net.myrrix.common.math

Class CommonsMathLinearSystemSolver

java.lang.Object

net.myrrix.common.math.CommonsMathLinearSystemSolver

public final class CommonsMathLinearSystemSolver
extends Object

An implementation based on RRQRDecomposition from Commons Math.

Since:

1.0

Author:

Sean Owen

Field Summary

Fields

Modifier and Type	Field and Description
static double	SINGULARITY_THRESHOLD Threshold below which a value is considered 0 for purposes of deciding that a matrix's singular value is 0 and therefore is singular

Constructor Summary

Constructors

Constructor and Description
CommonsMathLinearSystemSolver()

Method Summary

Methods

Modifier and Type	Method and Description
Solver	getSolver(org.apache.commons.math3.linear.RealMatrix M)
boolean	isNonSingular(org.apache.commons.math3.linear.RealMatrix M)

Methods inherited from class java.lang.Object

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

Field Detail

SINGULARITY_THRESHOLD

public static final double SINGULARITY_THRESHOLD

Threshold below which a value is considered 0 for purposes of deciding that a matrix's singular value is 0 and therefore is singular

Constructor Detail

CommonsMathLinearSystemSolver

public CommonsMathLinearSystemSolver()

Method Detail

getSolver

public Solver getSolver(org.apache.commons.math3.linear.RealMatrix M)

Returns:

a Solver for A, which can solve Ax = b for x, given b. Note that this only works for symmetric matrices!

isNonSingular

public boolean isNonSingular(org.apache.commons.math3.linear.RealMatrix M)

Returns:

true if A appears to be invertible (getSolver(RealMatrix) would succeed). Note that this only works for symmetric matrices!