Package weka.classifiers.meta
Class RandomCommittee
- java.lang.Object
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,CapabilitiesHandler
,OptionHandler
,Randomizable
,RevisionHandler
,WeightedInstancesHandler
public class RandomCommittee extends RandomizableIteratedSingleClassifierEnhancer implements WeightedInstancesHandler
Class for building an ensemble of randomizable base classifiers. Each base classifiers is built using a different random number seed (but based one the same data). The final prediction is a straight average of the predictions generated by the individual base classifiers. Valid options are:-S <num> Random number seed. (default 1)
-I <num> Number of iterations. (default 10)
-D If set, classifier is run in debug mode and may output additional info to the console
-W Full name of base classifier. (default: weka.classifiers.trees.RandomTree)
Options specific to classifier weka.classifiers.trees.RandomTree:
-K <number of attributes> Number of attributes to randomly investigate (<1 = int(log(#attributes)+1)).
-M <minimum number of instances> Set minimum number of instances per leaf.
-S <num> Seed for random number generator. (default 1)
-depth <num> The maximum depth of the tree, 0 for unlimited. (default 0)
-D If set, classifier is run in debug mode and may output additional info to the console
Options after -- are passed to the designated classifier.- Version:
- $Revision: 1.13 $
- Author:
- Eibe Frank (eibe@cs.waikato.ac.nz)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description RandomCommittee()
Constructor.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description 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
getRevision()
Returns the revision string.java.lang.String
globalInfo()
Returns a string describing classifierstatic 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
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Methods inherited from class weka.classifiers.IteratedSingleClassifierEnhancer
getNumIterations, numIterationsTipText, setNumIterations
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Methods inherited from class weka.classifiers.SingleClassifierEnhancer
classifierTipText, getCapabilities, getClassifier, setClassifier
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Methods inherited from class weka.classifiers.Classifier
classifyInstance, debugTipText, forName, getDebug, makeCopies, makeCopy, setDebug
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Method Detail
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globalInfo
public java.lang.String globalInfo()
Returns a string describing classifier- Returns:
- a description suitable for displaying in the explorer/experimenter gui
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buildClassifier
public void buildClassifier(Instances data) throws java.lang.Exception
Builds the committee of randomizable classifiers.- Overrides:
buildClassifier
in classIteratedSingleClassifierEnhancer
- 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
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distributionForInstance
public double[] distributionForInstance(Instance instance) throws java.lang.Exception
Calculates the class membership probabilities for the given test instance.- Overrides:
distributionForInstance
in classClassifier
- Parameters:
instance
- the instance to be classified- Returns:
- preedicted class probability distribution
- Throws:
java.lang.Exception
- if distribution can't be computed successfully
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toString
public java.lang.String toString()
Returns description of the committee.- Overrides:
toString
in classjava.lang.Object
- Returns:
- description of the committee as a string
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getRevision
public java.lang.String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceRevisionHandler
- Overrides:
getRevision
in classClassifier
- Returns:
- the revision
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main
public static void main(java.lang.String[] argv)
Main method for testing this class.- Parameters:
argv
- the options
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