Results 11 to 20 of about 146 (138)

Modified nonlinear conjugate gradient method with sufficient descent condition for unconstrained optimization [PDF]

open access: yesJournal of Inequalities and Applications, 2011
In this paper, an efficient modified nonlinear conjugate gradient method for solving unconstrained optimization problems is proposed. An attractive property of the modified method is that the generated direction in each step is always descending without ...
Liu Jinkui, Wang Shaoheng
doaj   +2 more sources

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

Nature–inspired metaheuristic algorithms to find near–OGR sequences for WDM channel allocation and their performance comparison

open access: yesOpen Mathematics, 2017
Nowadays, nature–inspired metaheuristic algorithms are most powerful optimizing algorithms for solving the NP–complete problems. This paper proposes three approaches to find near–optimal Golomb ruler sequences based on nature–inspired algorithms in a ...
Bansal Shonak   +2 more
doaj   +1 more source

A Survey on Mixed-Integer Programming Techniques in Bilevel Optimization

open access: yesEURO Journal on Computational Optimization, 2021
Bilevel optimization is a field of mathematical programming in which some variables are constrained to be the solution of another optimization problem. As a consequence, bilevel optimization is able to model hierarchical decision processes.
Thomas Kleinert   +3 more
doaj   +1 more source

Characterizations of Benson proper efficiency of set-valued optimization in real linear spaces

open access: yesOpen Mathematics, 2019
A new class of generalized convex set-valued maps termed relatively solid generalized cone-subconvexlike maps is introduced in real linear spaces not equipped with any topology.
Liang Hongwei, Wan Zhongping
doaj   +1 more source

Joint location and pricing within a user-optimized environment

open access: yesEURO Journal on Computational Optimization, 2020
In the design of service facilities, whenever the behaviour of customers is impacted by queueing or congestion, the resulting equilibrium cannot be ignored by a firm that strives to maximize revenue within a competitive environment.
Teodora Dan   +2 more
doaj   +1 more source

Portfolio selection under downside risk measures and cardinality constraints based on DC programming and DCA

open access: yes, 2009
Portfolio selection, Downside risk, DC programming, DCA, Branch-and-Bound, 90C11, 90C26, 91B28,
Moeini, Mahdi   +5 more
core   +1 more source

Alternative SDP and SOCP approximations for polynomial optimization

open access: yesEURO Journal on Computational Optimization, 2019
In theory, hierarchies of semidefinite programming (SDP) relaxations based on sum of squares (SOS) polynomials have been shown to provide arbitrarily close approximations for a general polynomial optimization problem (POP).
Xiaolong Kuang   +3 more
doaj   +1 more source

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