weka.classifiers.meta
Class RandomCommittee

java.lang.Object
  |
  +--weka.classifiers.Classifier
        |
        +--weka.classifiers.SingleClassifierEnhancer
              |
              +--weka.classifiers.IteratedSingleClassifierEnhancer
                    |
                    +--weka.classifiers.RandomizableIteratedSingleClassifierEnhancer
                          |
                          +--weka.classifiers.meta.RandomCommittee

All Implemented Interfaces:

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

public class RandomCommittee

extends RandomizableIteratedSingleClassifierEnhancer

implements WeightedInstancesHandler

Class for creating a committee of random classifiers. The base classifier (that forms the committee members) needs to implement the Randomizable interface. Valid options are:

-W classname
Specify the full class name of a base classifier as the basis for the random committee (required).

-I num
Set the number of committee members (default 10).

-S seed
Random number seed for the randomization process (default 1).

Options after -- are passed to the designated classifier.

Version:

$Revision: 1.5 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

RandomCommittee()
Constructor.

Method Summary

void	buildClassifier(Instances data) Builds the committee of randomizable classifiers.
double[]	distributionForInstance(Instance instance) Calculates the class membership probabilities for the given test instance.
java.lang.String	globalInfo() Returns a string describing classifier
static void	main(java.lang.String[] argv) Main method for testing this class.
java.lang.String	toString() Returns description of the committee.

Methods inherited from class weka.classifiers.RandomizableIteratedSingleClassifierEnhancer

getOptions, getSeed, listOptions, seedTipText, setOptions, setSeed

Methods inherited from class weka.classifiers.IteratedSingleClassifierEnhancer

getNumIterations, numIterationsTipText, setNumIterations

Methods inherited from class weka.classifiers.SingleClassifierEnhancer

classifierTipText, getClassifier, setClassifier

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

RandomCommittee

public RandomCommittee()

Constructor.

Method Detail

globalInfo

public java.lang.String globalInfo()

Returns a string describing classifier

Returns:

a description suitable for displaying in the explorer/experimenter gui

buildClassifier

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

Builds the committee of randomizable classifiers.

Overrides:

buildClassifier in class IteratedSingleClassifierEnhancer

Parameters:

data - the training data to be used for generating the bagged classifier.

Throws:

java.lang.Exception - if the classifier could not be built successfully

distributionForInstance

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

Calculates the class membership probabilities for the given test instance.

Overrides:

distributionForInstance in class Classifier

Parameters:

instance - the instance to be classified

Returns:

preedicted class probability distribution

Throws:

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

toString

public java.lang.String toString()

Returns description of the committee.

Overrides:

toString in class java.lang.Object

Returns:

description of the committee as a string

main

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

Main method for testing this class.

Parameters:

argv - the options