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遗传算法拟合变异函数的参数 被引量:8
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作者 阮永芬 黄兴周 +1 位作者 李仕胜 赵华 《云南大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第2期140-145,共6页
由于堆积体的空间变异特殊性,用加权多项式回归法进行球状模型的理论变异函数拟合误差很大,有时甚至无法拟合出变异函数.为解决这一问题,结合遗传算法原理,充分利用遗传算法在求解非线性问题时具有全局寻优的特点,拟合出球状模型的理论... 由于堆积体的空间变异特殊性,用加权多项式回归法进行球状模型的理论变异函数拟合误差很大,有时甚至无法拟合出变异函数.为解决这一问题,结合遗传算法原理,充分利用遗传算法在求解非线性问题时具有全局寻优的特点,拟合出球状模型的理论变异函数参数,并以小湾水电站左岸堆积体边坡的变形监测数据为例进行了计算.经过多方法对实例进行比较分析表明,该方法简便、通用,具有较高的拟合精度,是非线性、不连续可微模型参数估计的好方法. 展开更多
关键词 变异函数 参数估计 遗传算法拟合
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An extended discrete particle swarm optimization algorithm for the dynamic facility layout problem 被引量:3
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作者 Hassan REZAZADEH Mehdi GHAZANFARI +1 位作者 Mohammad SAIDI-MEHRABAD Seyed JAFAR SADJADI 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2009年第4期520-529,共10页
We extended an improved version of the discrete particle swarm optimization (DPSO) algorithm proposed by Liao et al.(2007) to solve the dynamic facility layout problem (DFLP). A computational study was performed with ... We extended an improved version of the discrete particle swarm optimization (DPSO) algorithm proposed by Liao et al.(2007) to solve the dynamic facility layout problem (DFLP). A computational study was performed with the existing heuristic algorithms, including the dynamic programming (DP), genetic algorithm (GA), simulated annealing (SA), hybrid ant system (HAS), hybrid simulated annealing (SA-EG), hybrid genetic algorithms (NLGA and CONGA). The proposed DPSO algorithm, SA, HAS, GA, DP, SA-EG, NLGA, and CONGA obtained the best solutions for 33, 24, 20, 10, 12, 20, 5, and 2 of the 48 problems from (Balakrishnan and Cheng, 2000), respectively. These results show that the DPSO is very effective in dealing with the DFLP. The extended DPSO also has very good computational efficiency when the problem size increases. 展开更多
关键词 Dynamic facility layout problem (DFLP) Particle swarm optimization (PSO) OPTIMIZATION Heuristic method
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