org.ejml.sparse.csc.decomposition.qr

Class QrLeftLookingDecomposition_DSCC

java.lang.Object

org.ejml.sparse.csc.decomposition.qr.QrLeftLookingDecomposition_DSCC

All Implemented Interfaces:

org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixSparseCSC>, org.ejml.interfaces.decomposition.DecompositionSparseInterface<org.ejml.data.DMatrixSparseCSC>, org.ejml.interfaces.decomposition.QRDecomposition<org.ejml.data.DMatrixSparseCSC>, org.ejml.interfaces.decomposition.QRSparseDecomposition<org.ejml.data.DMatrixSparseCSC>

public class QrLeftLookingDecomposition_DSCC
extends java.lang.Object
implements org.ejml.interfaces.decomposition.QRSparseDecomposition<org.ejml.data.DMatrixSparseCSC>

Left-looking QR decomposition algorithm for sparse matrices. A=Q*R

NOTE: See qr_left on page 71 and cs_qr() in csparse

Constructor Summary

Constructors

Constructor and Description
QrLeftLookingDecomposition_DSCC(ComputePermutation<org.ejml.data.DMatrixSparseCSC> permutation)

Method Summary

Modifier and Type	Method and Description
boolean	decompose(org.ejml.data.DMatrixSparseCSC A)
double[]	getBeta()
double	getBeta(int index)
int[]	getFillPermutation()
org.ejml.data.DMatrixSparseCSC	getQ(org.ejml.data.DMatrixSparseCSC Q, boolean compact)
org.ejml.data.DMatrixSparseCSC	getR()
org.ejml.data.DMatrixSparseCSC	getR(org.ejml.data.DMatrixSparseCSC R, boolean compact)
QrStructuralCounts_DSCC	getStructure()
org.ejml.data.DMatrixSparseCSC	getV()
boolean	inputModified()
boolean	isFillPermutated()
boolean	isSingular()
boolean	isStructureLocked()
void	lockStructure()

Methods inherited from class java.lang.Object

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

Constructor Detail

QrLeftLookingDecomposition_DSCC

public QrLeftLookingDecomposition_DSCC(ComputePermutation<org.ejml.data.DMatrixSparseCSC> permutation)

Method Detail

decompose

public boolean decompose(org.ejml.data.DMatrixSparseCSC A)

Specified by:

decompose in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixSparseCSC>

getQ

public org.ejml.data.DMatrixSparseCSC getQ(org.ejml.data.DMatrixSparseCSC Q,
                                           boolean compact)

Specified by:

getQ in interface org.ejml.interfaces.decomposition.QRDecomposition<org.ejml.data.DMatrixSparseCSC>

getR

public org.ejml.data.DMatrixSparseCSC getR(org.ejml.data.DMatrixSparseCSC R,
                                           boolean compact)

Specified by:

getR in interface org.ejml.interfaces.decomposition.QRDecomposition<org.ejml.data.DMatrixSparseCSC>

inputModified

public boolean inputModified()

Specified by:

inputModified in interface org.ejml.interfaces.decomposition.DecompositionInterface<org.ejml.data.DMatrixSparseCSC>

getStructure

public QrStructuralCounts_DSCC getStructure()

getV

public org.ejml.data.DMatrixSparseCSC getV()

getR

public org.ejml.data.DMatrixSparseCSC getR()

getBeta

public double[] getBeta()

getBeta

public double getBeta(int index)

getFillPermutation

public int[] getFillPermutation()

isFillPermutated

public boolean isFillPermutated()

isSingular

public boolean isSingular()

lockStructure

public void lockStructure()

Specified by:

lockStructure in interface org.ejml.interfaces.decomposition.DecompositionSparseInterface<org.ejml.data.DMatrixSparseCSC>

isStructureLocked

public boolean isStructureLocked()

Specified by:

isStructureLocked in interface org.ejml.interfaces.decomposition.DecompositionSparseInterface<org.ejml.data.DMatrixSparseCSC>