摘要
给水管道造价公式的正确性直接关系到给水工程系统技术经济计算的科学性 .本文应用数理统计学中、能有效解决已知非线性关系式参数估计问题的麦夸尔特法 ,来推求给水管道造价公式参数 .其中造价公式的参数迭代初值直接由计算机来完成 ,参数估计不受人工干预 ,能够达到一举寻优的目的 .通过算例说明该方法实用可行 。
The accuracy of the water pipe cost formula is directly corresponding to the rationality of water supply system's computing. The Levenberg Marquardt method is an effective method in estimating the parameters of a known nonlinear function, so it is used to solve the problem for determining the parameters of water pipe cost formula. The computer produces the initial values of the parameters, and result can be acquired by the method at one stroke. The calculation of cases shows that this method is feasible and can greatly increase the fit accuracy.
出处
《西安建筑科技大学学报（自然科学版）》
EI
CSCD
2000年第1期16-19,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
关键词
造价公式
麦夸尔特法
参数估计
给水管道
pipe cost formula
Levenberg Marquardt method
nonlinear function
parametric estimation
