| Default Classes | Description |
| NumLabelC | Represents class labels for classification in PatternRec. |
| NumDataC | Stores data value tuples for use in data sets within PatternRec |
| NumDataSetC | Represents data sets using lists for use with PatternRec classes. |
| NumVDataSetC | Refines NumDataSetC to specify input type is VectorC. |
| NumVCDataSetC | Refines NumVDataSetC to specify output type is MatrixC (covariance). |
| NumVLDataSetC | Refines NumVDataSetC to specify output type is NumLabelC. |
| NumVSDataSetC | Refines NumVDataSetC to specify output type is StringC. |
| NumVVDataSetC | Refines NumVDataSetC to specify output type is VectorC. |
| DataSetTuple3C | Represents a data set with three items |