对以幂函数族和以正交函数族为基底的最小二乘曲线拟合法作了对比分析。
The least-squares curve fitting methods based on power functions and orthogonal functions are analyzed and compared.
采用一族能较好地逼近弯剪型变形曲线的正交多项式作基函数来描述位移沿竖向变化。
The orthogonal polynomials approximated to shear-moment deformation curves were employed as the basic function to describe the displacement variation along the vertical.
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