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

Field Summary

protected double[]	_diag
protected double[][]	_xx

Constructor Summary

Gram.Cholesky(Gram gram)

Method Summary

boolean	isSPD()
void	setSPD(boolean b)
void	solve(double[] y) Find solution to A*x = y.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

_xx

protected final double[][] _xx

_diag

protected final double[] _diag

Constructor Detail

Gram.Cholesky

public Gram.Cholesky(Gram gram)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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)