Jämför metoder
Granska de valda metoderna sida vid sida; rader som skiljer sig är markerade.
| ARIMA-modell (Autoregressiv Integrerad Glidande Medelvärdesmodell)× | ARMA-modell (Autoregressiv glidande medelvärde)× | Granger-kausalitetstest× | Strukturell vektorautoregression (SVAR)× | |
|---|---|---|---|---|
| Ämnesområde | Ekonometri | Ekonometri | Ekonometri | Ekonometri |
| Familj | Regression model | Regression model | Regression model | Regression model |
| Ursprungsår≠ | 1970 | 1970 | 1969 | 1980 |
| Upphovsperson≠ | George Box and Gwilym Jenkins | George E. P. Box and Gwilym M. Jenkins | Clive W. J. Granger | Sims (1980); identification schemes by Blanchard & Quah (1989) |
| Typ≠ | Time series forecasting model | Time series model | Causality test (F-test on VAR) | Multivariate time series model |
| Ursprungskälla≠ | Box, G. E. P., & Jenkins, G. M. (1970). Time Series Analysis: Forecasting and Control. Holden-Day. link ↗ | Box, G. E. P., & Jenkins, G. M. (1970). Time Series Analysis: Forecasting and Control. Holden-Day. link ↗ | Granger, C. W. J. (1969). Investigating Causal Relations by Econometric Models and Cross-spectral Methods. Econometrica, 37(3), 424–438. DOI ↗ | Blanchard, O. J., & Quah, D. (1989). The dynamic effects of aggregate demand and supply disturbances. American Economic Review, 79(4), 655-673. link ↗ |
| Alias | ARIMA, Box-Jenkins model, integrated ARMA, ARIMA(p,d,q) | ARMA, Box-Jenkins model, autoregressive moving average, AR(p)MA(q) | Granger test, GC test, predictive causality test, Granger non-causality test | SVAR, structural vector autoregression, identified VAR, structural VAR model |
| Närliggande≠ | 6 | 5 | 5 | 5 |
| Sammanfattning≠ | The ARIMA(p,d,q) model is the standard workhorse for univariate time series forecasting. It combines autoregressive terms (past values), differencing to induce stationarity, and moving average terms (past shocks) into a unified linear framework. Developed by Box and Jenkins (1970), it remains one of the most widely applied models in econometrics and applied statistics. | The ARMA(p,q) model describes a stationary time series as a combination of two components: an autoregressive part that regresses the current value on its own past p values, and a moving average part that accounts for past q error terms. It is the foundational framework of the Box-Jenkins methodology for univariate time series modelling and short-run forecasting. | The Granger causality test is a statistical hypothesis test that determines whether past values of one time series help predict future values of another, beyond what that series' own past already explains. Introduced by Clive Granger in 1969, it is the standard approach for assessing predictive causality in VAR-based time-series analysis. | Structural VAR extends the reduced-form VAR by imposing economic theory-based restrictions that identify orthogonal structural shocks. This allows researchers to disentangle the causal effects of distinct economic disturbances — such as supply versus demand shocks — and trace their dynamic propagation through a system of variables via impulse response functions and forecast error variance decompositions. |
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