Results 101 to 110 of about 45,742 (207)

Truss Structure Optimization with Subset Simulation and Augmented Lagrangian Multiplier Method

Algorithms, 2017
This paper presents a global optimization method for structural design optimization, which integrates subset simulation optimization (SSO) and the dynamic augmented Lagrangian multiplier method (DALMM).
Feng Du, Qiao-Yue Dong, Hong-Shuang Li
doaj   +1 more source

Hybridized augmented Lagrangian methods for contact problems

Computer Methods in Applied Mechanics and Engineering
This paper addresses the problem of friction-free contact between two elastic bodies. We develop an augmented Lagrangian method that provides computational convenience by reformulating the contact problem as a nonlinear variational equality. To achieve this, we propose a Nitsche-based method incorporating a hybrid displacement variable defined on an ...
Erik Burman, Peter Hansbo, Mats G. Larson   +2 more
openaire   +3 more sources

Variational Poisson denoising via augmented Lagrangian methods

ETNA - Electronic Transactions on Numerical Analysis
In this paper, we denoise a given noisy image by minimizing a smoothness promoting function over a set of local similarity measures which compare the mean of the given image and some candidate image on a large collection of subboxes. The associated convex optimization problem possesses a huge number of constraints which are induced by extended real ...
Kanzow, Christian, Krämer, Fabius, Mehlitz, Patrick, Wachsmuth, Gerd, Werner, Frank   +4 more
openaire   +3 more sources

Pontryagin’s Principle-Based Algorithms for Optimal Control Problems of Parabolic Equations

Mathematics
This paper applies the Method of Successive Approximations (MSA) based on Pontryagin’s principle to solve optimal control problems with state constraints for semilinear parabolic equations.
Weilong You, Fu Zhang
doaj   +1 more source

Mathematical analysis and numerical methods for pricing pension plans allowing early retirement [PDF]

In this paper, we address the mathematical analysis and numerical solution of a model for pricing a defined benefit pension plan. More precisely, the benefits received by the member of the plan depend on the average salary and early retirement is allowed.
Calvo-Garrido, Maria del Carmen, Pascucci, Andrea, Vázquez Cendón, Carlos   +2 more
core   +1 more source

Practical Augmented Lagrangian Methods [PDF]

, 2012
Ernesto G. Birgin, J. M. Martínez
openaire   +2 more sources

Partial symmetric regularized alternating direction method of multipliers for non-convex split feasibility problems

AIMS Mathematics
In this paper, we propose a kind of partial symmetric regularized alternating direction method of multipliers for solving non-convex split feasibility problems. This algorithm adds an update to the Lagrangian multiplier term during the iteration process.
Yue Zhao, Meixia Li, Xiaowei Pan, Jingjing Tan   +3 more
doaj   +1 more source

FairALM: Augmented Lagrangian Method for Training Fair Models with Little Regret. [PDF]

Comput Vis ECCV, 2020
Lokhande VS, Akash AK, Ravi SN, Singh V.
europepmc   +1 more source

Some New Developments in Contact Pressure Optimization

Engineering Transactions, 1995
Relatively few works have dealt with the optimization problems of bodies in contact. The present work is intended as a contribution to the determination of contact pressure distribution in the frame of linear elasticity. Solution of frictionless contact
I. Páczelt
doaj  

Symmetry harmonization: exploring deformed oscillators and dissipative dynamics through the glass of Newton–Hooke algebra

European Physical Journal C: Particles and Fields
Motivated by the symmetry in the non-relativistic limit of anti-de Sitter geometry, we employ planar dynamical models featuring exotic (deformed) harmonic oscillators, presented through direct and indirect Lagrangian representations.
Sayan Kumar Pal, Partha Nandi
doaj   +1 more source