ARIMA model or Time Fourier series

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ARIMA model or Time Fourier series
Fulvio Polo, Other, Italy

The ARIMA model is a useful model, but not precise enough.
An interesting application for phenomenons estimated as cyclic, is the Time Fourier series.
Particularly for short-time projecting, I think it very useful (But , I repeat, only for cyclic phenomenons).
ARIMA is efficacious if we are sure about the influence of the state before or the state after.



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