1)  fitting theory
拟合原理
2)  surface fitting principle
曲面拟合原理
1.
This paper introduces the principle of surface fitting, expounds the layout principles of height measurement with GPS by using the surface fitting principle, and advances the method of increasing its measuring accuracy.
介绍了曲面拟合原理,阐述了用曲面拟合原理进行GPS高程测量的布设原则,提出了提高其测量精度的方法。
3)  the cubic spline data interpolation method
三次样条拟合原理
4)  principle of best approximation fit
最佳逼近拟合原理
1.
On one hand, according to hydraulic characteristics and iterative theory, the astringency of this iteration formula has been testified, on the other hand, an approximate formula for the same purpose has been obtained by using the principle of best approximation fit.
一方面从数学上证明了迭代函数的收敛性,另一方面,通过对无量纲正常水深λ与已知参数m,α之间关系的分析及数值计算,利用最佳逼近拟合原理得到无量纲正常水深的一次近似计算式。
5)  least square fitting principle
最小二乘拟合原理
1.
Put forward using least square fitting principle as the optimization disposal thought on the hanging-type three-guided water-turbine generator set jigger data, and discussed the complex adjustment methods of set axis, deduced the best adjustment orientation and size of set axis.
提出了采用最小二乘拟合原理,对悬式三导水轮发电机组盘车数据进行优化处理思想,并探讨了机组轴线的综合调整方法,推导了轴线最佳调整方位和调整量的计算公式。
6)  fit
拟合
1.
Method Research on How to Fit Characteristic Curve of Engine;
发动机特性曲线拟合过程中的算法研究
2.
Lung contour repair algorithm based on spline curve fitting;
基于样条曲线拟合的肺区轮廓修补算法
3.
Research on Surface Fit of Piston Former and Processing Methods;
活塞靠模型面的拟合及加工方法研究
参考词条
补充资料:非线性最小二乘拟合
分子式:
CAS号:

性质:用最小二乘法拟合非线性方程。有些变量之间的非线性模型,通过变量变换可以化为线性模型,此称为外在线性。而有些变量之间的非线性模型,通过变量变换不能化为线性模型,通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε,其残差平方和。S(θ)是θ的函数,当模型关于θ是非线性的,正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值,拟合非线性回归方程。

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