Firstly, the modified Y-W equation was used to estimate the parameters of the time-varied auto-regressive part and the error signal;

首先，采用改进的Y—W方程对TVARMA模型时变自回归部分系数进行估计，并计算残差序列；

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Firstly, the modified Y-W equation was used to estimate the parameters of the time-varied auto-regressive part and the error signal;

首先，采用改进的Y—W方程对TVARMA模型时变自回归部分系数进行估计，并计算残差序列；

youdao