权重系数

ARIMA模型

新陈代谢GM模型

最小二乘法权重

${\beta }_1$

${\beta }_2$

MAPE权重

${\alpha }_1$

${\alpha }_2$

组合权重系数

$\frac{{\alpha }_1{\beta }_1}{{\alpha }_1{\beta }_1+{\alpha }_2{\beta }_2}$

$\frac{{\alpha }_2{\beta }_2}{{\alpha }_1{\beta }_1+{\alpha }_2{\beta }_2}$