net.librec.math.structure

Class SymmMatrix

java.lang.Object

net.librec.math.structure.SymmMatrix

public class SymmMatrix
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
protected int	dim

Constructor Summary

Constructors

Constructor and Description
SymmMatrix(int dim) Construct a symmetric matrix
SymmMatrix(SymmMatrix mat) Construct a symmetric matrix by deeply copying data from a given matrix

Method Summary

Methods

Modifier and Type	Method and Description
void	add(int row, int col, double val) add a value to entry (row, col)
SymmMatrix	clone() Make a deep copy of current matrix
boolean	contains(int row, int col) Get a value at entry (row, col)
double	get(int row, int col) Get a value at entry (row, col)
com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double>	getData()
int	getDim()
SparseVector	row(int row) Retrieve a complete row of similar items
void	set(int row, int col, double val) set a value to entry (row, col)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

dim

protected int dim

Constructor Detail

SymmMatrix

public SymmMatrix(int dim)

Construct a symmetric matrix

Parameters:

dim - matrix dimension

SymmMatrix

public SymmMatrix(SymmMatrix mat)

Construct a symmetric matrix by deeply copying data from a given matrix

Parameters:

mat - a given matrix

Method Detail

clone

public SymmMatrix clone()

Make a deep copy of current matrix

Overrides:

clone in class java.lang.Object

get

public double get(int row,
         int col)

Get a value at entry (row, col)

Parameters:

row - row index

col - column index

Returns:

value at entry (row, col)

contains

public boolean contains(int row,
               int col)

Get a value at entry (row, col)

Parameters:

row - row index

col - column index

Returns:

value at entry (row, col)

set

public void set(int row,
       int col,
       double val)

set a value to entry (row, col)

Parameters:

row - row index

col - column index

val - value to set

add

public void add(int row,
       int col,
       double val)

add a value to entry (row, col)

Parameters:

row - row index

col - column index

val - value to add

row

public SparseVector row(int row)

Retrieve a complete row of similar items

Parameters:

row - row index

Returns:

a complete row of similar items

getDim

public int getDim()

Returns:

the dim

getData

public com.google.common.collect.Table<java.lang.Integer,java.lang.Integer,java.lang.Double> getData()

Returns:

the data

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object