| exampleresult | preprocomb example |
| getpreprocessor | gets preprocessor definition |
| getprogrammaticprediction | parallel computation of classification accuracy holdout rounds |
| GridClass-class | container for preprocessor combinations and preprocessed data sets. |
| initializedataclassobject | constructor function for creating a DataClass object |
| prepro | the MAIN function for interactive use. |
| PreprocessorClass-class | an abstract class from which concrete preprocessor (sub) classes are inhereted. |
| preprocessordefinitionstorage | environment for storing preprocessor definitions |
| preprocomb | the MAIN function of programmatic use. |
| PreProCombClass-class | container for combination evaluation |
| preprodefault | seven default phases with preprocessing techniques |
| setgrid | constructor function for creating the combinations |
| setphase | constructor function for defining a preprocessing phase. |
| setpreprocessor | constructor function for adding a new preprocessing technique to the system |
| showrules | shows association rules for classification accuracy. |
| testpreprocessors | test preprocessing techniques against data |
| transformdata | transformdata |