Allow Pipeline
and TransformedTargetModel
to support feature importances
#963
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A model that supports features importances exposes these via the method
feature_importances
. However, these importances are hidden if the model is wrapped inTransformedTargetModel
or is part of a pipeline. This PR implementsfeature_importances
(and the traitreports_feature_importances
) for these two wrappers by forwarding the atomic methods.For testing purposes, the test model
DecisionTreeClassifier
in /test/_models/DecisionTree.jl has been updated to support feature importances.@OkonSamuel