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Self Balanced Differential Evolution
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DOI：10.1016/j.jocs.2012.12.002.png)
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Differential Evolution (DE) is a well known and simple population based probabilistic approach for global optimization. It has reportedly outperformed a few Evolutionary Algorithms (EAs) and other search heuristics like the Particle Swarm Optimization (PSO) when tested over both benchmark and real world problems. But, DE, like other probabilistic optimization algorithms, sometimes behave prematurely in convergence. Therefore, in order to avoid stagnation while keeping a good convergence speed for DE, two modifications are proposed: one is the introduction of a new control parameter, Cognitive Learning Factor (CLF) and the other is dynamic setting of scale factor. Both modifications are proposed in mutation process of DE. Cognitive learning is a powerful mechanism that adjust the current position of individuals by a means of some specified knowledge. The proposed strategy, named as Self Balanced Differential Evolution (SBDE), balances the exploration and exploitation capability of the DE. To prove efficiency and efficacy of SBDE, it is tested over 30 benchmark optimization problems and compared the results with the basic DE and advanced variants of DE namely, SFLSDE, OBOE and jDE. Further, a real-world optimization problem, namely, Spread Spectrum Radar Polly phase Code Design, is solved to show the wide applicability of the SBDE. (C) 2012 Elsevier B.V. All rights reserved.
Keyword:
Evolutionary optimization
Differential Evolution
Cognitive Learning Factor
Meta-heuristics
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18.3
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3.1K
被引数:
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