Objective penalty function method for nonlinear programming with inequality constraints

This paper presents a novel nonsmooth objective penalty function for inequality constrained optimization problems. A modified flattened aggregate function, which is a smooth approximation of the max-value function, is discussed. Then, the smooth objective penalty function that contains the flattened...

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Main Authors: Zhuolin Yan, Xiaowei Jiang, Siyao Wang
Format: Article
Language:English
Published: AIMS Press 2024-11-01
Series:AIMS Mathematics
Subjects:
Online Access:https://www.aimspress.com/article/doi/10.3934/math.20241602
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author Zhuolin Yan
Xiaowei Jiang
Siyao Wang
author_facet Zhuolin Yan
Xiaowei Jiang
Siyao Wang
author_sort Zhuolin Yan
collection DOAJ
description This paper presents a novel nonsmooth objective penalty function for inequality constrained optimization problems. A modified flattened aggregate function, which is a smooth approximation of the max-value function, is discussed. Then, the smooth objective penalty function that contains the flattened aggregate function is proposed, and the exactness of the new function is studied. Based on this, an objective penalty function algorithm is proposed and its convergence is proven under mild conditions. Because of the flattened aggregate function, the gradient computation can usually be greatly reduced for problems with many constraints. Numerical experiments are included to illustrate the efficiency of the new algorithm through a series of numerical examples, especially for solving problems with many constraints.
format Article
id doaj-art-6a4af6329eec4db5b6230829b2520632
institution Kabale University
issn 2473-6988
language English
publishDate 2024-11-01
publisher AIMS Press
record_format Article
series AIMS Mathematics
spelling doaj-art-6a4af6329eec4db5b6230829b25206322025-01-23T07:53:24ZengAIMS PressAIMS Mathematics2473-69882024-11-01912335723359010.3934/math.20241602Objective penalty function method for nonlinear programming with inequality constraintsZhuolin Yan0Xiaowei Jiang1Siyao Wang2School of Mathematics and Statistics, Beihua University, Jilin, Jilin, 132013, ChinaSchool of Mathematics and Statistics, Beihua University, Jilin, Jilin, 132013, ChinaSchool of Mathematics and Statistics, Beihua University, Jilin, Jilin, 132013, ChinaThis paper presents a novel nonsmooth objective penalty function for inequality constrained optimization problems. A modified flattened aggregate function, which is a smooth approximation of the max-value function, is discussed. Then, the smooth objective penalty function that contains the flattened aggregate function is proposed, and the exactness of the new function is studied. Based on this, an objective penalty function algorithm is proposed and its convergence is proven under mild conditions. Because of the flattened aggregate function, the gradient computation can usually be greatly reduced for problems with many constraints. Numerical experiments are included to illustrate the efficiency of the new algorithm through a series of numerical examples, especially for solving problems with many constraints.https://www.aimspress.com/article/doi/10.3934/math.20241602nonlinear programminginequality constraintexact penalty functionobjective penalty functionflattened aggregate function
spellingShingle Zhuolin Yan
Xiaowei Jiang
Siyao Wang
Objective penalty function method for nonlinear programming with inequality constraints
AIMS Mathematics
nonlinear programming
inequality constraint
exact penalty function
objective penalty function
flattened aggregate function
title Objective penalty function method for nonlinear programming with inequality constraints
title_full Objective penalty function method for nonlinear programming with inequality constraints
title_fullStr Objective penalty function method for nonlinear programming with inequality constraints
title_full_unstemmed Objective penalty function method for nonlinear programming with inequality constraints
title_short Objective penalty function method for nonlinear programming with inequality constraints
title_sort objective penalty function method for nonlinear programming with inequality constraints
topic nonlinear programming
inequality constraint
exact penalty function
objective penalty function
flattened aggregate function
url https://www.aimspress.com/article/doi/10.3934/math.20241602
work_keys_str_mv AT zhuolinyan objectivepenaltyfunctionmethodfornonlinearprogrammingwithinequalityconstraints
AT xiaoweijiang objectivepenaltyfunctionmethodfornonlinearprogrammingwithinequalityconstraints
AT siyaowang objectivepenaltyfunctionmethodfornonlinearprogrammingwithinequalityconstraints