weka.associations

Class AbstractAssociator

java.lang.Object

weka.associations.AbstractAssociator

All Implemented Interfaces:

Serializable, Cloneable, Associator, CapabilitiesHandler, RevisionHandler

Direct Known Subclasses:

Apriori, FPGrowth, GeneralizedSequentialPatterns, PredictiveApriori, SingleAssociatorEnhancer, Tertius

public abstract class AbstractAssociator
extends Object
implements Cloneable, Associator, Serializable, CapabilitiesHandler, RevisionHandler

Abstract scheme for learning associations. All schemes for learning associations extend this class

Version:

$Revision: 5503 $

Author:

Eibe Frank ([email protected])

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractAssociator()

Method Summary

Methods

Modifier and Type	Method and Description
static Associator	forName(String associatorName, String[] options) Creates a new instance of a associator given it's class name and (optional) arguments to pass to it's setOptions method.
Capabilities	getCapabilities() Returns the Capabilities of this associator.
String	getRevision() Returns the revision string.
static Associator[]	makeCopies(Associator model, int num) Creates copies of the current associator.
static Associator	makeCopy(Associator model) Creates a deep copy of the given associator using serialization.

Methods inherited from class java.lang.Object

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

Methods inherited from interface weka.associations.Associator

buildAssociations

Constructor Detail

AbstractAssociator

public AbstractAssociator()

Method Detail

forName

public static Associator forName(String associatorName,
                 String[] options)
                          throws Exception

Creates a new instance of a associator given it's class name and (optional) arguments to pass to it's setOptions method. If the associator implements OptionHandler and the options parameter is non-null, the associator will have it's options set.

Parameters:

associatorName - the fully qualified class name of the associator

options - an array of options suitable for passing to setOptions. May be null.

Returns:

the newly created associator, ready for use.

Throws:

Exception - if the associator name is invalid, or the options supplied are not acceptable to the associator

makeCopy

public static Associator makeCopy(Associator model)
                           throws Exception

Creates a deep copy of the given associator using serialization.

Parameters:

model - the associator to copy

Returns:

a deep copy of the associator

Throws:

Exception - if an error occurs

makeCopies

public static Associator[] makeCopies(Associator model,
                      int num)
                               throws Exception

Creates copies of the current associator. Note that this method now uses Serialization to perform a deep copy, so the Associator object must be fully Serializable. Any currently built model will now be copied as well.

Parameters:

model - an example associator to copy

num - the number of associators copies to create.

Returns:

an array of associators.

Throws:

Exception - if an error occurs

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this associator. Maximally permissive capabilities are allowed by default. Derived associators should override this method and first disable all capabilities and then enable just those capabilities that make sense for the scheme.

Specified by:

getCapabilities in interface Associator

Specified by:

getCapabilities in interface CapabilitiesHandler

Returns:

the capabilities of this object

See Also:

Capabilities

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision