对最小二乘法拟合水位～流量关系曲线的改进  

Improvement of the least-square fitting method to water level-flow rate relation

作　　者：杨朝晖[1] 张纪平[2] 

机构地区：[1]泉州经贸职业技术学院公共基础部,福建泉州362000 [2]泉州师范学院数学系,福建泉州362000

出　　处：《宁德师范学院学报（自然科学版）》2014年第2期120-123,共4页Journal of Ningde Normal University(Natural Science)

摘　　要：采用双曲函数作为基函数来改进文[1]中以幂函数为基函数的最小二乘曲线拟合方法,拟合水位～流量关系曲线,进一步提高拟合的精度和效率.By using the hyperbolic functions as the base functions to improve example NO.1 given in the paper, which is based on the power function of least squares curve fitting methods of water-level discharge relation curve fitting, to further improve the accuracy and efficiency of fitting.

关 键 词：多项式 最小二乘法 曲线拟合 基函数 

分 类 号：U442.3[建筑科学—桥梁与隧道工程]