aima.core.probability.bayes.impl

Class AbstractNode

java.lang.Object

aima.core.probability.bayes.impl.AbstractNode

All Implemented Interfaces:

Node

Direct Known Subclasses:

FullCPTNode

public abstract class AbstractNode
extends java.lang.Object
implements Node

Abstract base implementation of the Node interface.

Author:

Ciaran O'Reilly, Ravi Mohan

Constructor Summary

Constructors

Constructor and Description
AbstractNode(RandomVariable var)
AbstractNode(RandomVariable var, Node... parents)

Method Summary

Modifier and Type	Method and Description
protected void	addChild(Node childNode)
boolean	equals(java.lang.Object o)
java.util.Set<Node>	getChildren()
abstract ConditionalProbabilityDistribution	getCPD()
java.util.Set<Node>	getMarkovBlanket() Get this Node's Markov Blanket: 'A node is conditionally independent of all other nodes in the network, given its parents, children, and children's parents - that is, given its MARKOV BLANKET (AIMA3e pg, 517).
java.util.Set<Node>	getParents()
RandomVariable	getRandomVariable()
int	hashCode()
boolean	isRoot()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractNode

public AbstractNode(RandomVariable var)

AbstractNode

public AbstractNode(RandomVariable var,
                    Node... parents)

Method Detail

getRandomVariable

public RandomVariable getRandomVariable()

Specified by:

getRandomVariable in interface Node

Returns:

the Random Variable this Node is for/on.

isRoot

public boolean isRoot()

Specified by:

isRoot in interface Node

Returns:

true if this Node has no parents.

See Also:

Node.getParents()

getParents

public java.util.Set<Node> getParents()

Specified by:

getParents in interface Node

Returns:

the parent Nodes for this Node.

getChildren

public java.util.Set<Node> getChildren()

Specified by:

getChildren in interface Node

Returns:

the children Nodes for this Node.

getMarkovBlanket

public java.util.Set<Node> getMarkovBlanket()

Description copied from interface: Node

Get this Node's Markov Blanket:
'A node is conditionally independent of all other nodes in the network, given its parents, children, and children's parents - that is, given its MARKOV BLANKET (AIMA3e pg, 517).

Specified by:

getMarkovBlanket in interface Node

Returns:

this Node's Markov Blanket.

getCPD

public abstract ConditionalProbabilityDistribution getCPD()

Specified by:

getCPD in interface Node

Returns:

the Conditional Probability Distribution associated with this Node.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

addChild

protected void addChild(Node childNode)