Several approximate formulas are given for residual analysis of the leastsquareestimator in nonlinear regression model.
本文给出了若干近似公式，以分析非线性回归模型的最小二乘估计的残差。
2
The randomly weighted leastsquareestimator (RWLSE) for the parametric component in semi-parametric regression models was mainly discussed.
主要考虑了同方差型的半参数线性回归模型中参数的随机加权最小二乘估计（RWLSE）。
3
If we use the equation of leastsquareestimator directly, computing amount is often very great because course of computing need calculate the inverse of matrix and multiplication of matrix.