Results 21 to 30 of about 45,742 (207)

Augmented Lagrangian optimization under fixed-point arithmetic [PDF]

open access: yesAutomatica, 2020
In this paper, we propose an inexact Augmented Lagrangian Method (ALM) for the optimization of convex and nonsmooth objective functions subject to linear equality constraints and box constraints where errors are due to fixed-point data. To prevent data overflow we also introduce a projection operation in the multiplier update.
Zhang, Yan, Zavlanos, Michael M.
openaire   +3 more sources

Finite Element Solutions of Cantilever and Fixed Actuator Beams Using Augmented Lagrangian Methods [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2018
In this paper we develop a numerical procedure using finite element and augmented Lagrangian meth-ods that simulates electro-mechanical pull-in states of both cantilever and fixed beams in microelectromechanical systems (MEMS) switches.
Dongming Wei, Xuefeng Li
doaj   +1 more source

A Distributed Asynchronous Method of Multipliers for Constrained Nonconvex Optimization [PDF]

open access: yes, 2018
This paper presents a fully asynchronous and distributed approach for tackling optimization problems in which both the objective function and the constraints may be nonconvex.
Farina, Francesco   +3 more
core   +3 more sources

Adaptive inexact fast augmented Lagrangian methods for constrained convex optimization [PDF]

open access: yes, 2015
In this paper we analyze several inexact fast augmented Lagrangian methods for solving linearly constrained convex optimization problems. Mainly, our methods rely on the combination of excessive-gap-like smoothing technique developed in [15] and the ...
Necoara, Ion   +2 more
core   +3 more sources

An Augmented Lagrangian Model for Signal Segmentation

open access: yesMediterranean Journal of Mathematics, 2022
AbstractIn this paper, we provide a new insight to the two-phase signal segmentation problem. We propose an augmented Lagrangian variational model based on Chan–Vese’s original one. Using both energy methods and PDE methods, we show, in the one-dimensional case, that the set of minimizers to the proposed functional contains only binary functions and it
Salvador Moll, Vicent Pallardó
openaire   +2 more sources

Pareto front approximation through a multi-objective augmented Lagrangian method

open access: yesEURO Journal on Computational Optimization, 2021
In this manuscript, we consider smooth multi-objective optimization problems with convex constraints. We propose an extension of a multi-objective augmented Lagrangian Method from recent literature.
Guido Cocchi   +2 more
doaj   +1 more source

Augmented Lagrangian Algorithm for Hydrothermal Scheduling

open access: yesEAI Endorsed Transactions on Energy Web, 2018
This paper mainly deals with a new algorithm for solving hydrothermal scheduling problem with transmission and environmental constraints using Augmented Lagrangian(AL) method.
R. Subramani, C. Vijayalakshmi
doaj   +1 more source

A New Augmented Lagrangian Method for Equality Constrained Optimization with Simple Unconstrained Subproblem

open access: yesDiscrete Dynamics in Nature and Society, 2017
We propose a new method for equality constrained optimization based on augmented Lagrangian method. We construct an unconstrained subproblem by adding an adaptive quadratic term to the quadratic model of augmented Lagrangian function.
Hao Zhang, Qin Ni
doaj   +1 more source

Finite type invariants of rational homology 3-spheres [PDF]

open access: yes, 2012
We consider the rational vector space generated by all rational homology spheres up to orientation-preserving homeomorphism, and the filtration defined on this space by Lagrangian-preserving rational homology handlebody replacements.
Delphine Moussard   +3 more
core   +3 more sources

Bayesian augmented Lagrangian algorithm for system identification [PDF]

open access: yesSystems & Control Letters, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaoquan Tang, Long Zhang, Xiuting Li
openaire   +2 more sources

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