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The mutation operator has been seldom improved because researchers hardly suspect its ability to prevent genetic algorithm
(GA) from converging prematurely. Due to its importance to GA, the authors of this paper study its influence on the diversity
of genes in the same locus, and point out that traditional mutation, to some extent, can result in premature convergence of
genes (PCG) in the same locus. The above drawback of the traditional mutation operator causes the loss of critical alleles.
Inspired by digital technique, we introduce two kinds of boolean operation into GA to develop a novel mutation operator and
discuss its contribution to preventing the loss of critical alleles. The experimental results of function optimization show
that the improved mutation operator can effectively prevent premature convergence, and can provide a wide selection range
of control parameters for GA. 相似文献
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杨启文 《中学历史教学参考》2000,(7)
课本第 41页 :“在国民党五中全会上 ,蒋介石说 ,他的‘抗战到底’的‘底’ ,就是‘要恢复“七·七”事变以前的原状’。这种表示 ,意味着可以放弃东北和华北的主权……”193 1年“九·一八”事变 ,由于蒋介石的不抵抗政策 ,致使东北三省全部沦亡 ,全国人民怒斥蒋介石的不抵抗政策 ,强烈要求停止内战、一致对外。面对社会舆论的强大压力 ,蒋介石又提出“攘外必先安内” ,继续推行向日本帝国主义妥协的政策 ,进一步助长了日寇的侵略气焰。日本帝国主义在侵占东北后 ,对华北又发动了新的侵略扩张 ,193 3年初日寇占领热河省 ,并对山海关等长城… 相似文献
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