ggplot2, glmnet, Rforestry, dplyr, R6 (>= 2.0), checkmate,
purrr, tidyr, data.table, mltools, gridExtra
ggplot2, glmnet, Rforestry, MASS, dplyr, R6 (>= 2.0),
checkmate, purrr, tidyr, data.table, mltools, gridExtra