Metodebevisregistrering

Fourier WLS

Fourier WLS is a time-series regression technique that embeds low-frequency Fourier trigonometric terms into a Weighted Least Squares framework to capture smooth, gradual structural breaks in means or trends without requiring the researcher to pre-specify their location, timing, or number.

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Kilderegistrering

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Fourier Flexible Weighted Least Squares

Taksonomisk metoderegistrering · regression-model / econometrics

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
Gallant, A. R. (1984). The Fourier flexible form. American Journal of Agricultural Economics, 66(2), 204–208. · DOI 10.2307/1241043

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Same method familyOLS Regressionmachine-suggested · Relational suggestion, not evidence.