水力发电2017，Vol.43Issue(2)：23-26,4.
抗差主成分估计在单位线推算中的应用
Robust Principal Component Estimate in Unit Hydrograph Evaluation
摘要
Abstract
The Unit Hydrograph is widely used in simulating surface runoff processes.However,the results of least squares estimator are not satisfactory or even unreasonable when the matrix is ill-conditioned or outlier in the observed data.For solving these problems,the Robust Least Squares Estimator and Robust Principal Component Estimate are used and the results are compared with the Least Squares Estimator.The calculation results show that the Robust Principal Component Estimate cannot be able to overcome the ill-conditioned matrix,but can withstand the observations of interference in outliers.关键词
单位线/最小二乘法/抗差最小二乘法/抗差主成分估计Key words
Unit Hydrograph/Least Squares Estimator/Robust Least Squares Estimator/Robust Principal Component Estimate分类
建筑与水利引用本文复制引用
王玉丽,包为民,沈丹丹,张阳,费如君..抗差主成分估计在单位线推算中的应用[J].水力发电,2017,43(2):23-26,4.基金项目
国家自然科学基金面上基金项目资助(51279057) （51279057）
水利部公益性行业科研专项项目(201501059) （201501059）
