Estimation of GM (1, 1) model parameter usually adopts the least square criterion, but test of model precision often USES average relative error criterion.
估计GM(1,1)模型中的参数通常采用最小二乘准则，而在模型精度检验时又常采用平均相对误差。
The step response method of the outlet superheat of evaporator is measured by conducting experiments, and dynamic model of EEV is established by LSE (least square estimation).
通过阶跃响应实验法，利用最小二乘法建立燃气机热泵蒸发器—电子膨胀阀系统的过热度响应动态模型。
In this paper, the estimation of coefficient functions in a varying-coefficients EV model are constructed by using kernel smoothing and generalized least square method.
利用核函数法和广义最小二乘法给出了一般变系数ev模型系数参数的估计，得到了估计的强相合性。
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