edu.cmu.minorthird.classify.algorithms.linear
Class VotedPerceptron

java.lang.Object
  edu.cmu.minorthird.classify.OnlineClassifierLearner
      edu.cmu.minorthird.classify.OnlineBinaryClassifierLearner
          edu.cmu.minorthird.classify.algorithms.linear.VotedPerceptron

All Implemented Interfaces:

BinaryClassifierLearner, ClassifierLearner, java.io.Serializable, java.lang.Cloneable

public class VotedPerceptron
extends OnlineBinaryClassifierLearner
implements java.io.Serializable

Voted perceptron algorithm. As described in "Large Margin Classification Using the Perceptron Algorithm", Yoav Freund and Robert E. Schapire, Proceedings of the Eleventh Annual Conference on Computational Learning Theory, 1998.

Author:

William Cohen

See Also:

Serialized Form

Constructor Summary

VotedPerceptron()

VotedPerceptron(boolean ignoreWeights)
If ignoreWeights is true, treat all weights as binary.

Method Summary

void	addExample(Example example) Subclasses should use this method to perform whatever incremental update is needed after in response to a new example.
Classifier	getClassifier() Subclasses should use this method to return the current classifier.
void	reset() 'forget' everything about the last learning task, and start a new task.
java.lang.String	toString()

Methods inherited from class edu.cmu.minorthird.classify.OnlineBinaryClassifierLearner

getBinaryClassifier, getSchema, setSchema

Methods inherited from class edu.cmu.minorthird.classify.OnlineClassifierLearner

completeTraining, copy, hasNextQuery, nextQuery, setInstancePool

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.cmu.minorthird.classify.ClassifierLearner

completeTraining, copy, hasNextQuery, nextQuery, setInstancePool

Constructor Detail

VotedPerceptron

public VotedPerceptron()

VotedPerceptron

public VotedPerceptron(boolean ignoreWeights)

If ignoreWeights is true, treat all weights as binary. For backward compatibility with an older buggy version.

Method Detail

reset

public void reset()

Description copied from class: OnlineClassifierLearner

'forget' everything about the last learning task, and start a new task. Subclasses need to implement this method

Specified by:

reset in interface ClassifierLearner

Specified by:

reset in class OnlineClassifierLearner

addExample

public void addExample(Example example)

Description copied from class: OnlineClassifierLearner

Subclasses should use this method to perform whatever incremental update is needed after in response to a new example.

Specified by:

addExample in interface ClassifierLearner

Specified by:

addExample in class OnlineClassifierLearner

getClassifier

public Classifier getClassifier()

Description copied from class: OnlineClassifierLearner

Subclasses should use this method to return the current classifier.

Specified by:

getClassifier in interface ClassifierLearner

Specified by:

getClassifier in class OnlineClassifierLearner

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object