Package cc.mallet.fst.semi_supervised.pr

Class CRFOptimizableByKL

java.lang.Object

cc.mallet.fst.semi_supervised.pr.CRFOptimizableByKL

All Implemented Interfaces:

Optimizable, Optimizable.ByGradientValue, java.io.Serializable

public class CRFOptimizableByKL
extends java.lang.Object
implements java.io.Serializable, Optimizable.ByGradientValue

M-step/M-projection for PR.

Author:

Kedar Bellare, Gregory Druck

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface cc.mallet.optimize.Optimizable

Optimizable.ByBatchGradient, Optimizable.ByCombiningBatchGradient, Optimizable.ByGISUpdate, Optimizable.ByGradient, Optimizable.ByGradientValue, Optimizable.ByHessian, Optimizable.ByValue, Optimizable.ByVotedPerceptron

Field Summary

Fields

Modifier and Type	Field	Description
protected PRAuxiliaryModel	auxModel
protected double[]	cachedGradient
protected int	cachedGradientWeightsStamp
protected double	cachedValue
protected int	cachedValueWeightsStamp
protected CRF.Factors	constraints
protected CRF	crf
protected java.util.concurrent.ThreadPoolExecutor	executor
protected CRF.Factors	expectations
protected java.util.List<double[]>	finalProbList
protected double	gaussianPriorVariance
protected java.util.List<double[]>	initialProbList
protected int	numParameters
protected int	numThreads
protected InstanceList	trainingSet
protected java.util.List<double[][][]>	transitionProbList
protected double	weight

Constructor Summary

Constructors

Constructor	Description
CRFOptimizableByKL(CRF crf, InstanceList trainingSet, PRAuxiliaryModel auxModel, double[][][][] cachedDots, int numThreads, double weight)

Method Summary

Modifier and Type	Method	Description
protected void	gatherConstraints(PRAuxiliaryModel auxModel, double[][][][] cachedDots)
protected double	getExpectationValue()
int	getNumParameters()
double	getParameter(int index)
void	getParameters(double[] buffer)
double	getValue()
void	getValueGradient(double[] buffer)
void	setGaussianPriorVariance(double value)
void	setParameter(int index, double value)
void	setParameters(double[] buff)
void	shutdown()

Methods inherited from class java.lang.Object

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

Field Detail

cachedValueWeightsStamp

protected int cachedValueWeightsStamp

cachedGradientWeightsStamp

protected int cachedGradientWeightsStamp

numParameters

protected int numParameters

numThreads

protected int numThreads

weight

protected double weight

gaussianPriorVariance

protected double gaussianPriorVariance

cachedValue

protected double cachedValue

cachedGradient

protected double[] cachedGradient

initialProbList

protected java.util.List<double[]> initialProbList

finalProbList

protected java.util.List<double[]> finalProbList

transitionProbList

protected java.util.List<double[][][]> transitionProbList

trainingSet

protected InstanceList trainingSet

crf

protected CRF crf

constraints

protected CRF.Factors constraints

expectations

protected CRF.Factors expectations

executor

protected java.util.concurrent.ThreadPoolExecutor executor

auxModel

protected PRAuxiliaryModel auxModel

Constructor Detail

CRFOptimizableByKL

public CRFOptimizableByKL(CRF crf,
                          InstanceList trainingSet,
                          PRAuxiliaryModel auxModel,
                          double[][][][] cachedDots,
                          int numThreads,
                          double weight)

Method Detail

gatherConstraints

protected void gatherConstraints(PRAuxiliaryModel auxModel,
                                 double[][][][] cachedDots)

getExpectationValue

protected double getExpectationValue()

getValue

public double getValue()

Specified by:

getValue in interface Optimizable.ByGradientValue

getValueGradient

public void getValueGradient(double[] buffer)

Specified by:

getValueGradient in interface Optimizable.ByGradientValue

getNumParameters

public int getNumParameters()

Specified by:

getNumParameters in interface Optimizable

getParameters

public void getParameters(double[] buffer)

Specified by:

getParameters in interface Optimizable

getParameter

public double getParameter(int index)

Specified by:

getParameter in interface Optimizable

setParameters

public void setParameters(double[] buff)

Specified by:

setParameters in interface Optimizable

setParameter

public void setParameter(int index,
                         double value)

Specified by:

setParameter in interface Optimizable

setGaussianPriorVariance

public void setGaussianPriorVariance(double value)

shutdown

public void shutdown()