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Results tagged with arima
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user 308471
Refers to the AutoRegressive Integrated Moving Average model used in time series modeling both for data description and for forecasting. This model generalizes the ARMA model by including a term for differencing, which is useful for removing trends and handling some types of non-stationarity.
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answers
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Can Seasonal ARIMA model be expressed without backshifts?
I was wondering if I have an ARIMA model expressed like this:
is it possible to express it in a similar way, without backshifts? … Are there any resources where I can find seasonal ARIMA equation without backshifts? …
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2
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What does c refer to in AR(p) and MA(q) model mathematical definitions?
What exactly does c represent in these formulas defining AR(p) and MA(q) models?
MA(q):
(https://otexts.com/fpp2/MA.html)
AR(p):
https://otexts.com/fpp2/AR.html
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