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中文摘要：
参数率定是进行水位流量关系曲线拟合的关键，采用水位流量关系拟合的改进模型，运用遗传算法率定模型中的参数，并与目标规划法进行了比较，表明遗传算法具有简便、快速、实用性强等优点，是一种较为优秀的全局优化方法，适应于非线性的参数率定．
英文摘要：
Determination of parameters is important for study on stage-discharge relation. Genetic Algorithm is applied in evaluation of parameters of improved stage-discharge model, and also the comparison is made with the fitting results by goal programming. The results indicate that the genetic algorithm is characterized by simplicity, quickly and practicality, which is an excellent and global optimization method and also adapts to parameter rating of non-linear relationship.
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