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Egret Swarm Optimization Algorithm: An Evolutionary Computation Approach for Model Free Optimization

Zuyan Chen, Adam Francis, Shuai Li Orcid Logo, Bolin Liao, Dunhui Xiao Orcid Logo, Tran Thu Ha, Jianfeng Li, Lei Ding Orcid Logo, Xinwei Cao

Biomimetics, Volume: 7, Issue: 4, Start page: 144

Swansea University Authors: Adam Francis, Shuai Li Orcid Logo, Dunhui Xiao Orcid Logo

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Abstract

A novel meta-heuristic algorithm named Egret Swarm Optimization Algorithm (ESOA) is proposed in this paper, which is inspired by two egret species’ hunting behavior (Great Egret and Snowy Egret). ESOA consists of three primary components: a sit-and-wait strategy, aggressive strategy as well as discr...

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Published in: Biomimetics
ISSN: 2313-7673
Published: MDPI AG 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa62232
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Abstract: A novel meta-heuristic algorithm named Egret Swarm Optimization Algorithm (ESOA) is proposed in this paper, which is inspired by two egret species’ hunting behavior (Great Egret and Snowy Egret). ESOA consists of three primary components: a sit-and-wait strategy, aggressive strategy as well as discriminant conditions. The learnable sit-and-wait strategy guides the egret to the most probable solution by applying a pseudo gradient estimator. The aggressive strategy uses random wandering and encirclement mechanisms to allow for optimal solution exploration. The discriminant model is utilized to balance the two strategies. The proposed approach provides a parallel framework and a strategy for parameter learning through historical information that can be adapted to most scenarios and has well stability. The performance of ESOA on 36 benchmark functions as well as 3 engineering problems are compared with Particle Swarm Optimization (PSO), Genetic Algorithm (GA), Differential Evolution (DE), Grey Wolf Optimizer (GWO), and Harris Hawks Optimization (HHO). The result proves the superior effectiveness and robustness of ESOA. ESOA acquires the winner in all unimodal functions and reaches statistic scores all above 9.9, while the scores are better in complex functions as 10.96 and 11.92.
Keywords: metaheuristic algorithm; swarm intelligence; egret swarm optimization algorithm; constrained optimization
College: Faculty of Science and Engineering
Funders: This research received no external funding.
Issue: 4
Start Page: 144