Journal
SWARM AND EVOLUTIONARY COMPUTATION
Volume 40, Issue -, Pages 24-36Publisher
ELSEVIER
DOI: 10.1016/j.swevo.2017.12.001
Keywords
Imperialistic competitive algorithm; Design optimization; Metaheuristic optimization algorithms; Steel frames
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An Enhanced Imperialist Competitive Algorithm (EICA) is proposed aimed at enabling the ICA algorithm to escape from local optima faster, thus enabling faster convergence of the basic ICA algorithm. To this end, the imperialistic competition phase of the algorithm is enhanced by giving added value to a slightly unfeasible solution, based on its distance from the relative imperialist. The performance of the proposed EICA algorithm is investigated through design optimizations of four benchmark side-sway frames. Results indicate that, in terms of both the design quality and the solution speed, EICA compares significantly favourable with a number of other meta heuristic optimizers, including the basic ICA.
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