这是我的代码:
arimafit <- arima(x1, order = c(5,1,5), seasonal = list(order = c(0,1,0)))
fcast1 <- forecast(arimafit,50)
summary(fcast1)
结果是:
Forecast method: ARIMA(5,1,5)
Model Information:
Series: x1
ARIMA(5,1,5)
也就是说,使用季节性参数并不合适。我已经做了很多谷歌搜索和玩弄这个论点,但无济于事。任何帮助,将不胜感激