Package edu.cmu.tetrad.bayes

Class CptInvariantMarginalCalculator

java.lang.Object

edu.cmu.tetrad.bayes.CptInvariantMarginalCalculator

All Implemented Interfaces:

TetradSerializable, Serializable

public final class CptInvariantMarginalCalculator
extends Object
implements TetradSerializable

Calculates marginals of the form P(V=v') for an updated Bayes net for purposes of the CPT Invariant Updater.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CptInvariantMarginalCalculator(BayesIm bayesIm, Evidence evidence)	Constructs a new marginal calculator for the given updated Bayes IM.

Method Summary

Modifier and Type	Method	Description
double	getMarginal(int variable, int category)	getMarginal.
UpdatedBayesIm	getUpdatedBayesIm()	Getter for the field updatedBayesIm.
static CptInvariantMarginalCalculator	serializableInstance()	Generates a simple exemplar of this class to test serialization.

Methods inherited from class java.lang.Object

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

Constructor Details

CptInvariantMarginalCalculator

public CptInvariantMarginalCalculator(BayesIm bayesIm,
 Evidence evidence)

Constructs a new marginal calculator for the given updated Bayes IM. It is assumed that the first BayesIm encountered on calling the getParentIm() method recursively is the Bayes IM with respect to which conjunctions of the form P(V1=v1' and V2=v2' and ... and Vn=vn') should be calculated.

Parameters:

bayesIm - a BayesIm object

evidence - a Evidence object

Method Details

serializableInstance

public static CptInvariantMarginalCalculator serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

a CptInvariantMarginalCalculator object

getMarginal

public double getMarginal(int variable,
 int category)

getMarginal.

Parameters:

variable - a int

category - a int

Returns:

P(variable = category).

getUpdatedBayesIm

public UpdatedBayesIm getUpdatedBayesIm()

Getter for the field updatedBayesIm.

Returns:

a UpdatedBayesIm object