edu.cmu.minorthird.classify.sequential
Class MarginPerceptronLearner

java.lang.Object
  edu.cmu.minorthird.classify.sequential.CollinsPerceptronLearner
      edu.cmu.minorthird.classify.sequential.MarginPerceptronLearner

All Implemented Interfaces:

BatchSequenceClassifierLearner, SequenceClassifierLearner, SequenceConstants

public class MarginPerceptronLearner
extends CollinsPerceptronLearner

Sequential learner based on the perceptron algorithm that takes the top-k viterbi paths and subtracts those within a margin of beta of the correct.

Author:

Sunita Sarawagi

Nested Class Summary

Nested classes/interfaces inherited from class edu.cmu.minorthird.classify.sequential.CollinsPerceptronLearner

CollinsPerceptronLearner.MultiClassVPClassifier

Field Summary

Fields inherited from class edu.cmu.minorthird.classify.sequential.CollinsPerceptronLearner

DEBUG, history, historySize, log, numberOfEpochs

Fields inherited from interface edu.cmu.minorthird.classify.sequential.SequenceConstants

HISTORY_FEATURE, NULL_CLASS_NAME

Constructor Summary

MarginPerceptronLearner()

MarginPerceptronLearner(int numberOfEpochs)

MarginPerceptronLearner(int historySize, int numberOfEpochs, float beta)

MarginPerceptronLearner(int historySize, int numberOfEpochs, float beta, int topK)

Method Summary

SequenceClassifier

batchTrain(SequenceDataset dataset)

Methods inherited from class edu.cmu.minorthird.classify.sequential.CollinsPerceptronLearner

getHistorySize, getHistorySizeHelp, getNumberOfEpochs, setHistorySize, setNumberOfEpochs, setSchema

Methods inherited from class java.lang.Object

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

Constructor Detail

MarginPerceptronLearner

public MarginPerceptronLearner()

MarginPerceptronLearner

public MarginPerceptronLearner(int numberOfEpochs)

MarginPerceptronLearner

public MarginPerceptronLearner(int historySize,
                               int numberOfEpochs,
                               float beta)

MarginPerceptronLearner

public MarginPerceptronLearner(int historySize,
                               int numberOfEpochs,
                               float beta,
                               int topK)

Method Detail

batchTrain

public SequenceClassifier batchTrain(SequenceDataset dataset)

Specified by:

batchTrain in interface BatchSequenceClassifierLearner

Overrides:

batchTrain in class CollinsPerceptronLearner