Feature importances

feature_importances(model::M, fitresult, report)

For a given model of model type M supporting intrinsic feature importances, calculate the feature importances from the model's fitresult and report as an abstract vector of feature::Symbol => importance::Real pairs (e.g [:gender =>0.23, :height =>0.7, :weight => 0.1]).

New model implementations

The following trait overload is also required: MLJModelInterface.reports_feature_importances(::Type{<:M}) = true

If for some reason a model is sometimes unable to report feature importances then feature_importances should return all importances as 0.0, as in [:gender =>0.0, :height =>0.0, :weight => 0.0].