org.apache.mahout.math

Class SparseColumnMatrix

java.lang.Object

org.apache.mahout.math.AbstractMatrix

org.apache.mahout.math.SparseColumnMatrix

All Implemented Interfaces:

Cloneable, Iterable<MatrixSlice>, Matrix, VectorIterable

Deprecated.

tons of inconsistences. Use transpose view of SparseRowMatrix for fast column-wise iteration.

public class SparseColumnMatrix
extends AbstractMatrix

sparse matrix with general element values whose columns are accessible quickly. Implemented as a column array of SparseVectors.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.mahout.math.AbstractMatrix

AbstractMatrix.TransposeViewVector

Field Summary

Fields inherited from class org.apache.mahout.math.AbstractMatrix

COL, columnLabelBindings, columns, ROW, rowLabelBindings, rows

Constructor Summary

Constructors

Constructor and Description
SparseColumnMatrix(int rows, int columns) Deprecated. Construct a matrix of the given cardinality
SparseColumnMatrix(int rows, int columns, Vector[] columnVectors) Deprecated. Construct a matrix of the given cardinality with the given data columns
SparseColumnMatrix(int rows, int columns, Vector[] columnVectors, boolean shallow) Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
Matrix	assignColumn(int column, Vector other) Deprecated. Assign the other vector values to the column of the receiver
Matrix	assignRow(int row, Vector other) Deprecated. Assign the other vector values to the row of the receiver
Matrix	clone() Deprecated. Return a copy of the recipient
int[]	getNumNondefaultElements() Deprecated. Return the number of values in the recipient
double	getQuick(int row, int column) Deprecated. Return the value at the given indexes, without checking bounds
Matrix	like() Deprecated. Return an empty matrix of the same underlying class as the receiver
Matrix	like(int rows, int columns) Deprecated. Returns an empty matrix of the same underlying class as the receiver and of the specified size.
int	numSlices() Deprecated. Abstracted out for the iterator
void	setQuick(int row, int column, double value) Deprecated. Set the value at the given index, without checking bounds
String	toString() Deprecated.
Matrix	transpose() Deprecated. Return a new matrix that is the transpose of the receiver
Vector	viewColumn(int column) Deprecated. Returns a view of a row.
Matrix	viewPart(int[] offset, int[] size) Deprecated. Return a view into part of a matrix.

Methods inherited from class org.apache.mahout.math.AbstractMatrix

aggregate, aggregateColumns, aggregateRows, asFormatString, assign, assign, assign, assign, assign, columnSize, determinant, divide, get, get, getColumnLabelBindings, getFlavor, getRowLabelBindings, iterateAll, iterateNonEmpty, iterator, minus, numCols, numRows, plus, plus, rowSize, set, set, set, set, set, set, setColumnLabelBindings, setRowLabelBindings, times, times, times, timesSquared, viewDiagonal, viewPart, viewRow, zSum

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SparseColumnMatrix

public SparseColumnMatrix(int rows,
                  int columns,
                  Vector[] columnVectors)

Deprecated.

Construct a matrix of the given cardinality with the given data columns

Parameters:

columns - a RandomAccessSparseVector[] array of columns

columnVectors -

SparseColumnMatrix

public SparseColumnMatrix(int rows,
                  int columns,
                  Vector[] columnVectors,
                  boolean shallow)

Deprecated.

SparseColumnMatrix

public SparseColumnMatrix(int rows,
                  int columns)

Deprecated.

Construct a matrix of the given cardinality

Parameters:

rows - # of rows

columns - # of columns

Method Detail

clone

public Matrix clone()

Deprecated.

Description copied from interface: Matrix

Return a copy of the recipient

Specified by:

clone in interface Matrix

Overrides:

clone in class AbstractMatrix

Returns:

a new Matrix

numSlices

public int numSlices()

Deprecated.

Abstracted out for the iterator

Specified by:

numSlices in interface VectorIterable

Overrides:

numSlices in class AbstractMatrix

Returns:

AbstractMatrix.numCols()

getQuick

public double getQuick(int row,
              int column)

Deprecated.

Description copied from interface: Matrix

Return the value at the given indexes, without checking bounds

Parameters:

row - an int row index

column - an int column index

Returns:

the double at the index

like

public Matrix like()

Deprecated.

Description copied from interface: Matrix

Return an empty matrix of the same underlying class as the receiver

Returns:

a Matrix

like

public Matrix like(int rows,
          int columns)

Deprecated.

Description copied from interface: Matrix

Returns an empty matrix of the same underlying class as the receiver and of the specified size.

Parameters:

rows - the int number of rows

columns - the int number of columns

setQuick

public void setQuick(int row,
            int column,
            double value)

Deprecated.

Description copied from interface: Matrix

Set the value at the given index, without checking bounds

Parameters:

row - an int row index into the receiver

column - an int column index into the receiver

value - a double value to set

getNumNondefaultElements

public int[] getNumNondefaultElements()

Deprecated.

Description copied from interface: Matrix

Return the number of values in the recipient

Specified by:

getNumNondefaultElements in interface Matrix

Overrides:

getNumNondefaultElements in class AbstractMatrix

Returns:

an int[2] containing [row, column] count

viewPart

public Matrix viewPart(int[] offset,
              int[] size)

Deprecated.

Description copied from interface: Matrix

Return a view into part of a matrix. Changes to the view will change the original matrix.

Specified by:

viewPart in interface Matrix

Overrides:

viewPart in class AbstractMatrix

Parameters:

offset - an int[2] offset into the receiver

size - the int[2] size of the desired result

Returns:

a matrix that shares storage with part of the original matrix.

assignColumn

public Matrix assignColumn(int column,
                  Vector other)

Deprecated.

Description copied from interface: Matrix

Assign the other vector values to the column of the receiver

Parameters:

column - the int row to assign

other - a Vector

Returns:

the modified receiver

assignRow

public Matrix assignRow(int row,
               Vector other)

Deprecated.

Description copied from interface: Matrix

Assign the other vector values to the row of the receiver

Parameters:

row - the int row to assign

other - a Vector

Returns:

the modified receiver

viewColumn

public Vector viewColumn(int column)

Deprecated.

Description copied from class: AbstractMatrix

Returns a view of a row. Changes to the view will affect the original.

Specified by:

viewColumn in interface Matrix

Overrides:

viewColumn in class AbstractMatrix

Parameters:

column - Which column to return.

Returns:

A vector that references the desired column.

transpose

public Matrix transpose()

Deprecated.

Description copied from interface: Matrix

Return a new matrix that is the transpose of the receiver

Specified by:

transpose in interface Matrix

Overrides:

transpose in class AbstractMatrix

Returns:

the transpose

toString

public String toString()

Deprecated.

Overrides:

toString in class AbstractMatrix