Package edu.cmu.tetrad.sem

Class SemUpdater

java.lang.Object

edu.cmu.tetrad.sem.SemUpdater

All Implemented Interfaces:

TetradSerializable, Serializable

public class SemUpdater
extends Object
implements TetradSerializable

Calculates updated structural equation models given evidence of the form X1=x1',...,The main task of such and algorithm is to calculate P(X = x' | evidence), where evidence takes the form of a Proposition over the variables in the Bayes net, possibly with additional information about which variables in the Bayes net have been manipulated.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• Evidence
• Proposition
• Manipulation
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SemUpdater(SemIm semIm)	Constructor for SemUpdater.

Method Summary

Modifier and Type	Method	Description
SemEvidence	getEvidence()	Getter for the field evidence.
Graph	getManipulatedGraph()	getManipulatedGraph.
SemIm	getManipulatedSemIm()	getManipulatedSemIm.
SemIm	getSemIm()	Getter for the field semIm.
SemIm	getUpdatedSemIm()	See http://en.wikipedia.org/wiki/Multivariate_normal_distribution.
static SemUpdater	serializableInstance()	Generates a simple exemplar of this class to test serialization.
void	setEvidence(SemEvidence evidence)	Sets new evidence for the updater.

Methods inherited from class java.lang.Object

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

Constructor Details

SemUpdater

public SemUpdater(SemIm semIm)

Constructor for SemUpdater.

Parameters:

semIm - a SemIm object

Method Details

serializableInstance

public static SemUpdater serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

a SemUpdater object

getEvidence

public SemEvidence getEvidence()

Getter for the field evidence.

Returns:

a SemEvidence object

setEvidence

public void setEvidence(SemEvidence evidence)

Sets new evidence for the updater. Once this is called, old updating results should not longer be available.

Parameters:

evidence - a SemEvidence object

getSemIm

public SemIm getSemIm()

Getter for the field semIm.

Returns:

the Bayes instantiated model that is being updated.

getUpdatedSemIm

public SemIm getUpdatedSemIm()

See http://en.wikipedia.org/wiki/Multivariate_normal_distribution.

Returns:

a SemIm object

getManipulatedGraph

public Graph getManipulatedGraph()

getManipulatedGraph.

Returns:

a Graph object

getManipulatedSemIm

public SemIm getManipulatedSemIm()

getManipulatedSemIm.

Returns:

a SemIm object