Heuristic algorithms for building FFTs originally developed by Martignon, Katsikopoulos & Woike (2008)
heuristic.algorithm(formula, data, max.levels = NULL, algorithm = "max")
formula. A formula specifying a logical criterion as a function of 1 or more predictors.
dataframe. A training dataset.
integer. The maximum number of levels considered for the trees.
string. Either 'max' or 'zigzag'
A definition of an FFT