docs: public <Type extends DataSet> OnLineStatistics[] evaluateFeatureImportance(DataSet<Type> data)
      {
          if(data instanceof ClassificationDataSet)
              return evaluateFeatureImportance(data, new MDI(ImpurityScore.ImpurityMeasure.GINI));
          else
              return evaluateFeatureImportance(data, new ImportanceByUses());
      }