摘要
本文探讨了用Marquardt迭代法拟合模型时应注意的3个问题;介绍了解决方差不等问题的方法;改进了互为自变量模型的拟合方法;最后论述了多形地位指数模型的拟合。
Discusses three problems in fitting mathematical models by Marquardt iteration and method to slove unepual variance. The fitting method of exchange independent variable with dependent variable has been improved. Finally, fitting method of developing polymorphic site index model has been demonstrated.
出处
《西北林学院学报》
CSCD
1991年第3期41-47,共7页
Journal of Northwest Forestry University
关键词
立地
数学模型
拟合
mathematical model fitting method
Marquardt iteration
independent variable
unequal variance
polymorphic site index model
