| CVfoldsTree | Create balanced cross-validation folds for hyperparameter tuning |
| Dat_Tree | Construct design data used for fitting fusedTree models |
| fusedTree | Fit a fusedTree model with or without fusion penalty |
| PenOpt | Tuning of the penalty parameters of fusedTree using cross-validation |
| predict.fusedTree | Predict Method for Fused Tree Models |