Package edu.cmu.tetrad.search.utils

Class PermutationMatrixPair

java.lang.Object

edu.cmu.tetrad.search.utils.PermutationMatrixPair

public class PermutationMatrixPair
extends Object

Stores a matrix together with a row and column permutation. if either of these is null in the constructor, the identity permtuation will be used. Returns the matrix permuted by these row and column permutations.

Author:

josephramsey

See Also:

• IcaLingam
• IcaLingD

Constructor Summary

Constructors

Constructor	Description
PermutationMatrixPair(Matrix M, int[] rowPerm, int[] colPerm)	Constructs with a given matrix M and a row and column permutation (which may be null).

Method Summary

Modifier and Type	Method	Description
int[]	getColPerm()
Matrix	getPermutedMatrix()	Returns W, permuted rowwise by the permutation passed in through the constructor.
int[]	getRowPerm()
String	toString()	Prints a string representation of this.

Methods inherited from class java.lang.Object

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

Constructor Details

PermutationMatrixPair

public PermutationMatrixPair(Matrix M,
 int[] rowPerm,
 int[] colPerm)

Constructs with a given matrix M and a row and column permutation (which may be null).

Parameters:

M - The matrix to be permuted.

rowPerm - The row permutation for M; if null the identity permutation ([0 1 2...#rows]) will be used.

colPerm - The row permutation for M; if null the identity permutation ([0 1 2...#cols]) will be used.

Method Details

getPermutedMatrix

public Matrix getPermutedMatrix()

Returns W, permuted rowwise by the permutation passed in through the constructor.

Returns:

The matrix, permuted columnwise and rowwise, by the specified column and row permutations.

getRowPerm

public int[] getRowPerm()

Returns:

The row permutation.

getColPerm

public int[] getColPerm()

Returns:

The column permutation.

toString

public String toString()

Prints a string representation of this.

Overrides:

toString in class Object

Returns:

The row and columns permutations, followed by the permuted matrix.