| generate_ball_data | Generate Synthetic Three-class Ball Data |
| hnp_boxplot | HNP Under-classification Error Box Plot |
| hnp_map_classes | Classes Mapping function for HNP Algorithm Map ordered class labels to internal levels "1", ..., "T" |
| hnp_summary | HNP Classifier's Performance Summary |
| hnp_umbrella | HNP Umbrella Algorithm |
| train_nn_and_get_scores | Neural Network Classifier Helper Function |