R: Make non-linear features

makef {relgam}

R Documentation

Make non-linear features

Internal function for making non-linear features.

makef(x, r, df, tol = 0.01, removeLin = T)

`x`	Input matrix, of dimension `nobs x nvars`; each row is an observation vector.
`r`	Vector of residuals.
`df`	Degrees of freedom for the fit.
`tol`	A tolerance for same-ness or uniqueness of the x values. To be passed to the `smooth.spline()` function. Default is `0.01`.
`removeLin`	If `TRUE` (default), removes the linear component from the newly created non-linear features.

A list:

`f`	Non-linear features associated with the features in `x`.
`spline_fit`	A list of the spline fits of the residual against each feature. Useful for creating the non-linear features for new data.
`lin_comp_fit`	If `removeLin = TRUE`, a list of coefficients for simple linear regression of non-linear feature on original feature. Useful for creating the non-linear features for new data.

[Package relgam version 1.0 Index]