cc.mallet.grmm.types
Class SkeletonFactor

java.lang.Object
  cc.mallet.grmm.types.AbstractFactor
      cc.mallet.grmm.types.SkeletonFactor

All Implemented Interfaces:

Factor, java.io.Serializable, java.lang.Cloneable

public class SkeletonFactor
extends AbstractFactor

A subclass of Factor in which all operations throw an UnsupportedOperationException. This is useful for creating special-purpose factor classes that support only a few operations. $Id: SkeletonFactor.java,v 1.1 2007/10/22 21:37:44 mccallum Exp $

See Also:

Serialized Form

Field Summary

Fields inherited from class cc.mallet.grmm.types.AbstractFactor

vars

Constructor Summary

SkeletonFactor()

Method Summary

boolean	almostEquals(Factor p, double epsilon)
java.lang.String	dumpToString()
Factor	duplicate()
protected Factor	extractMaxInternal(VarSet varSet)
boolean	isNaN()
protected double	lookupValueInternal(int i)
protected Factor	marginalizeInternal(VarSet varsToKeep)
Factor	normalize() Multiplies this potential by a constant such that it sums to 1.
Assignment	sample(Randoms r) Return an assignment sampled from this factor, interpreting it as an unnormalized probability distribution.
Factor	slice(Assignment assn)

Methods inherited from class cc.mallet.grmm.types.AbstractFactor

almostEquals, argmax, assignmentIterator, asTable, containsVar, delogify, divideBy, entropy, exponentiate, extractMax, extractMax, extractMax, getVariable, isInLogSpace, log, logify, logValue, logValue, logValue, marginalize, marginalize, marginalize, marginalizeOut, marginalizeOut, multiply, multiplyBy, phi, prettyOutputString, setVarSet, sum, value, value, varSet

Methods inherited from class java.lang.Object

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

Constructor Detail

SkeletonFactor

public SkeletonFactor()

Method Detail

extractMaxInternal

protected Factor extractMaxInternal(VarSet varSet)

Specified by:

extractMaxInternal in class AbstractFactor

lookupValueInternal

protected double lookupValueInternal(int i)

Specified by:

lookupValueInternal in class AbstractFactor

marginalizeInternal

protected Factor marginalizeInternal(VarSet varsToKeep)

Specified by:

marginalizeInternal in class AbstractFactor

almostEquals

public boolean almostEquals(Factor p,
                            double epsilon)

isNaN

public boolean isNaN()

normalize

public Factor normalize()

Description copied from interface: Factor

Multiplies this potential by a constant such that it sums to 1. Destructive; returns this factor.

sample

public Assignment sample(Randoms r)

Description copied from interface: Factor

Return an assignment sampled from this factor, interpreting it as an unnormalized probability distribution.

Specified by:

sample in interface Factor

Overrides:

sample in class AbstractFactor

duplicate

public Factor duplicate()

dumpToString

public java.lang.String dumpToString()

slice

public Factor slice(Assignment assn)