Open Access
ARTICLE
Enhanced Harris Hawks Optimization Integrated with Coot Bird Optimization for Solving Continuous Numerical Optimization Problems
Hao Cui, Yanling Guo*, Yaning Xiao, Yangwei Wang*, Jian Li, Yapeng Zhang, Haoyu Zhang
College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, 150040, China
* Corresponding Authors: Yanling Guo. Email: ; Yangwei Wang. Email:
(This article belongs to the Special Issue: Bio-inspired Computer Modelling: Theories and Applications in Engineering and Sciences)
Computer Modeling in Engineering & Sciences 2023, 137(2), 1635-1675. https://doi.org/10.32604/cmes.2023.026019
Received 10 August 2022; Accepted 30 January 2023; Issue published 26 June 2023
Abstract
Harris Hawks Optimization (HHO) is a novel meta-heuristic algorithm that imitates the predation characteristics
of Harris Hawk and combines Lévy flight to solve complex multidimensional problems. Nevertheless, the basic
HHO algorithm still has certain limitations, including the tendency to fall into the local optima and poor
convergence accuracy. Coot Bird Optimization (CBO) is another new swarm-based optimization algorithm. CBO
originates from the regular and irregular motion of a bird called Coot on the water’s surface. Although the
framework of CBO is slightly complicated, it has outstanding exploration potential and excellent capability to
avoid falling into local optimal solutions. This paper proposes a novel enhanced hybrid algorithm based on the
basic HHO and CBO named Enhanced Harris Hawks Optimization Integrated with Coot Bird Optimization
(EHHOCBO). EHHOCBO can provide higher-quality solutions for numerical optimization problems. It first
embeds the leadership mechanism of CBO into the population initialization process of HHO. This way can
take full advantage of the valuable solution information to provide a good foundation for the global search of
the hybrid algorithm. Secondly, the Ensemble Mutation Strategy (EMS) is introduced to generate the mutant
candidate positions for consideration, further improving the hybrid algorithm’s exploration trend and population
diversity. To further reduce the likelihood of falling into the local optima and speed up the convergence, Refracted
Opposition-Based Learning (ROBL) is adopted to update the current optimal solution in the swarm. Using 23
classical benchmark functions and the IEEE CEC2017 test suite, the performance of the proposed EHHOCBO
is comprehensively evaluated and compared with eight other basic meta-heuristic algorithms and six improved
variants. Experimental results show that EHHOCBO can achieve better solution accuracy, faster convergence
speed, and a more robust ability to jump out of local optima than other advanced optimizers in most test cases.
Finally, EHHOCBO is applied to address four engineering design problems. Our findings indicate that the proposed
method also provides satisfactory performance regarding the convergence accuracy of the optimal global solution.
Graphical Abstract
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Cite This Article
Cui, H., Guo, Y., Xiao, Y., Wang, Y., Li, J. et al. (2023). Enhanced Harris Hawks Optimization Integrated with Coot Bird Optimization for Solving Continuous Numerical Optimization Problems.
CMES-Computer Modeling in Engineering & Sciences, 137(2), 1635–1675. https://doi.org/10.32604/cmes.2023.026019