Results 1 to 10 of about 67 (66)

The exactness of the ℓ1 penalty function for a class of mathematical programs with generalized complementarity constraints [PDF]

open access: yesFundamental Research
In a mathematical program with generalized complementarity constraints (MPGCC), complementarity relation is imposed between each pair of variable blocks.
Yukuan Hu, Xin Liu
doaj   +2 more sources

An improved Jaya optimization algorithm with ring topology and population size reduction

open access: yesJournal of Intelligent Systems, 2022
An improved variant of the Jaya optimization algorithm, called Jaya2, is proposed to enhance the performance of the original Jaya sacrificing its algorithmic design. The proposed approach arranges the solutions in a ring topology to reduce the likelihood
Omran Mahamed G. H., Iacca Giovanni
doaj   +1 more source

A new conjugate gradient method for acceleration of gradient descent algorithms

open access: yesMoroccan Journal of Pure and Applied Analysis, 2021
An accelerated of the steepest descent method for solving unconstrained optimization problems is presented. which propose a fundamentally different conjugate gradient method, in which the well-known parameter βk is computed by an new formula.
Rahali Noureddine   +2 more
doaj   +1 more source

Modified spectral conjugate gradient iterative scheme for unconstrained optimization problems with application on COVID-19 model

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
In this work, a new class of spectral conjugate gradient (CG) method is proposed for solving unconstrained optimization models. The search direction of the new method uses the ZPRP and JYJLL CG coefficients.
Fevi Novkaniza   +3 more
doaj   +1 more source

Characterizations of the Solution Sets of Generalized Convex Fuzzy Optimization Problem

open access: yesOpen Mathematics, 2019
This paper provides some new characterizations of the solution sets for non-differentiable generalized convex fuzzy optimization problem. Firstly, we introduce some new generalized convex fuzzy functions and discuss the relationships among them. Secondly,
Chen Wang, Zhou Zhiang
doaj   +1 more source

Outcome space range reduction method for global optimization of sum of affine ratios problem

open access: yesOpen Mathematics, 2016
Many algorithms for globally solving sum of affine ratios problem (SAR) are based on equivalent problem and branch-and-bound framework. Since the exhaustiveness of branching rule leads to a significant increase in the computational burden for solving the
Jiao Hongwei   +3 more
doaj   +1 more source

A reduced space branch and bound algorithm for a class of sum of ratios problems

open access: yesOpen Mathematics, 2018
Sum of ratios problem occurs frequently in various areas of engineering practice and management science, but most solution methods for this kind of problem are often designed for determining local solutions .
Zhao Yingfeng, Zhao Ting
doaj   +1 more source

Global resolution of the support vector machine regression parameters selection problem with LPCC

open access: yesEURO Journal on Computational Optimization, 2015
Support vector machine regression is a robust data fitting method to minimize the sum of deducted residuals of regression, and thus is less sensitive to changes of data near the regression hyperplane. Two design parameters, the insensitive tube size (εe)
Yu-Ching Lee   +2 more
doaj   +1 more source

Branch-delete-bound algorithm for globally solving quadratically constrained quadratic programs

open access: yesOpen Mathematics, 2017
This paper presents a branch-delete-bound algorithm for effectively solving the global minimum of quadratically constrained quadratic programs problem, which may be nonconvex.
Hou Zhisong   +3 more
doaj   +1 more source

Presolving linear bilevel optimization problems

open access: yesEURO Journal on Computational Optimization, 2021
Linear bilevel optimization problems are known to be strongly NP-hard and the computational techniques to solve these problems are often motivated by techniques from single-level mixed-integer optimization.
Thomas Kleinert   +3 more
doaj   +1 more source

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