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峰度驱动的云进化策略

, PP. 205-212

Keywords: 进化策略,云模型,峰度,参数演化

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Abstract:

为了从传统进化策略的角度分析并改进云进化策略,研究云分布的峰度统计量及其应用。云分布在固定标准差时,也可通过调整峰度来改变噪声形状,可能产生更有效的变异。推导云分布峰度计算公式,以支持熵-超熵空间和标准差-峰度空间的相互转换。比较峰度和峰比对云分布噪声的影响,证明峰度更适宜自适应演化。给出峰度驱动的云进化策略,它的参数演化结合基于1/5规则的标准差演化和自适应峰度演化。对8个测试函数的实验结果显示,高峰度利于全局寻优,低峰度利于局部寻优,而峰度的自适应调整可综合二者优势。

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