edu.cmu.minorthird.classify
Class MistakeCountingOnlineLearner

java.lang.Object
  edu.cmu.minorthird.classify.OnlineClassifierLearner
      edu.cmu.minorthird.classify.MistakeCountingOnlineLearner

All Implemented Interfaces:

ClassifierLearner, java.lang.Cloneable

public class MistakeCountingOnlineLearner
extends OnlineClassifierLearner

A wrapper around on OnlineClassifierLearner that counts the number of mistakes if makes.

Author:

William Cohen

Constructor Summary

MistakeCountingOnlineLearner()

MistakeCountingOnlineLearner(OnlineClassifierLearner innerLearner)

MistakeCountingOnlineLearner(OnlineClassifierLearner innerLearner, boolean reportMistakes)

Method Summary

void	addExample(Example answeredQuery) Subclasses should use this method to perform whatever incremental update is needed after in response to a new example.
void	completeTraining() A promise from the caller that no further examples will be added.
ClassifierLearner	copy() Make a copy of the learner.
Classifier	getClassifier() Subclasses should use this method to return the current classifier.
int	getNumberOfMistakes() Report the number of mistakes made by the inner learner.
ExampleSchema	getSchema() Returns the ExampleSchema - constraints on what the Examples will be.
int	getTotalNumberOfExamples() Report the number of examples sent to the inner learner.
void	reset() 'forget' everything about the last learning task, and start a new task.
void	setSchema(ExampleSchema schema) Accept an ExampleSchema - constraints on what the Examples will be.
java.lang.String	toString()

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

hasNextQuery, nextQuery, setInstancePool

Methods inherited from class java.lang.Object

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

Constructor Detail

MistakeCountingOnlineLearner

public MistakeCountingOnlineLearner()

MistakeCountingOnlineLearner

public MistakeCountingOnlineLearner(OnlineClassifierLearner innerLearner)

MistakeCountingOnlineLearner

public MistakeCountingOnlineLearner(OnlineClassifierLearner innerLearner,
                                    boolean reportMistakes)

Method Detail

copy

public ClassifierLearner copy()

Description copied from interface: ClassifierLearner

Make a copy of the learner. Note: This will reset the learner, erasing previous data!

Specified by:

copy in interface ClassifierLearner

Overrides:

copy in class OnlineClassifierLearner

completeTraining

public void completeTraining()

Description copied from class: OnlineClassifierLearner

A promise from the caller that no further examples will be added. Override this method if it's appropriate.

Specified by:

completeTraining in interface ClassifierLearner

Overrides:

completeTraining in class OnlineClassifierLearner

addExample

public void addExample(Example answeredQuery)

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

setSchema

public void setSchema(ExampleSchema schema)

Description copied from interface: ClassifierLearner

Accept an ExampleSchema - constraints on what the Examples will be.

getSchema

public ExampleSchema getSchema()

Description copied from interface: ClassifierLearner

Returns the ExampleSchema - constraints on what the Examples will be.

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

getNumberOfMistakes

public int getNumberOfMistakes()

Report the number of mistakes made by the inner learner.

getTotalNumberOfExamples

public int getTotalNumberOfExamples()

Report the number of examples sent to the inner learner.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object