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基于SEIRS传染病模型的函数优化方法——SEIRS算法
  • 摘要

    为了解决复杂函数优化问题,采用SEIRS传染病模型提出了SEIRS算法.在该算法中,假设某个生态系统由若干人类个体组成,每个个体均由若干个特征来表征.该生态系统存在一种传染病在个体之间传染,该传染病攻击的是个体的部分特征.每个染病个体均经历易感、潜伏、发病和治愈等阶段,这些阶段的综合作用决定了个体的体质强弱;利用SEIRS传染病模型所描述的疾病传播机理构造出了相关算子,使个体之间能充分交换信息.结果表明:E-E,I-I和R-R算子能使体质强壮的个体向体质弱的个体传递强壮特征信息,使得后者能向好的方向发展;S-E,S-R,E-I(ω)和R-S(ω)算子能使处于不同状态的个体获得其他个体的平均特征信息,从而降低了该个体陷入局部最优解的概率;S-S算子能使个体的活跃度提高,从而扩大其搜索范围;E-R和I-R算子既具有S-S算子的特征又具有S-E,S-R,E I(ω)和R-S(ω)算子的特征.体质强壮的个体能继续生长,而体质虚弱的个体则停止生长,从而确保本算法具有全局收敛性.测试结果表明:本算法具有搜索能力强的特点,对求解复杂函数优化问题具有很高的收敛速度.

  • 作者

    黄光球  孙思雅  陆秋琴  Huang Guangqiu  Sun Siya  Lu Qiuqin 

  • 作者单位

    西安建筑科技大学管理学院 西安 710055

  • 刊期

    2014年12期 ISTIC EI PKU

  • 关键词

    函数优化  智能优化计算  传染病动力学  SEIRS传染病模型  SEIRS算法  function optimization  population-based intelligent optimization computation  epidemic dynamics  SEIRS epidemic model  SEIRS algorithm 

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