importance module provides functionality for evaluating hyperparameter importances based on completed trials in a given study. The utility function
get_param_importances() takes a
Study and optional evaluator as two of its inputs. The evaluator must derive from
BaseImportanceEvaluator, and is initialized as a
FanovaImportanceEvaluator by default when not passed in. Users implementing custom evaluators should refer to either
MeanDecreaseImpurityImportanceEvaluator as a guide, paying close attention to the format of the return value from the Evaluator’s
Evaluate parameter importances based on completed trials in the given study.
fANOVA importance evaluator.
Mean Decrease Impurity (MDI) parameter importance evaluator.