Package edu.cmu.tetrad.bayes

Class Evidence

java.lang.Object

edu.cmu.tetrad.bayes.Evidence

All Implemented Interfaces:

TetradSerializable, Serializable

public final class Evidence
extends Object
implements TetradSerializable

Stores information for a variable source about evidence we have for each variable as well as whether each variable has been manipulated.

Version:

$Id: $Id

Author:

josephramsey

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Evidence(Evidence evidence)	Copy constructor.
Evidence(Evidence evidence, VariableSource variableSource)	Constructor for Evidence.
Evidence(Proposition proposition)	Wraps the proposition.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
String	getCategory(Node node, int j)	getCategory.
int	getCategoryIndex(String nodeName, String category)	getCategoryIndex.
Node	getNode(int nodeIndex)	getNode.
int	getNodeIndex(String nodeName)	getNodeIndex.
int	getNumCategories(int variable)	getNumCategories.
int	getNumNodes()	getNumNodes.
Proposition	getProposition()	Getter for the field proposition.
DiscreteVariable	getVariable(String nodeName)	getVariable.
List<Node>	getVariablesInEvidence()	getVariablesInEvidence.
VariableSource	getVariableSource()	getVariableSource.
int	hashCode()	hashCode.
boolean	hasNoEvidence(int variable)	hasNoEvidence.
boolean	isIncompatibleWith(VariableSource variableSource)	Returna true just in case this evidence has a list of variables equal to those of the given variable source.
boolean	isManipulated(int nodeIndex)	isManipulated.
static Evidence	serializableInstance()	Generates a simple exemplar of this class to test serialization.
void	setManipulated(int nodeIndex, boolean manipulated)	setManipulated.
static Evidence	tautology(VariableSource variableSource)	tautology.
String	toString()	toString.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Evidence

public Evidence(Evidence evidence)

Copy constructor.

Parameters:

evidence - a Evidence object

Evidence

public Evidence(Proposition proposition)

Wraps the proposition. The Bayes IM and manipulation will be null.

Parameters:

proposition - a Proposition object

Evidence

public Evidence(Evidence evidence,
 VariableSource variableSource)

Constructor for Evidence.

Parameters:

evidence - a Evidence object

variableSource - a VariableSource object

Method Details

tautology

public static Evidence tautology(VariableSource variableSource)

tautology.

Parameters:

variableSource - a VariableSource object

Returns:

a Evidence object

serializableInstance

public static Evidence serializableInstance()

Generates a simple exemplar of this class to test serialization.

Returns:

a Evidence object

getVariableSource

public VariableSource getVariableSource()

getVariableSource.

Returns:

the Bayes IM that this is evidence for.

getNodeIndex

public int getNodeIndex(String nodeName)

getNodeIndex.

Parameters:

nodeName - a String object

Returns:

a int

getCategoryIndex

public int getCategoryIndex(String nodeName,
 String category)

getCategoryIndex.

Parameters:

nodeName - a String object

category - a String object

Returns:

a int

getNumNodes

public int getNumNodes()

getNumNodes.

Returns:

a int

getNode

public Node getNode(int nodeIndex)

getNode.

Parameters:

nodeIndex - a int

Returns:

a Node object

getVariable

public DiscreteVariable getVariable(String nodeName)

getVariable.

Parameters:

nodeName - a String object

Returns:

a DiscreteVariable object

getNumCategories

public int getNumCategories(int variable)

getNumCategories.

Parameters:

variable - a int

Returns:

a int

getProposition

public Proposition getProposition()

Getter for the field proposition.

Returns:

a Proposition object

isManipulated

public boolean isManipulated(int nodeIndex)

isManipulated.

Parameters:

nodeIndex - a int

Returns:

a boolean

setManipulated

public void setManipulated(int nodeIndex,
 boolean manipulated)

setManipulated.

Parameters:

nodeIndex - a int

manipulated - a boolean

toString

public String toString()

toString.

Overrides:

toString in class Object

Returns:

a String object

hasNoEvidence

public boolean hasNoEvidence(int variable)

hasNoEvidence.

Parameters:

variable - a int

Returns:

a boolean

getVariablesInEvidence

public List<Node> getVariablesInEvidence()

getVariablesInEvidence.

Returns:

the variable for which there is evidence.

getCategory

public String getCategory(Node node,
 int j)

getCategory.

Parameters:

node - a Node object

j - a int

Returns:

a String object

isIncompatibleWith

public boolean isIncompatibleWith(VariableSource variableSource)

Returna true just in case this evidence has a list of variables equal to those of the given variable source.

Parameters:

variableSource - a VariableSource object

Returns:

a boolean

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

hashCode.

Overrides:

hashCode in class Object

Returns:

a int