| clean_noise | Noise cleaning wrapper |
| clean_outliers | Outliers cleaning wrapper |
| discretize | Discretization wrapper |
| feature_selection | Feature selection wrapper |
| impute_missing | Missing values imputation wrapper |
| instance_selection | Instance selection wrapper |
| normalize | Normalization wrapper |
| oversample | Oversampling wrapper |
| smartdata | smartdata: A package to ease data preprocessing tasks |
| space_transformation | Space transformation wrapper |
| which_options | Prints options for a wrapper or a certain preprocessing method |