Package cc.mallet.fst.semi_supervised.pr

Class CRFTrainerByPR

java.lang.Object

cc.mallet.fst.TransducerTrainer

cc.mallet.fst.semi_supervised.pr.CRFTrainerByPR

All Implemented Interfaces:

TransducerTrainer.ByOptimization

public class CRFTrainerByPR
extends TransducerTrainer
implements TransducerTrainer.ByOptimization

Posterior regularization trainer.

Author:

Gregory Druck

Nested Class Summary

Nested classes/interfaces inherited from class cc.mallet.fst.TransducerTrainer

TransducerTrainer.ByIncrements, TransducerTrainer.ByInstanceIncrements, TransducerTrainer.ByOptimization

Constructor Summary

Constructors

Constructor	Description
CRFTrainerByPR(CRF crf, java.util.ArrayList<PRConstraint> constraints)
CRFTrainerByPR(CRF crf, java.util.ArrayList<PRConstraint> constraints, int numThreads)

Method Summary

Modifier and Type	Method	Description
int	getIteration()
Optimizer	getOptimizer()
double	getQValue()
double	getTotalValue()
Transducer	getTransducer()
boolean	isFinishedTraining()
void	setPGaussianPriorVariance(double pGpv)
void	setStateLabelMap(StateLabelMap map)
void	setTolerance(double tolerance)
boolean	train(InstanceList train, int numIterations)	Train the transducer associated with this TransducerTrainer.
boolean	train(InstanceList train, int minIter, int maxIter)
boolean	train(InstanceList train, int minIter, int maxIter, int maxIterPerStep)

Methods inherited from class cc.mallet.fst.TransducerTrainer

addEvaluator, addEvaluators, removeEvaluator, runEvaluators, train

Methods inherited from class java.lang.Object

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

Constructor Detail

CRFTrainerByPR

public CRFTrainerByPR(CRF crf,
                      java.util.ArrayList<PRConstraint> constraints)

CRFTrainerByPR

public CRFTrainerByPR(CRF crf,
                      java.util.ArrayList<PRConstraint> constraints,
                      int numThreads)

Method Detail

getIteration

public int getIteration()

Specified by:

getIteration in class TransducerTrainer

getTransducer

public Transducer getTransducer()

Specified by:

getTransducer in class TransducerTrainer

isFinishedTraining

public boolean isFinishedTraining()

Specified by:

isFinishedTraining in class TransducerTrainer

setStateLabelMap

public void setStateLabelMap(StateLabelMap map)

setPGaussianPriorVariance

public void setPGaussianPriorVariance(double pGpv)

setTolerance

public void setTolerance(double tolerance)

train

public boolean train(InstanceList train,
                     int numIterations)

Description copied from class: TransducerTrainer

Train the transducer associated with this TransducerTrainer. You should be able to call this method with different trainingSet objects. Whether this causes the TransducerTrainer to combine both trainingSets or to view the second as a new alternative is at the discretion of the particular TransducerTrainer subclass involved.

Specified by:

train in class TransducerTrainer

train

public boolean train(InstanceList train,
                     int minIter,
                     int maxIter)

train

public boolean train(InstanceList train,
                     int minIter,
                     int maxIter,
                     int maxIterPerStep)

getTotalValue

public double getTotalValue()

getQValue

public double getQValue()

getOptimizer

public Optimizer getOptimizer()

Specified by:

getOptimizer in interface TransducerTrainer.ByOptimization