Package cc.mallet.classify

Class AdaBoostTrainer

java.lang.Object

cc.mallet.classify.ClassifierTrainer<AdaBoost>

cc.mallet.classify.AdaBoostTrainer

public class AdaBoostTrainer
extends ClassifierTrainer<AdaBoost>

This version of AdaBoost should be used only for binary classification. Use AdaBoost.M2 for multi-class problems.

Robert E. Schapire. "A decision-theoretic generalization of on-line learning and an application to boosting" In Journal of Computer and System Sciences http://www.cs.princeton.edu/~schapire/uncompress-papers.cgi/FreundSc95.ps

Author:

Andrew McCallum mccallum@cs.umass.edu

Nested Class Summary

Nested classes/interfaces inherited from class cc.mallet.classify.ClassifierTrainer

ClassifierTrainer.ByActiveLearning<C extends Classifier>, ClassifierTrainer.ByIncrements<C extends Classifier>, ClassifierTrainer.ByInstanceIncrements<C extends Classifier>, ClassifierTrainer.ByOptimization<C extends Classifier>, ClassifierTrainer.Factory<CT extends ClassifierTrainer<? extends Classifier>>

Field Summary

Fields inherited from class cc.mallet.classify.ClassifierTrainer

finishedTraining, validationSet

Constructor Summary

Constructors

Constructor	Description
AdaBoostTrainer(ClassifierTrainer weakLearner)
AdaBoostTrainer(ClassifierTrainer weakLearner, int numRounds)

Method Summary

Modifier and Type	Method	Description
AdaBoost	getClassifier()
AdaBoost	train(InstanceList trainingList)	Boosting method that resamples instances using their weights

Methods inherited from class cc.mallet.classify.ClassifierTrainer

getValidationInstances, isFinishedTraining, setValidationInstances

Methods inherited from class java.lang.Object

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

Constructor Detail

AdaBoostTrainer

public AdaBoostTrainer(ClassifierTrainer weakLearner,
                       int numRounds)

AdaBoostTrainer

public AdaBoostTrainer(ClassifierTrainer weakLearner)

Method Detail

getClassifier

public AdaBoost getClassifier()

Specified by:

getClassifier in class ClassifierTrainer<AdaBoost>

train

public AdaBoost train(InstanceList trainingList)

Boosting method that resamples instances using their weights

Specified by:

train in class ClassifierTrainer<AdaBoost>