(mlr3)mlr3::Learner
Initial learner. Internally wrapped into a PipeOpLearnerCV
with resampling.method = "insample" as a default.
All parameters can be adjusted through the resulting Graph's param_set.
Defaults to lrn("classif.featureless").
Note: An initial predictor can also be supplied via the init_predictor parameter.
param_vals
list
List of parameter values passed on to MCBoost$new.