Package weka.classifiers.bayes.net

Class ParentSet

java.lang.Object

weka.classifiers.bayes.net.ParentSet

All Implemented Interfaces:

Serializable, RevisionHandler

public class ParentSet
extends Object
implements Serializable, RevisionHandler

Helper class for Bayes Network classifiers. Provides datastructures to represent a set of parents in a graph.

Version:

$Revision: 8034 $

Author:

Remco Bouckaert (rrb@xm.co.nz)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ParentSet()	default constructor
ParentSet(int nMaxNrOfParents)	constructor
ParentSet(ParentSet other)	copy constructor

Method Summary

Modifier and Type	Method	Description
void	addParent(int nParent, int iParent, Instances _Instances)	Add parent to parent set at specific location and update internals (specifically the cardinality of the parent set)
void	addParent(int nParent, Instances _Instances)	Add parent to parent set and update internals (specifically the cardinality of the parent set)
boolean	contains(int iNode)	test if node is contained in parent set
void	copy(ParentSet other)	Copy makes current parents set equal to other parent set
void	deleteLastParent(Instances _Instances)	Delete last added parent from parent set and update internals (specifically the cardinality of the parent set)
int	deleteParent(int nParent, Instances _Instances)	delete node from parent set
int	getCardinalityOfParents()	returns cardinality of parents
int	getFreshCardinalityOfParents(Instances _Instances)	returns cardinality of parents after recalculation
int	getNrOfParents()	returns number of parents
int	getParent(int iParent)	returns index parent of parent specified by index
int[]	getParents()
String	getRevision()	Returns the revision string.
void	maxParentSetSize(int nSize)	reserve memory for parent set
void	SetParent(int iParent, int nNode)	sets index parent of parent specified by index

Methods inherited from class java.lang.Object

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

Constructor Details

ParentSet

public ParentSet()

default constructor

ParentSet

public ParentSet(int nMaxNrOfParents)

constructor

Parameters:

nMaxNrOfParents - upper bound on nr of parents

ParentSet

public ParentSet(ParentSet other)

copy constructor

Parameters:

other - other parent set

Method Details

getParent

public int getParent(int iParent)

returns index parent of parent specified by index

Parameters:

iParent - Index of parent

Returns:

index of parent

getParents

public int[] getParents()

SetParent

public void SetParent(int iParent,
 int nNode)

sets index parent of parent specified by index

Parameters:

iParent - Index of parent

nNode - index of the node that becomes parent

getNrOfParents

public int getNrOfParents()

returns number of parents

Returns:

number of parents

contains

public boolean contains(int iNode)

test if node is contained in parent set

Parameters:

iNode - node to test for

Returns:

number of parents

getCardinalityOfParents

public int getCardinalityOfParents()

returns cardinality of parents

Returns:

the cardinality

getFreshCardinalityOfParents

public int getFreshCardinalityOfParents(Instances _Instances)

returns cardinality of parents after recalculation

Returns:

the cardinality

maxParentSetSize

public void maxParentSetSize(int nSize)

reserve memory for parent set

Parameters:

nSize - maximum size of parent set to reserver memory for

addParent

public void addParent(int nParent,
 Instances _Instances)

Add parent to parent set and update internals (specifically the cardinality of the parent set)

Parameters:

nParent - parent to add

_Instances - used for updating the internals

addParent

public void addParent(int nParent,
 int iParent,
 Instances _Instances)

Add parent to parent set at specific location and update internals (specifically the cardinality of the parent set)

Parameters:

nParent - parent to add

iParent - location to add parent in parent set

_Instances - used for updating the internals

deleteParent

public int deleteParent(int nParent,
 Instances _Instances)

delete node from parent set

Parameters:

nParent - node number of the parent to delete

_Instances - data set

Returns:

location of the parent in the parent set. This information can be used to restore the parent set using the addParent method.

deleteLastParent

public void deleteLastParent(Instances _Instances)

Delete last added parent from parent set and update internals (specifically the cardinality of the parent set)

Parameters:

_Instances - used for updating the internals

copy

public void copy(ParentSet other)

Copy makes current parents set equal to other parent set

Parameters:

other - : parent set to make a copy from

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision