Results 31 to 40 of about 510 (73)

A modified inertial proximal alternating direction method of multipliers with dual-relaxed term for structured nonconvex and nonsmooth problem

open access: yesJournal of Inequalities and Applications
In this research, we introduce a novel optimization algorithm termed the dual-relaxed inertial alternating direction method of multipliers (DR-IADM), tailored for handling nonconvex and nonsmooth problems. These problems are characterized by an objective
Yang Liu, Long Wang, Yazheng Dang
doaj   +1 more source

The Extended Second APG Method for Constrained DC Problems

open access: yesAxioms
In this paper, we develop the extended proximal gradient algorithm with Nesterov’s second acceleration (EAPGs) for constrained difference-of-convex (DC) optimization problems.
Ziye Liu, Huitao Ke, Chunguang Liu
doaj   +1 more source

Sequential inertial linear ADMM algorithm for nonconvex and nonsmooth multiblock problems with nonseparable structure

open access: yesJournal of Inequalities and Applications
The alternating direction method of multipliers (ADMM) has been widely used to solve linear constrained problems in signal processing, matrix decomposition, machine learning, and many other fields.
Zhonghui Xue   +3 more
doaj   +1 more source

A Simple and Efficient Algorithm for Nonlinear Model Predictive Control

open access: yes, 2017
We present PANOC, a new algorithm for solving optimal control problems arising in nonlinear model predictive control (NMPC). A usual approach to this type of problems is sequential quadratic programming (SQP), which requires the solution of a quadratic ...
Patrinos, Panagiotis   +3 more
core   +1 more source

Convolutional Dictionary Learning: Acceleration and Convergence

open access: yes, 2017
Convolutional dictionary learning (CDL or sparsifying CDL) has many applications in image processing and computer vision. There has been growing interest in developing efficient algorithms for CDL, mostly relying on the augmented Lagrangian (AL) method ...
Chun, Il Yong, Fessler, Jeffrey A.
core   +1 more source

A Multi-step Inertial Forward--Backward Splitting Method for Non-convex Optimization

open access: yes, 2016
In this paper, we propose a multi-step inertial Forward--Backward splitting algorithm for minimizing the sum of two non-necessarily convex functions, one of which is proper lower semi-continuous while the other is differentiable with a Lipschitz ...
Fadili, Jalal   +2 more
core  

Convergence of the Forward-Backward Algorithm: Beyond the Worst Case with the Help of Geometry

open access: yes, 2017
We provide a comprehensive study of the convergence of forward-backward algorithm under suitable geometric conditions leading to fast rates. We present several new results and collect in a unified view a variety of results scattered in the literature ...
Garrigos, Guillaume   +2 more
core  

Optimization of a Fast Transform Structured as a Convolutional Tree [PDF]

open access: yes, 2016
To reduce the dimension of large datasets, it is common to express each vector of this dataset using few atoms of a redundant dictionary. In order to select these atoms, many models and algorithms have been proposed, leading to state-of-the-art ...
Chabiron, Olivier   +3 more
core   +1 more source

Arcwise Analytic Stratification, Whitney Fibering Conjecture and Zariski Equisingularity

open access: yes, 2017
In this paper we show Whitney's fibering conjecture in the real and complex, local analytic and global algebraic cases. For a given germ of complex or real analytic set, we show the existence of a stratification satisfying a strong (real arc-analytic ...
Parusiński, Adam, Paunescu, Laurentiu
core  

Proximal Alternating Direction Network: A Globally Converged Deep Unrolling Framework

open access: yes, 2017
Deep learning models have gained great success in many real-world applications. However, most existing networks are typically designed in heuristic manners, thus lack of rigorous mathematical principles and derivations.
Cheng, Shichao   +4 more
core   +1 more source

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