023 - Springer
This paper presents the domain decomposition methods (DDMs) for achieving fast parallel
computing on multi-core computers when dealing with the multi-phase labeling problem. To …

Accelerated Non-Overlapping Domain Decomposition Method for Total Variation Minimization.

X Li, Z Zhang, H Chang, Y Duan - … : Theory, Methods & …, 2021 - search.ebscohost.com
We concern with fast domain decomposition methods for solving the total variation
minimization problems in image processing. By decomposing the image domain into non …

Subspace correction methods for semicoercive and nearly semicoercive convex optimization with applications to nonlinear PDEs

YJ Lee, J Park - arXiv preprint arXiv:2412.17318, 2024 - arxiv.org
We present new convergence analyses for subspace correction methods for semicoercive
and nearly semicoercive convex optimization problems, generalizing the theory of singular …

A general decomposition method for a convex problem related to total variation minimization

S Hilb, A Langer - arXiv preprint arXiv:2211.00101, 2022 - arxiv.org
We consider sequential and parallel decomposition methods for a dual problem of a general
total variation minimization problem with applications in several image processing tasks, like …

Domain decomposition for non-smooth (in particular TV) minimization

A Langer - Handbook of Mathematical Models and Algorithms in …, 2021 - Springer
Abstract Domain decomposition is one of the most efficient techniques to derive efficient
methods for large-scale problems. In this chapter such decomposition methods for the …