hex.gram

Class Gram.Cholesky

java.lang.Object

hex.gram.Gram.Cholesky

Enclosing class:

Gram

public static final class Gram.Cholesky
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Gram.Cholesky.DelayedTask
class	Gram.Cholesky.ParSolver

Field Summary

Fields

Modifier and Type	Field and Description
protected double[]	_diag
double[][]	_xx

Constructor Summary

Constructors

Constructor and Description
Gram.Cholesky(double[][] xx, double[] diag)
Gram.Cholesky(Gram gram)

Method Summary

Methods

Modifier and Type	Method and Description
double[][]	getL()
double[][]	getXX()
boolean	isSPD()
Gram.Cholesky.ParSolver	parSolver(jsr166y.CountedCompleter cmp, double[] y, int iBlock, int rBlock)
void	setSPD(boolean b)
void	solve(double[] y) Find solution to A*x = y.
double	sparseness()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

_xx

public final double[][] _xx

_diag

protected final double[] _diag

Constructor Detail

Gram.Cholesky

public Gram.Cholesky(double[][] xx,
             double[] diag)

Gram.Cholesky

public Gram.Cholesky(Gram gram)

Method Detail

getXX

public double[][] getXX()

getL

public double[][] getL()

sparseness

public double sparseness()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

parSolver

public Gram.Cholesky.ParSolver parSolver(jsr166y.CountedCompleter cmp,
                                double[] y,
                                int iBlock,
                                int rBlock)

solve

public final void solve(double[] y)

Find solution to A*x = y. Result is stored in the y input vector. May throw NonSPDMatrix exception in case Gram is not positive definite.

Parameters:

y -

isSPD

public final boolean isSPD()

setSPD

public final void setSPD(boolean b)