Results 11 to 20 of about 62,722 (247)

ZOOpt: a toolbox for derivative-free optimization

open access: yesScience China Information Sciences, 2022
SCIENCE CHINA Information Sciences, 2022.
Liu, Yu-Ren   +4 more
openaire   +2 more sources

Hybridization of Multi-Objective Deterministic Particle Swarm with Derivative-Free Local Searches

open access: yesMathematics, 2020
The paper presents a multi-objective derivative-free and deterministic global/local hybrid algorithm for the efficient and effective solution of simulation-based design optimization (SBDO) problems.
Riccardo Pellegrini   +5 more
doaj   +1 more source

Two decades of blackbox optimization applications

open access: yesEURO Journal on Computational Optimization, 2021
This article reviews blackbox optimization applications of direct search optimization methods over the past twenty years. Emphasis is placed on the Mesh Adaptive Direct Search (Mads) derivative-free optimization algorithm.
Stéphane Alarie   +4 more
doaj   +1 more source

On the implementation of a global optimization method for mixed-variable problems

open access: yesOpen Journal of Mathematical Optimization, 2021
We describe the optimization algorithm implemented in the open-source derivative-free solver RBFOpt. The algorithm is based on the radial basis function method of Gutmann and the metric stochastic response surface method of Regis and Shoemaker.
Nannicini, Giacomo
doaj   +1 more source

Experimental Study of Excessive Local Refinement Reduction Techniques for Global Optimization DIRECT-Type Algorithms

open access: yesMathematics, 2022
This article considers a box-constrained global optimization problem for Lipschitz continuous functions with an unknown Lipschitz constant. The well-known derivative-free global search algorithm DIRECT (DIvide RECTangle) is a promising approach for such ...
Linas Stripinis, Remigijus Paulavičius
doaj   +1 more source

Derivative-free optimization for optical chirality enhancement [PDF]

open access: yesEPJ Web of Conferences
We adopt a multi-objective optimization approach to design one-dimensional photonic crystals with large optical chirality enhancements. We show that this technique allows for a large design flexibility in terms of selected materials and operational ...
Pellegrini Giovanni   +5 more
doaj   +1 more source

A class of derivative-free trust-region methods with interior backtracking technique for nonlinear optimization problems subject to linear inequality constraints

open access: yesJournal of Inequalities and Applications, 2018
This paper focuses on a class of nonlinear optimization subject to linear inequality constraints with unavailable-derivative objective functions. We propose a derivative-free trust-region methods with interior backtracking technique for this optimization.
Jing Gao, Jian Cao
doaj   +1 more source

A fire spread simulator to support tactical management decisions for Mediterranean landscapes

open access: yesFrontiers in Forests and Global Change, 2023
The use of fire simulation tools has become a regular feature of support systems for fuel management decisions at landscape level. Considering the spatial nature of fire in the evaluation of risk and the definition of fire mitigation goals is an ongoing ...
Jose Ramon Gonzalez-Olabarria   +12 more
doaj   +1 more source

A Framework for Stochastic Optimization of Parameters for Integrative Modeling of Macromolecular Assemblies

open access: yesLife, 2021
Integrative modeling of macromolecular assemblies requires stochastic sampling, for example, via MCMC (Markov Chain Monte Carlo), since exhaustively enumerating all structural degrees of freedom is infeasible.
Satwik Pasani, Shruthi Viswanath
doaj   +1 more source

Randomized Simplicial Hessian Update

open access: yesMathematics, 2021
Recently, a derivative-free optimization algorithm was proposed that utilizes a minimum Frobenius norm (MFN) Hessian update for estimating the second derivative information, which in turn is used for accelerating the search.
Árpád Bűrmen   +2 more
doaj   +1 more source

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