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分数差分ARIMA过程的可逆性AI 解读

To evaluate how the condition for invertibility of fractional ARIMA (p, d, q) processes can be achieved, we formulate a measure based on the prediction error related to the autoregressive inversion. Some results are obtained by investigating the behaviour of the measure. A conclusion is that the condition for invertibility is satisfied when the degree of fractionally differencing d exceeds −1. As another one, it is pointed out that invertibility is not so easily achieved…

分数差分 ARIMA 过程的可逆性AI 解读

To evaluate how the condition for invertibility of fractional ARIMA (p, d, q) processes can be achieved, we formulate a measure based on the prediction error related to the autoregressive inversion. Some results are obtained by investigating the behaviour of the measure. A conclusion is that the condition for invertibility is satisfied when the degree of fractionally differencing d exceeds −1. As another one, it is pointed out that invertibility is not so easily achieved…