I used tutorial Frequency-Domain Linear Regression and from original time series I get fitted data which are inverse Fourier transform of original data, but only with important frequencies. So output of this algorithm are data and I need model. Is there any way do get mathematical model using this fitted data?Or is there exist some general model which will be consisted of periodical componets (sin and cos) like Fourier fitted series?
Fourier fitted data - how to get model
predictive modeling;regression;prediction