com.mockturtlesolutions.snifflib.linalg

Class AbstractQRAlgorithm

java.lang.Object

com.mockturtlesolutions.snifflib.linalg.AbstractQRAlgorithm

All Implemented Interfaces:

QRAlgorithm

Direct Known Subclasses:

ModiClarkeQRAlgorithm, NRQRAlgorithm, SparseHHQRAlgorithm

public abstract class AbstractQRAlgorithm
extends java.lang.Object
implements QRAlgorithm

An abstract class to provide methods (usually abstract) for whatever common features are among various QRalgorithm implementations.

Constructor Summary

Constructors

Constructor and Description
AbstractQRAlgorithm(DblMatrix X)

Method Summary

Methods

Modifier and Type	Method and Description
abstract DblMatrix	getFullQ() Get the orthogonal matrix Q of the QR decomposition.
abstract DblMatrix	getFullR() Get the lower triangular matrix R of the QR decomposition.
abstract DblMatrix	getQ() Get the orthogonal matrix Q of the QR decomposition.
abstract DblMatrix	getR() Get the lower triangular matrix R of the QR decomposition.
abstract boolean	isSingular() Return true if a singular condition is encountered during.
abstract DblMatrix	QtransDot(DblMatrix X) Multiply input by transpose of Q.
abstract DblMatrix	solveSystem(DblMatrix Y) Solve a linear system (X*b = Y) returning the coeficients as a DblMatrix.
abstract void	update() Update the QR decomposition.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractQRAlgorithm

public AbstractQRAlgorithm(DblMatrix X)

Method Detail

QtransDot

public abstract DblMatrix QtransDot(DblMatrix X)

Description copied from interface: QRAlgorithm

Multiply input by transpose of Q.

Specified by:

QtransDot in interface QRAlgorithm

getQ

public abstract DblMatrix getQ()

Description copied from interface: QRAlgorithm

Get the orthogonal matrix Q of the QR decomposition.

Specified by:

getQ in interface QRAlgorithm

getR

public abstract DblMatrix getR()

Get the lower triangular matrix R of the QR decomposition.

Specified by:

getR in interface QRAlgorithm

getFullQ

public abstract DblMatrix getFullQ()

Description copied from interface: QRAlgorithm

Get the orthogonal matrix Q of the QR decomposition.

Specified by:

getFullQ in interface QRAlgorithm

getFullR

public abstract DblMatrix getFullR()

Get the lower triangular matrix R of the QR decomposition.

Specified by:

getFullR in interface QRAlgorithm

update

public abstract void update()

Update the QR decomposition.

Specified by:

update in interface QRAlgorithm

isSingular

public abstract boolean isSingular()

Return true if a singular condition is encountered during.

Specified by:

isSingular in interface QRAlgorithm

solveSystem

public abstract DblMatrix solveSystem(DblMatrix Y)

Solve a linear system (X*b = Y) returning the coeficients as a DblMatrix.

Specified by:

solveSystem in interface QRAlgorithm