| balanced_accuracy_score | Computes balanced accuracy. |
| curvature_estimation | Computes the curvatures of all samples in the training set. |
| f1_score | Computes the F1-score. |
| kKNN | Adaptive k-Nearest Neighbor Classifier |
| point_curvature_estimation | Computes the curvature of a single test sample's neighborhood. |
| quantize | Quantizes real values to integer levels. |
| sigmoid | A helper sigmoid function. |
| testa_KNN | Standard k-NN classifier. |