matlab nlinfit函数返​回的雅克比矩阵J代表​的是么意思。

matlab nlinfit函数返回的雅克比矩阵J代表的是么意思
[beta,r,J]=nlinfit(x',y','yut',beta0)

 Accepted Answer

pijimic
pijimic on 20 Nov 2022

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若A=J'*J, C=inv(A), 则 C 中包含了非线性方程及其参数(统计数)的误差信息,C 的对角线元素代表了对应统计数(标准化)的方差,非对角线元素代表的是相关统计数(标准化)的协方差。所谓标准化是指将离回归方差视为1。

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