| 遗传算法在估计瞬时单位线参数中的应用 |
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| 引用本文： | 董四辉,周惠成.遗传算法在估计瞬时单位线参数中的应用[J].大连铁道学院学报,2006,27(4):73-77. |
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| 作者姓名： | 董四辉 周惠成 |
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| 作者单位： | 大连交通大学环境与化学工程学院 辽宁大连116028(董四辉)，大连理工大学土木水利学院 辽宁大连116024(周惠成) |
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| 基金项目： | 国家自然科学基金项目（50479056） |
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| 摘 要： | 以m atlab为平台,应用遗传算法和m atlab工具箱中的统计函数,通过求解还原洪水过程与实测洪水过程之差绝对值的加权之和最小化问题来优化估计瞬时单位线的参数,避免了用近似公式法求解带来的方法误差.实例研究表明该方法是有效的,其精度明显高于矩法,也较近似公式法高.
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| 关 键 词： | 经验单位线 瞬时单位线 洪水预报 参数估计 遗传算法 |
| 文章编号： | 1000-1670（2006）04-0073-05 |
| 收稿时间： | 2006-01-09 |
Study of Estimating Instantaneous Unit Hydrograph Applying Genetic Algorithm |
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| DONG Si-hui, ZHOU Hui-cheng.Study of Estimating Instantaneous Unit Hydrograph Applying Genetic Algorithm[J].Journal of Dalian Railway Institute,2006,27(4):73-77. |
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| Authors: | DONG Si-hui ZHOU Hui-cheng |
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| Institution: | 1. School of Environment Science and Engineering, Dalian Jiaotong University, Dalian 116028, China; 2. School of Civil and Hydraulic, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | A new method of genetic algorithm based on matlab software is presented to optimize the parameters of instantaneous unit hydrograph.The statistical function gamcdf(x,A,B) in matlab toolbox is used to calculate S(t) curve,which avoids the errors caused by approximation method.The case study shows that this method is feasible,and the precision by using this method is higher than that by the method of moment. |
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| Keywords: | empirical unit hydrograph instantaneous unit hydrograph flood forecast parameter estimation genetic algorithm |
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