com.mockturtlesolutions.snifflib.linalg

Class AbstractSVDAlgorithm

java.lang.Object

com.mockturtlesolutions.snifflib.linalg.AbstractSVDAlgorithm

All Implemented Interfaces:

SVDAlgorithm

Direct Known Subclasses:

NRSVDAlgorithm

public abstract class AbstractSVDAlgorithm
extends java.lang.Object
implements SVDAlgorithm

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

Constructor Summary

Constructors

Constructor and Description
AbstractSVDAlgorithm()
AbstractSVDAlgorithm(DblMatrix X)

Method Summary

Methods

Modifier and Type	Method and Description
abstract DblMatrix	conditionNumber() Returns the condition number of the decomposed matrix.
abstract DblMatrix	getU() Get an orthonormal basis for the range of the decomposed matrix.
abstract DblMatrix	getV() Get an orthonormal basis for the nullspace of the decomposed matrix.
abstract DblMatrix	getW() Get the singular values of the matrix.
abstract boolean	isSingular() Return true if a singular condition is encountered during.
abstract DblMatrix	nullspace() Return an orthonormal basis for the nullspace of the decomposed matrix.
abstract DblMatrix	solveSystem(DblMatrix Y) Solve a linear system (X*b = Y) returning the coeficients as a DblMatrix.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractSVDAlgorithm

public AbstractSVDAlgorithm(DblMatrix X)

AbstractSVDAlgorithm

public AbstractSVDAlgorithm()

Method Detail

nullspace

public abstract DblMatrix nullspace()

Return an orthonormal basis for the nullspace of the decomposed matrix.

Specified by:

nullspace in interface SVDAlgorithm

getU

public abstract DblMatrix getU()

Get an orthonormal basis for the range of the decomposed matrix.

Specified by:

getU in interface SVDAlgorithm

getV

public abstract DblMatrix getV()

Get an orthonormal basis for the nullspace of the decomposed matrix.

Specified by:

getV in interface SVDAlgorithm

getW

public abstract DblMatrix getW()

Get the singular values of the matrix.

Specified by:

getW in interface SVDAlgorithm

isSingular

public abstract boolean isSingular()

Return true if a singular condition is encountered during.

Specified by:

isSingular in interface SVDAlgorithm

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 SVDAlgorithm

conditionNumber

public abstract DblMatrix conditionNumber()

Returns the condition number of the decomposed matrix. The condition number is the ratio of the largest to smallest singular values.

Specified by:

conditionNumber in interface SVDAlgorithm