weka.classifiers.meta
Class OrdinalClassClassifier

java.lang.Object
  |
  +--weka.classifiers.Classifier
        |
        +--weka.classifiers.meta.OrdinalClassClassifier

All Implemented Interfaces:

java.lang.Cloneable, OptionHandler, java.io.Serializable

public class OrdinalClassClassifier

extends Classifier

implements OptionHandler

Meta classifier for transforming an ordinal class problem to a series of binary class problems. For more information see:

Frank, E. and Hall, M. (in press). A simple approach to ordinal prediction. 12th European Conference on Machine Learning. Freiburg, Germany.

Valid options are:

-W classname
Specify the full class name of a learner as the basis for the ordinalclassclassifier (required).

Version:

$Revision 1.0 $

Author:

Mark Hall

See Also:

OptionHandler, Serialized Form

Constructor Summary

OrdinalClassClassifier()

Method Summary

void	buildClassifier(Instances insts) Builds the classifiers.
java.lang.String	classifierTipText()
double[]	distributionForInstance(Instance inst) Returns the distribution for an instance.
Classifier	getClassifier() Get the classifier used as the classifier
java.lang.String[]	getOptions() Gets the current settings of the Classifier.
java.lang.String	globalInfo() Returns a string describing this attribute evaluator
java.util.Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(java.lang.String[] argv) Main method for testing this class.
void	setClassifier(Classifier newClassifier) Set the base classifier.
void	setOptions(java.lang.String[] options) Parses a given list of options.
java.lang.String	toString() Prints the classifiers.

Methods inherited from class weka.classifiers.Classifier

classifyInstance, debugTipText, forName, getDebug, makeCopies, setDebug

Methods inherited from class java.lang.Object

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

Constructor Detail

OrdinalClassClassifier

public OrdinalClassClassifier()

Method Detail

globalInfo

public java.lang.String globalInfo()

Returns a string describing this attribute evaluator

Returns:

a description of the evaluator suitable for displaying in the explorer/experimenter gui

buildClassifier

public void buildClassifier(Instances insts)
                     throws java.lang.Exception

Builds the classifiers.

Specified by:

buildClassifier in class Classifier

Parameters:

insts - the training data.

Throws:

java.lang.Exception - if a classifier can't be built

distributionForInstance

public double[] distributionForInstance(Instance inst)
                                 throws java.lang.Exception

Returns the distribution for an instance.

Overrides:

distributionForInstance in class Classifier

Parameters:

inst - the instance to be classified

Returns:

an array containing the estimated membership probabilities of the test instance in each class or the numeric prediction

Throws:

java.lang.Exception - if the distribution can't be computed successfully

listOptions

public java.util.Enumeration listOptions()

Returns an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Overrides:

listOptions in class Classifier

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:

-W classname
Specify the full class name of a learner as the basis for the ordinalclassclassifier (required).

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class Classifier

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 Classifier

Returns:

an array of strings suitable for passing to setOptions

classifierTipText

public java.lang.String classifierTipText()

Returns:

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

setClassifier

public void setClassifier(Classifier newClassifier)

Set the base classifier.

Parameters:

newClassifier - the Classifier to use.

getClassifier

public Classifier getClassifier()

Get the classifier used as the classifier

Returns:

the classifier used as the classifier

toString

public java.lang.String toString()

Prints the classifiers.

Overrides:

toString in class java.lang.Object

main

public static void main(java.lang.String[] argv)

Main method for testing this class.

Parameters:

argv - the options