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An Adaptive Multiparameter Penalty Selection Method for Multiconstraint and Multiblock ADMM [PDF]

IEEE Open Journal of Signal Processing
This work presents a new method for online selection of multiple penalty parameters for the alternating direction method of multipliers (ADMM) algorithm applied to optimization problems with multiple constraints or functions with block matrix components.
Luke Lozenski, Michael T. McCann, Brendt Wohlberg   +2 more
doaj   +2 more sources

The Improved Element-Free Galerkin Method for 3D Helmholtz Equations

Mathematics, 2021
The improved element-free Galerkin (IEFG) method is proposed in this paper for solving 3D Helmholtz equations. The improved moving least-squares (IMLS) approximation is used to establish the trial function, and the penalty technique is used to enforce ...
Heng Cheng, Miaojuan Peng
doaj   +1 more source

Influence of Soil Heterogeneity on the Contact Problems in Geotechnical Engineering

Applied Sciences, 2021
Contact problems are widely encountered in geotechnical engineering, such as the contact between soils and concrete used in earth and rockfill dams, tunnels and coastal levees.
Hao Gu, Kang Liu
doaj   +1 more source

Trust-Region Based Penalty Barrier Algorithm for Constrained Nonlinear Programming Problems: An Application of Design of Minimum Cost Canal Sections

Mathematics, 2021
In this paper, a penalty method is used together with a barrier method to transform a constrained nonlinear programming problem into an unconstrained nonlinear programming problem.
Bothina El-Sobky, Yousria Abo-Elnaga, Abd Allah A. Mousa, Mohamed A. El-Shorbagy   +3 more
doaj   +1 more source

A modular extension of a finite element contact implementation

Acta Polytechnica CTU Proceedings, 2022
The structural mechanics module of the OOFEM finite element software has been developed to include various algorithms for solving contact mechanics problems.
Ondřej Faltus, Martin Horák
doaj   +1 more source

Partially-Connected Hybrid Beamforming for Multi-User Massive MIMO Systems

IEEE Access, 2020
Due to the high power consumption and hardware cost of radio frequency (RF) chains, the conventional fully-digital beamforming will be impractical for large-scale antenna systems (LSAS).
Guangda Zang, Lingna Hu, Feng Yang, Lianghui Ding, Hui Liu   +4 more
doaj   +1 more source

Penalty method for fuzzy linear programming with trapezoidal numbers [PDF]

Yugoslav Journal of Operations Research, 2009
In this paper we shall propose an algorithm for solving fuzzy linear programming problems with trapezoidal numbers using a penalty method. We will transform the problem of maximizing a function having trapezoidal fuzzy number values under some ...
Stanojević Bogdana, Stanojević Milan
doaj   +1 more source

Numerical Analysis and Comparison of Four Stabilized Finite Element Methods for the Steady Micropolar Equations

Entropy, 2022
In this paper, four stabilized methods based on the lowest equal-order finite element pair for the steady micropolar Navier–Stokes equations (MNSE) are presented, which are penalty, regular, multiscale enrichment, and local Gauss integration methods.
Jingnan Liu, Demin Liu
doaj   +1 more source

A Lifting-Penalty Method for Quadratic Programming with a Quadratic Matrix Inequality Constraint

Mathematics, 2020
In this paper, a lifting-penalty method for solving the quadratic programming with a quadratic matrix inequality constraint is proposed. Additional variables are introduced to represent the quadratic terms.
Wei Liu, Li Yang, Bo Yu
doaj   +1 more source

Penalty Virtual Element Method for the 3D Incompressible Flow on Polyhedron Mesh

Entropy, 2022
In this paper, a penalty virtual element method (VEM) on polyhedral mesh for solving the 3D incompressible flow is proposed and analyzed. The remarkable feature of VEM is that it does not require an explicit computation of the trial and test space ...
Lulu Li, Haiyan Su, Yinnian He
doaj   +1 more source