Compara mètodes

	Model d'ARIMA (Autoregressive Integrated Moving Average)	El Mètode Theta
Camp	Econometria	Econometria
Família	Regression model	Regression model
Any d'origen	2015	2000
Autor original	Box & Jenkins (Box-Jenkins methodology)	Assimakopoulos & Nikolopoulos
Tipus	Univariate time-series model	Univariate time-series forecasting model
Font seminal	Box, G. E. P., Jenkins, G. M., Reinsel, G. C. & Ljung, G. M. (2015). Time Series Analysis: Forecasting and Control (5th ed.). Wiley. ISBN: 978-1118675021	Assimakopoulos, V. & Nikolopoulos, K. (2000). The Theta Model: A Decomposition Approach to Forecasting. International Journal of Forecasting, 16(4), 521-530.
Àlies	Box-Jenkins model, ARIMA(p,d,q), ARIMA Modeli	theta model, theta forecasting, Theta Yöntemi — M3 Tahmin Yarışması Birincisi
Relacionats	5	4
Resum	ARIMA is a univariate time-series forecasting model that combines autoregressive, integrated (differencing), and moving-average components to predict a single continuous series from its own past. It is the centrepiece of the Box-Jenkins methodology set out in Box, Jenkins, Reinsel & Ljung's Time Series Analysis (5th ed., 2015).	The Theta Method is a univariate time-series forecasting model introduced by Assimakopoulos and Nikolopoulos in 2000. It decomposes a series into two theta lines that capture its long-run trend and its short-run dynamics, forecasts each line separately, and combines them by a weighted average. Its simplicity and accuracy made it the winner of the M3 forecasting competition.