Results 1 to 10 of about 1,503,716 (266)

Metaheuristics and large‐scale optimization

open access: yesTechnological and Economic Development of Economy, 2006
„Metaheuristics and large‐scale optimization" Technological and Economic Development of Economy, 12(1), p.
Leonidas Sakalauskas
doaj   +6 more sources

Large-Scale Portfolio Optimization Using Biogeography-Based Optimization

open access: yesInternational Journal of Financial Studies, 2023
Portfolio optimization is a mathematical formulation whose objective is to maximize returns while minimizing risks. A great deal of improvement in portfolio optimization models has been made, including the addition of practical constraints. As the number
Wendy Wijaya, Kuntjoro Adji Sidarto
doaj   +2 more sources

Dynamic Factorization in Large-Scale Optimization [PDF]

open access: yesMathematical Programming, 1992
Mathematical Programming, 64, pp. 17-51.Factorization of linear programming (LP) models enables a large portion of the LP tableau to be represented implicitly and generated from the remaining explicit part. Dynamic factorization admits algebraic elements
Brown, Gerald G., Olson, Michael
core   +6 more sources

Spectral proximal method for solving large scale sparse optimization [PDF]

open access: yesITM Web of Conferences, 2021
In this paper, we propose to use spectral proximal method to solve sparse optimization problems. Sparse optimization refers to an optimization problem involving the ι0 -norm in objective or constraints.
Woo Gillian Yi Han   +3 more
doaj   +1 more source

Evolutionary Advantages of Stimulus-Driven EEG Phase Transitions in the Upper Cortical Layers

open access: yesFrontiers in Systems Neuroscience, 2021
Spatio-temporal brain activity monitored by EEG recordings in humans and other mammals has identified beta/gamma oscillations (20–80 Hz), which are self-organized into spatio-temporal structures recurring at theta/alpha rates (4–12 Hz).
Robert Kozma   +3 more
doaj   +1 more source

Enriched Algorithms for Large Scale Unconstrained Optimization [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2007
A new method for solving Large-Scale problems in the unconstrained optimization has been proposed in this research depending on the BFGS method. The limited memory is used in the BFGS method by multiplying the BFGS matrix by a vector to obtain vectors ...
Abbas Al-Bayati, Omar Mohammad
doaj   +1 more source

Dynamical Sphere Regrouping Particle Swarm Optimization: A Proposed Algorithm for Dealing with PSO Premature Convergence in Large-Scale Global Optimization

open access: yesMathematics, 2023
Optimizing large-scale numerical problems is a significant challenge with numerous real-world applications. The optimization process is complex due to the multi-dimensional search spaces and possesses several locally optimal regions.
Martín Montes Rivera   +3 more
doaj   +1 more source

New Hybrid Quasi-Newton Algorithms for Large Scale Optimization [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2009
Two new hybrid algorithms have been suggested in this paper, the first one utilizes four formula of self-scaling update matrix was used. The matrix is selected according to Buckley method in each step.
Abbas Al-Bayati, Sawsan Ismail
doaj   +1 more source

Spread-based elite opposite swarm optimizer for large scale optimization

open access: yesCognitive Robotics, 2022
To prevent the traditional particle swarm optimizer (PSO) from inefficient search in complex problem spaces, this paper presents a novel spread-based elite opposite swarm optimizer (SEOSO) for large scale optimization.
Li Zhang, Yu Tan
doaj   +1 more source

Evolutionary multiobjective optimization via efficient sampling-based offspring generation

open access: yesComplex & Intelligent Systems, 2023
With the rising number of large-scale multiobjective optimization problems from academia and industries, some evolutionary algorithms (EAs) with different decision variable handling strategies have been proposed in recent years. They mainly emphasize the
Cheng He   +3 more
doaj   +1 more source

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