Through correlation analysis of temperature, heat and wheat yield in Shaanxi province, an optimum regression model of them is established.
通过温热因子和小麦产量的相关分析及最优回归模型的建立，结果表明在降水较少的地区，温热增产作用未能正常发挥；
This paper gives weighted least squares estimate and the method to choose optimum weighted function for linear regression model.
给出了线性回归模型中的加权最小二乘估计以及最优权数的选择。
The calculating formulae of weighted optimum curve regression model parameter given in this paper possesses high speed of parameter correcting, high precision of fitting and obvious effect.
本文给出的带权优化曲线回归模型参数计算公式，修正参数速度快，拟合精度高，效果显著。
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