dragon.matrix

Class DoubleRow

java.lang.Object

dragon.matrix.AbstractRow

dragon.matrix.DoubleRow

All Implemented Interfaces:

Row, Serializable, Comparable

public class DoubleRow
extends AbstractRow
implements Serializable

Row of matrix for data type of double

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

See Also:

Serialized Form

Field Summary

Fields inherited from class dragon.matrix.AbstractRow

length, loadFactor, row

Constructor Summary

Constructors

Constructor and Description
DoubleRow()
DoubleRow(int row, int num, int[] columns, double[] scores)

Method Summary

Modifier and Type	Method and Description
Cell	getCell(int column) If the specified cell does not exist, it returns null.
double	getDouble(int column)
Cell	getNonZeroCell(int index)
int	getNonZeroColumn(int index)
int[]	getNonZeroColumns()
double	getNonZeroDoubleScore(int index) Return the double score of the index-th non-zero cell
double[]	getNonZeroDoubleScores()
int	getNonZeroIntScore(int index) Return the integer score of the index-th non-zero cell
void	load(int row, int num, byte[] data) This method will be called when the sparse matrix loads rows from a binary file.
void	setNonZeroDoubleScore(int index, double score)

Methods inherited from class dragon.matrix.AbstractRow

compareTo, getLoadFactor, getNonZeroNum, getRowIndex, setLoadFactor

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleRow

public DoubleRow()

DoubleRow

public DoubleRow(int row,
                 int num,
                 int[] columns,
                 double[] scores)

Method Detail

load

public void load(int row,
                 int num,
                 byte[] data)

Description copied from interface: Row

This method will be called when the sparse matrix loads rows from a binary file.

Specified by:

load in interface Row

Parameters:

row - the index of the row

num - the number of non-zero cells in the row

data - the input data for the row

getNonZeroColumns

public int[] getNonZeroColumns()

Specified by:

getNonZeroColumns in interface Row

Returns:

an array of column indices of non-zero cells in the current row.

getNonZeroColumn

public int getNonZeroColumn(int index)

Specified by:

getNonZeroColumn in interface Row

Parameters:

index - the index-th non-zero cell in the currrent row

Returns:

the column index of the cell

getNonZeroDoubleScores

public double[] getNonZeroDoubleScores()

getNonZeroDoubleScore

public double getNonZeroDoubleScore(int index)

Description copied from interface: Row

Return the double score of the index-th non-zero cell

Specified by:

getNonZeroDoubleScore in interface Row

Parameters:

index - the index-th non-zero cell

Returns:

double score

getNonZeroIntScore

public int getNonZeroIntScore(int index)

Description copied from interface: Row

Return the integer score of the index-th non-zero cell

Specified by:

getNonZeroIntScore in interface Row

Parameters:

index - the index-th non-zero cell

Returns:

integer score

setNonZeroDoubleScore

public void setNonZeroDoubleScore(int index,
                                  double score)

getDouble

public double getDouble(int column)

getNonZeroCell

public Cell getNonZeroCell(int index)

Specified by:

getNonZeroCell in interface Row

Parameters:

index - the index-th non-zero cell

Returns:

the cell object

getCell

public Cell getCell(int column)

Description copied from interface: Row

If the specified cell does not exist, it returns null.

Specified by:

getCell in interface Row

Parameters:

column - the index of the column

Returns:

the cell object