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Regression modelEconometrics / time series

Den ikke-lineære ADF-enhed rodtest (KSS-test)

Den ikke-lineære ADF-enhed rodtest, mest prominent operationaliseret af Kapetanios, Shin og Snell (2003), udvider den klassiske Augmented Dickey-Fuller-test til at detektere middel-reversion, der forekommer via en Exponential Smooth Transition Autoregressive (ESTAR)-proces. Den tester nulhypotesen om en enhedsrod mod et ikke-lineært stationært alternativ, der indfanger justeringsdynamikker, som den standard lineære ADF-test går glip af.

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Kilder

  1. Kapetanios, G., Shin, Y., & Snell, A. (2003). Testing for a unit root in the nonlinear STAR framework. Journal of Econometrics, 112(2), 359-379. DOI: 10.1016/S0304-4076(02)00202-6
  2. Dickey, D. A., & Fuller, W. A. (1979). Distribution of the estimators for autoregressive time series with a unit root. Journal of the American Statistical Association, 74(366), 427-431. DOI: 10.2307/2286348

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ScholarGate. (2026, June 3). Nonlinear Augmented Dickey-Fuller Unit Root Test. ScholarGate. https://scholargate.app/da/econometrics/nonlinear-adf-unit-root-test

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ScholarGateNonlinear ADF Unit Root Test (Nonlinear Augmented Dickey-Fuller Unit Root Test). Hentet 2026-06-15 fra https://scholargate.app/da/econometrics/nonlinear-adf-unit-root-test · Datasæt: https://doi.org/10.5281/zenodo.20539026