Base learner functionality
fct-baselearner.RmdBaselearnerPolynomial:
see help page.
BaselearnerPSplineFactory:
see help page.
BaselearnerCategoricalRidge:
see help page.
BaselearnerCategoricalBinary:
see help page.
BaselearnerCentered:
see help page.
BaselearnerTensor:
see help page.
BaselearnerCustom:
see help page.