基于改进差分进化算法的水文模型参数多目标优选研究  

Study on modified multi-objective differential evolution algorithm for parameter optimization of hydrologic model

作　　者：曹飞凤[1] 许月萍[2] 

机构地区：[1]浙江工业大学建筑工程学院港口航道与海岸工程系,杭州310014 [2]浙江大学建筑工程学院水文与水资源工程研究所,杭州310058

出　　处：《系统工程理论与实践》2014年第12期3268-3273,共6页Systems Engineering-Theory & Practice

基　　金：国家自然科学基金(50809058);教育部博士点基金项目(200803351029)

摘　　要：在差分进化算法的基础上,受马尔可夫链蒙特卡罗方法的启发,建立了differential evolution adaptive metropolis(DREAM)算法.DREAM算法融合了马尔可夫链蒙特卡罗方法和差分进化算法的优势,较好地解决了马尔可夫链蒙特卡罗方法中搜索步长的恰当取值以及搜索方向的准确定位问题,并能有效解决差分进化算法的群体多样性和收敛速度问题.在DREAM算法基础上,引入多目标优化思想,提出了一种基于改进适应度分配策略和外部存档方案的多目标DREAM算法,并应用于岷江流域CMD-3PAR降雨-径流模型参数优选研究.结果表明:多目标DREAM算法能够找到一组范围宽广、分布均匀且数量充足的Pareto最优解供决策者评价优选.A novel differential evolution adaptive metropolis algorithm （DREAM） is presented, which combines the advantages of differential evolution algorithm and Markov chain Monte Carlo （MCMC） sam- pler. DREAM solves an important problem in MCMC, namely that of choosing an appropriate scale and orientation for the jumping distribution. Meanwhile, it can make a good trade-off between population diversity and convergence for differential evolution algorithm. Moreover, multi-objective DREAM is pro- posed based on the modified fitness assignment and external archive strategy, which is applied in parameter optimizaVion of CMD-3PAR hydrologic model in the Min River Basin. The results show that DREAM is capable to infer the posterior distribution of model parameters, and multi-objective differential evolution adaptive metropolis （MODREAM） is capable to generate a lot of non-dominated solutions with wide and uniform distribution for decision-makers.

关 键 词：差分进化算法 马尔可夫链蒙特卡罗方法 参数优选 适应度 多目标differential evolutionadaptive metropolis算法 

分 类 号：TV124[水利工程—水文学及水资源] P334[天文地球—水文科学]