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Comparing the efficiency of some modifications of the evolutionary strategy algorithm

Authors: Kozov A.V.
Published in issue: #5(22)/2018
DOI: 10.18698/2541-8009-2018-5-309


Category: Mathematics | Chapter: Computational Mathematics

Keywords: efficiency comparison, unconstrained optimization, global optimization, population algorithm, evolutionary algorithm, coevolutionary algorithm, evolutionary strategy
Published: 07.05.2018

The article introduces the results of comparing the efficiency of the stochastic global optimization searching methods and considers some well-known modifications of the evolutionary strategy algorithm. We describe a basic algorithm and its modifications: (α + β)-algorithm, (α+ β)-algorithm with the mutation width parameter self-adapting, αβ-algorithm, αβ-algorithm with the mutation width parameter self-adapting, coevolutionary algorithm. The article examines the efficiency of the mentioned modifications on the Rosenbrock one-extremum ravine function and Rastrigin multiextremal function. Efficiency comparison has been conducted according to such parameters as the achieved value of the objective function, the probability of the global extremum localization and the number of the required tests. The results of the investigation can be used when choosing the most efficient optimization algorithm.


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