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Ikke-lineær KPSS-test

Den ikke-lineære KPSS-test udvider den klassiske Kwiatkowski-Phillips-Schmidt-Shin (KPSS) stationaritetstest ved at modellere ukendte, glidende strukturelle brud i den deterministiske trend ved hjælp af en Fourier-approksimation. Under nulhypotesen er serien stationær omkring en fleksibel, ikke-lineær trend, hvilket beskytter mod falske enhedsrod-fund forårsaget af regimeskift eller gradvise overgange.

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Kilder

  1. 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: 10.1111/j.1467-9892.2006.00478.x
  2. Enders, W., & Lee, J. (2012). A unit root test using a Fourier series to approximate smooth breaks. Oxford Bulletin of Economics and Statistics, 74(4), 574-599. DOI: 10.1111/j.1468-0084.2011.00662.x

Sådan citerer du denne side

ScholarGate. (2026, June 3). Nonlinear Kwiatkowski-Phillips-Schmidt-Shin Test. ScholarGate. https://scholargate.app/da/econometrics/nonlinear-kpss-test

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ScholarGateNonlinear KPSS Test (Nonlinear Kwiatkowski-Phillips-Schmidt-Shin Test). Hentet 2026-06-15 fra https://scholargate.app/da/econometrics/nonlinear-kpss-test · Datasæt: https://doi.org/10.5281/zenodo.20539026