| ADictionary | This dictionary class aims to encapsulate the storage and operations over unique tuple values of a column group. | 
| DeltaDictionary | This dictionary class is a specialization for the DeltaDDCColgroup. | 
| Dictionary | This dictionary class aims to encapsulate the storage and operations over unique floating point values of a column
 group. | 
| DictLibMatrixMult | Utility interface for dictionary matrix multiplication | 
| MatrixBlockDictionary |  | 
| QDictionary | This dictionary class aims to encapsulate the storage and operations over unique floating point values of a column
 group. |