Package org.ddogleg.clustering.gmm

Class GaussianLikelihoodManager.Likelihood

java.lang.Object

org.ddogleg.clustering.gmm.GaussianLikelihoodManager.Likelihood

Enclosing class:

GaussianLikelihoodManager

public class GaussianLikelihoodManager.Likelihood
extends Object

Likelihood for a specific Gaussian

Field Summary

Fields

Modifier and Type	Field	Description
double	chisq
GaussianGmm_F64	gaussian
DMatrixRMaj	invCov
double	leftSide
boolean	valid

Constructor Summary

Constructors

Constructor	Description
Likelihood(int N)

Method Summary

Modifier and Type	Method	Description
double	getChisq()
double	likelihood(double[] point)	Computes p(x|mu,Sigma) where x is the point.
void	setGaussian(GaussianGmm_F64 gaussian)	Precomputes the parts of the likelihood functions which can be.

Methods inherited from class java.lang.Object

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

Field Details

gaussian

public GaussianGmm_F64 gaussian

invCov

public DMatrixRMaj invCov

leftSide

public double leftSide

chisq

public double chisq

valid

public boolean valid

Constructor Details

Likelihood

public Likelihood(int N)

Method Details

setGaussian

public void setGaussian(GaussianGmm_F64 gaussian)

Precomputes the parts of the likelihood functions which can be. Matrix inversion and determinant are the main parts.

likelihood

public double likelihood(double[] point)

Computes p(x|mu,Sigma) where x is the point. THe chi-square value is also computed.

Parameters:

point - The point being examined

Returns:

likelihood of the point

getChisq

public double getChisq()