广西科技大学学报
廣西科技大學學報
엄서과기대학학보
Journal of Guangxi University of Science and Technology
2015年
3期
13-17,59
,共6页
覃柏英%秦文东%林贤坤
覃柏英%秦文東%林賢坤
담백영%진문동%림현곤
遗传算法%多峰函数%多种群%实数编码%函数优化
遺傳算法%多峰函數%多種群%實數編碼%函數優化
유전산법%다봉함수%다충군%실수편마%함수우화
Genetic Algorithm%Multimodal Function%Multiple population%Real Coding%Function Optimization
对于函数优化问题,单种群遗传算法全局搜索能力较强,但局部搜索能力较弱,当函数为多峰时,易陷入局部解。本文引入多种群实数编码遗传算法,不同种群赋予不同的控制参数,以此兼顾全局和局部搜索能力,并采用移民算子联系各种群实现协同进化,以及人工选择算子保存各种群的最优个体作为终止判据,从而较好搜索到多峰函数的全局最优解,并提高迭代寻优效率。
對于函數優化問題,單種群遺傳算法全跼搜索能力較彊,但跼部搜索能力較弱,噹函數為多峰時,易陷入跼部解。本文引入多種群實數編碼遺傳算法,不同種群賦予不同的控製參數,以此兼顧全跼和跼部搜索能力,併採用移民算子聯繫各種群實現協同進化,以及人工選擇算子保存各種群的最優箇體作為終止判據,從而較好搜索到多峰函數的全跼最優解,併提高迭代尋優效率。
대우함수우화문제,단충군유전산법전국수색능력교강,단국부수색능력교약,당함수위다봉시,역함입국부해。본문인입다충군실수편마유전산법,불동충군부여불동적공제삼수,이차겸고전국화국부수색능력,병채용이민산자련계각충군실현협동진화,이급인공선택산자보존각충군적최우개체작위종지판거,종이교호수색도다봉함수적전국최우해,병제고질대심우효솔。
The genetic algorithm has strong global searching ability, but its local searching ability is weak. This paper introduces multiple populations real coded genetic algorithm (MPRCGA) to optimize multimodal function. The different populations are endowed with different control parameters to guarantee both global and local search ability of MPRCGA. The immigration operator is used to contact multiple populations and realize co-evolution. The artificial selection operator is used to preserve the optimal individual as the criterion of termination in the evolution of multiple populations. The experimental results show that MPRCGA can not only solve the global minimum of the multimodal function, but also have high iterative optimization efficiency.