节点文献
Copula函数在水文计算中的适用性分析
Applicability Analysis of Copula Function in Hydrological Estimation
【摘要】 论述和探讨了Copula函数在水文计算中的应用及适用性,重点分析了常用的Archimedean CopuIa函数在描述水文变量尾部相关性方面的差异,以及相关系数的不确定性对各Copula函数分析结果的影响,讨论了Copula函数在相关性分析中出现的其他问题及注意事项.
【Abstract】 The application and applicability of Copula function in hydrological estimation were reviewed and discussed.The tail dependence of Archimedean Copula function and impact of correlation coefficient uncertainty were analyzed.Other existing problems and precautions of using Copula function in hydrological estimation were also discussed.
【关键词】 水文计算;
Copula函数;
相关性;
尾部相关性;
不确定性;
【Key words】 hydrological estimation; Copula function; correlation coefficient; tail dependence; uncertainty analysis;
【Key words】 hydrological estimation; Copula function; correlation coefficient; tail dependence; uncertainty analysis;
【基金】 国家自然科学基金(51109085,51079100);国家“十一五”科技支撑计划课题(2009BAC56B02);武汉大学水资源与水电工程科学国家重点实验室开放基金(2011B080)
- 【文献出处】 数学的实践与认识 ,Mathematics in Practice and Theory , 编辑部邮箱 ,2012年03期
- 【分类号】O211.3;P333
- 【被引频次】20
- 【下载频次】687