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本文指出线性化后的曲线拟合参数不是无偏估计量.对此,作者用牛顿(Newtom)法和麦夸尔特(Marquardt)法对曲线回归方程系数进行优化,提高了曲线拟合精度.通过实例计算,说明此法用于建筑物的沉降分析效果显著.
This paper points out that the curve fitting parameters after linearization are not unbiased estimators. To this end, the author uses Newton method and Marquardt method to optimize the coefficients of the regression equation and improve the accuracy of curve fitting. Through example calculations, it shows that this method is effective for settlement analysis of buildings.