| Interface | Description | 
|---|---|
| DistributedMatrix | Represents a distributively stored matrix backed by one or more RDDs. | 
| Class | Description | 
|---|---|
| BlockMatrix | Represents a distributed matrix in blocks of local matrices. | 
| CoordinateMatrix | Represents a matrix in coordinate format. | 
| IndexedRow | Represents a row of  IndexedRowMatrix. | 
| IndexedRowMatrix | Represents a row-oriented  DistributedMatrixwith
 indexed rows. | 
| MatrixEntry | Represents an entry in a distributed matrix. | 
| RowMatrix | Represents a row-oriented distributed Matrix with no meaningful row indices. |