| build_forest_predict | Prediction using Random Forest or Multivariate Random Forest | 
| build_single_tree | Model of a single tree of Random Forest or Multivariate Random Forest | 
| CrossValidation | Generate training and testing samples for cross validation | 
| Imputation | Imputation of a numerical vector | 
| Node_cost | Information Gain | 
| predicting | Prediction of testing sample in a node | 
| single_tree_prediction | Prediction of Testing Samples for single tree | 
| splitt2 | Split of the Parent node | 
| split_node | Splitting Criteria of all the nodes of the tree | 
| variable_importance_measure | Calculates variable Importance of a Regression Tree Model |