edu.ucla.sspace.matrix

Interface SparseMatrix

All Superinterfaces:

Matrix

All Known Implementing Classes:

AtomicGrowingSparseHashMatrix, AtomicGrowingSparseMatrix, CellMaskedSparseMatrix, DiagonalMatrix, GrowingSparseMatrix, RowScaledSparseMatrix, SparseHashMatrix, SparseOnDiskMatrix, SparseRowMaskedMatrix, SparseSymmetricMatrix, SynchronizedSparseMatrix, YaleSparseMatrix

public interface SparseMatrix
extends Matrix

An interface for sparse Matrix implementations whose backing data storage permits accessing rows and columns with SparseVector objects.

Author:

DavidJurgens

See Also:

Matrix, SparseDoubleVector

Nested Class Summary

Nested classes/interfaces inherited from interface edu.ucla.sspace.matrix.Matrix

Matrix.Type

Method Summary

Methods

Modifier and Type	Method and Description
SparseDoubleVector	getColumnVector(int column) Returns the column as a sparse vector.
SparseDoubleVector	getRowVector(int row) Returns the row as a sparse vector.

Methods inherited from interface edu.ucla.sspace.matrix.Matrix

columns, get, getColumn, getRow, rows, set, setColumn, setColumn, setRow, setRow, toDenseArray

Method Detail

getColumnVector

SparseDoubleVector getColumnVector(int column)

Returns the column as a sparse vector. Whether updates to the vector are written through to the backing matrix is left open to the implementation.

Specified by:

getColumnVector in interface Matrix

Parameters:

column - The column to return a DoubleVector for

Returns:

A DoubleVector representing the column at column

getRowVector

SparseDoubleVector getRowVector(int row)

Returns the row as a sparse vector. Whether updates to the vector are written through to the backing matrix is left open to the implementation.

Specified by:

getRowVector in interface Matrix

Parameters:

row - the index of row to return

Returns:

A SparseDoubleVector of the row's data