การเลือกฟีเจอร์ที่สำคัญ

# select only features with relative importance higher than 1%
selected_features = relative_importances[relative_importances.____>0.01]

# create a list from those features: done
selected_list = selected_features.index

# transform both features_train and features_test components to include only selected features
features_train_selected = features_train[selected_list]
features_test_selected = ____[____]