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	Model wpływu losowego Fouriera	Analiza danych panelowych Fouriera
Dziedzina	Ekonometria	Ekonometria
Rodzina	Regression model	Regression model
Rok powstania	2006-2012	2006 (Fourier framework); panel extensions 2010s
Twórca	Becker, Enders & Lee; Enders & Lee	Becker, Enders, and Lee (Fourier unit root framework); extended to panel data by subsequent applied econometricians
Typ	Panel regression with Fourier approximation	Panel regression with Fourier terms
Źródło pierwotne	Becker, R., Enders, W., & Lee, J. (2006). A stationary test in the presence of an unknown number of smooth breaks. Journal of Time Series Analysis, 27(3), 381-409.	Becker, R., Enders, W., & Lee, J. (2006). A stationary test in the presence of an unknown number of smooth breaks. Journal of Time Series Analysis, 27(3), 381-409.
Inne nazwy	Fourier RE model, FFF random effects, flexible Fourier random effects, Fourier augmented random effects	Fourier panel regression, smooth structural break panel model, trigonometric panel data model, Fourier-flexible panel estimator
Pokrewne	5	6
Podsumowanie	The Fourier Random Effects Model extends the standard random effects panel estimator by incorporating trigonometric (Fourier) terms to approximate smooth, gradual structural change in time trends or intercepts. It retains the GLS efficiency advantages of the random effects estimator while allowing parameters to shift continuously over time without requiring knowledge of exact break dates.	Fourier panel data analysis embeds trigonometric sine and cosine terms into a standard panel regression to approximate smooth, gradual structural shifts in the data-generating process. Rather than assuming a sharp break at a known date, the Fourier approach lets the data reveal the timing and shape of any structural change through a flexible trigonometric approximation, while retaining the cross-sectional and time-series structure of panel data.