weka.classifiers

Class MultipleClassifiersCombiner

java.lang.Object

weka.classifiers.AbstractClassifier

weka.classifiers.MultipleClassifiersCombiner

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Classifier, BatchPredictor, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler

Direct Known Subclasses:

ParallelMultipleClassifiersCombiner, RandomizableMultipleClassifiersCombiner

public abstract class MultipleClassifiersCombiner
extends AbstractClassifier

Abstract utility class for handling settings common to meta classifiers that build an ensemble from multiple classifiers.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Classifier[]	m_Classifiers Array for storing the generated base classifiers.

Fields inherited from class weka.classifiers.AbstractClassifier

BATCH_SIZE_DEFAULT, m_BatchSize, m_Debug, m_DoNotCheckCapabilities, m_numDecimalPlaces, NUM_DECIMAL_PLACES_DEFAULT

Constructor Summary

Constructors

Constructor and Description
MultipleClassifiersCombiner()

Method Summary

Modifier and Type	Method and Description
java.lang.String	classifiersTipText() Returns the tip text for this property
Capabilities	getCapabilities() Returns combined capabilities of the base classifiers, i.e., the capabilities all of them have in common.
Classifier	getClassifier(int index) Gets a single classifier from the set of available classifiers.
Classifier[]	getClassifiers() Gets the list of possible classifers to choose from.
protected java.lang.String	getClassifierSpec(int index) Gets the classifier specification string, which contains the class name of the classifier and any options to the classifier
java.lang.String[]	getOptions() Gets the current settings of the Classifier.
java.util.Enumeration<Option>	listOptions() Returns an enumeration describing the available options
void	postExecution() Perform any teardown stuff that might need to happen after execution.
void	preExecution() Perform any setup stuff that might need to happen before commandline execution.
void	setClassifiers(Classifier[] classifiers) Sets the list of possible classifers to choose from.
void	setOptions(java.lang.String[] options) Parses a given list of options.

Methods inherited from class weka.classifiers.AbstractClassifier

batchSizeTipText, classifyInstance, debugTipText, distributionForInstance, distributionsForInstances, doNotCheckCapabilitiesTipText, forName, getBatchSize, getDebug, getDoNotCheckCapabilities, getNumDecimalPlaces, getRevision, implementsMoreEfficientBatchPrediction, makeCopies, makeCopy, numDecimalPlacesTipText, run, runClassifier, setBatchSize, setDebug, setDoNotCheckCapabilities, setNumDecimalPlaces

Methods inherited from class java.lang.Object

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

Methods inherited from interface weka.classifiers.Classifier

buildClassifier

Field Detail

m_Classifiers

protected Classifier[] m_Classifiers

Array for storing the generated base classifiers.

Constructor Detail

MultipleClassifiersCombiner

public MultipleClassifiersCombiner()

Method Detail

listOptions

public java.util.Enumeration<Option> listOptions()

Returns an enumeration describing the available options

Specified by:

listOptions in interface OptionHandler

Overrides:

listOptions in class AbstractClassifier

Returns:

an enumeration of all the available options

setOptions

public void setOptions(java.lang.String[] options)
                throws java.lang.Exception

Parses a given list of options. Valid options are:

-B classifierstring
Classifierstring should contain the full class name of a scheme included for selection followed by options to the classifier (required, option should be used once for each classifier).

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class AbstractClassifier

Parameters:

options - the list of options as an array of strings

Throws:

java.lang.Exception - if an option is not supported

getOptions

public java.lang.String[] getOptions()

Gets the current settings of the Classifier.

Specified by:

getOptions in interface OptionHandler

Overrides:

getOptions in class AbstractClassifier

Returns:

an array of strings suitable for passing to setOptions

classifiersTipText

public java.lang.String classifiersTipText()

Returns the tip text for this property

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

setClassifiers

public void setClassifiers(Classifier[] classifiers)

Sets the list of possible classifers to choose from.

Parameters:

classifiers - an array of classifiers with all options set.

getClassifiers

public Classifier[] getClassifiers()

Gets the list of possible classifers to choose from.

Returns:

the array of Classifiers

getClassifier

public Classifier getClassifier(int index)

Gets a single classifier from the set of available classifiers.

Parameters:

index - the index of the classifier wanted

Returns:

the Classifier

getClassifierSpec

protected java.lang.String getClassifierSpec(int index)

Gets the classifier specification string, which contains the class name of the classifier and any options to the classifier

Parameters:

index - the index of the classifier string to retrieve, starting from 0.

Returns:

the classifier string, or the empty string if no classifier has been assigned (or the index given is out of range).

getCapabilities

public Capabilities getCapabilities()

Returns combined capabilities of the base classifiers, i.e., the capabilities all of them have in common.

Specified by:

getCapabilities in interface Classifier

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class AbstractClassifier

Returns:

the capabilities of the base classifiers

See Also:

Capabilities

preExecution

public void preExecution()
                  throws java.lang.Exception

Description copied from class: AbstractClassifier

Perform any setup stuff that might need to happen before commandline execution. Subclasses should override if they need to do something here

Specified by:

preExecution in interface CommandlineRunnable

Overrides:

preExecution in class AbstractClassifier

Throws:

java.lang.Exception - if a problem occurs during setup

postExecution

public void postExecution()
                   throws java.lang.Exception

Description copied from class: AbstractClassifier

Perform any teardown stuff that might need to happen after execution. Subclasses should override if they need to do something here

Specified by:

postExecution in interface CommandlineRunnable

Overrides:

postExecution in class AbstractClassifier

Throws:

java.lang.Exception - if a problem occurs during teardown