cc.mallet.classify
Class ClassifierEnsemble

java.lang.Object
  cc.mallet.classify.Classifier
      cc.mallet.classify.ClassifierEnsemble

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable

public class ClassifierEnsemble
extends Classifier

Classifer for an ensemble of classifers, combined with learned weights. The procedure is to obtain the score from each classifier (typically p(y|x)), perform the weighted sum of these scores, then exponentiate the summed score for each class, and re-normalize the resulting per-class scores. In other words, the scores of the ensemble classifiers are treated as input features in a Maximum Entropy classifier.

Author:

Andrew McCallum

See Also:

Serialized Form

Field Summary

Fields inherited from class cc.mallet.classify.Classifier

instancePipe

Constructor Summary

ClassifierEnsemble(Classifier[] classifiers, double[] weights)

Method Summary

Classification

classify(Instance instance)

Methods inherited from class cc.mallet.classify.Classifier

alphabetsMatch, classify, classify, classify, getAccuracy, getAlphabet, getAlphabets, getAverageRank, getF1, getF1, getF1, getFeatureSelection, getInstancePipe, getLabelAlphabet, getPerClassFeatureSelection, getPrecision, getPrecision, getPrecision, getRecall, getRecall, getRecall, print, print

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassifierEnsemble

public ClassifierEnsemble(Classifier[] classifiers,
                          double[] weights)

Method Detail

classify

public Classification classify(Instance instance)

Specified by:

classify in class Classifier