【摘要】 针对信息扩散估计的过扩散和欠扩散问题,在分析择近窗宽法和最优窗宽法的基础上,结合二者的优点,提出了一种确定扩散窗宽的多目标综合优化方法.经对2χ分布和F分布的检验表明,该方法能较好地逼近理论分布曲线.应用该法对黄河干流龙门站年最大流量的洪水风险进行分析,得到了最大流量概率密度分布函数以及不同重现期的估计值,为维持黄河的健康提供了较为客观的依据.更多还原

【Abstract】 Aim at the overdiffuse and subdiffuse of information diffuse estimation,a multi-subject integrated optimization was given to determine diffused window width based on analyzing closest window width means and optimal window width means.By testing χ2 and F distribution of data,it was proved that the method had a better approach to theoretical distribution curve than above two methods.To research its effect in flood risk analysis,the maximum discharge was took at Longmen station in the main stream of the yellow river as an example,and probability density distribution function of maximum discharge and the estimated value of different recurrence intervals were obtained.They could be used as the more objective data to protect the yellow river health.更多还原