| matrix_diagonal | Softening |
| nearest_neighbor_adaptive | Discriminant Adaptive Nearest Neighbor Classification |
| neighborhood | Neighborhood size |
| sphere | Sphering method |
| tidydann_get_threads | Control the number of threads tidydann uses |
| tidydann_has_openmp | Control the number of threads tidydann uses |
| tidydann_set_threads | Control the number of threads tidydann uses |
| tunable.nearest_neighbor_adaptive | Declare tunable parameters |
| update.nearest_neighbor_adaptive | Update a model specification |
| weighted | Weighted between class covariance |