de.jstacs.scoringFunctions
Interface SamplingScoringFunction

All Superinterfaces:

Cloneable, NormalizableScoringFunction, ScoringFunction, Storable

All Known Implementing Classes:

DifferentiableHigherOrderHMM, MutableMarkovModelScoringFunction

public interface SamplingScoringFunction
extends NormalizableScoringFunction

Interface for NormalizableScoringFunctions that can be used for Metropolis-Hastings sampling in a SamplingScoreBasedClassifier.

Author:

Jan Grau

Field Summary

Fields inherited from interface de.jstacs.scoringFunctions.ScoringFunction

UNKNOWN

Method Summary

int[][]

getSamplingGroups(int parameterOffset) Returns groups of indexes of parameters that shall be drawn together in a sampling procedure

Methods inherited from interface de.jstacs.scoringFunctions.NormalizableScoringFunction

addGradientOfLogPriorTerm, getEss, getInitialClassParam, getLogNormalizationConstant, getLogPartialNormalizationConstant, getLogPriorTerm, getSizeOfEventSpaceForRandomVariablesOfParameter, isNormalized

Methods inherited from interface de.jstacs.scoringFunctions.ScoringFunction

clone, getAlphabetContainer, getCurrentParameterValues, getInstanceName, getLength, getLogScore, getLogScore, getLogScoreAndPartialDerivation, getLogScoreAndPartialDerivation, getNumberOfParameters, getNumberOfRecommendedStarts, initializeFunction, initializeFunctionRandomly, isInitialized, setParameters

Methods inherited from interface de.jstacs.Storable

toXML

Method Detail

getSamplingGroups

int[][] getSamplingGroups(int parameterOffset)

Returns groups of indexes of parameters that shall be drawn together in a sampling procedure

Parameters:

parameterOffset - a global offset on the parameter indexes

Returns:

the groups of indexes. The first dimension represents the different groups while the second dimension contains the parameters that shall be sampled together. Internal parameter indexes need to be increased by parameterOffset.