Jämför metoder
Granska de valda metoderna sida vid sida; rader som skiljer sig är markerade.
| Fourier ADF-enhetstest× | Phillips-Perron enhetstest× | |
|---|---|---|
| Ämnesområde | Ekonometri | Ekonometri |
| Familj | Regression model | Regression model |
| Ursprungsår≠ | 2006-2012 | 1988 |
| Upphovsperson≠ | Becker, Enders, and Lee; Enders and Lee | Peter C. B. Phillips and Pierre Perron |
| Typ≠ | Unit root test with smooth structural breaks | Hypothesis test (unit root) |
| Ursprungskälla≠ | Becker, R., Enders, W., & Lee, J. (2006). A stationarity test in the presence of an unknown number of smooth breaks. Journal of Time Series Analysis, 27(3), 381-409. DOI ↗ | Phillips, P. C. B., & Perron, P. (1988). Testing for a unit root in time series regression. Biometrika, 75(2), 335–346. DOI ↗ |
| Alias | Fourier ADF test, FADF test, Flexible Fourier ADF, Fourier-based ADF unit root test | PP test, PP unit root test, Phillips-Perron test, nonparametric unit root test |
| Närliggande≠ | 6 | 5 |
| Sammanfattning≠ | The Fourier ADF unit root test extends the standard Augmented Dickey-Fuller framework by incorporating low-frequency Fourier terms into the deterministic component. This allows the test to approximate smooth, gradual structural breaks in the level or trend of a time series without requiring prior knowledge of break number, timing, or form. | The Phillips-Perron (PP) test is a nonparametric unit root test for time series that corrects for serial correlation and heteroscedasticity in the error term without adding lagged differences. Introduced by Phillips and Perron (1988), it applies a kernel-based long-run variance estimator to adjust the Dickey-Fuller statistic, making it robust to a wide class of weakly dependent error processes. |
| ScholarGateDatamängd ↗ |
|
|