dragon.ir.search.smooth

Class AbstractMixtureWeightEM

java.lang.Object

dragon.ir.search.smooth.AbstractMixtureWeightEM

Direct Known Subclasses:

DocTransMixtureWeightEM

public abstract class AbstractMixtureWeightEM
extends Object

Abstract EM Algorithm for Mixture Weights Estimation

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields

Modifier and Type	Field and Description
protected int	componentNum
protected IndexReader	indexReader
protected int	iterationNum

Constructor Summary

Constructors

Constructor and Description
AbstractMixtureWeightEM(IndexReader indexReader, int componentNum, int iterationNum, boolean docFirst)

Method Summary

Modifier and Type	Method and Description
double[]	estimateModelCoefficient(RelSimpleQuery query)
protected abstract void	getComponentValue(IRDoc curDoc, int freq, double[] componentProbs)
protected abstract void	getComponentValue(SimpleTermPredicate queryTerm, int freq, double[] componentProbs)
protected IRDoc	getDoc(int seq)
protected int	getDocNum()
protected abstract void	init(RelSimpleQuery query)
protected abstract void	setDoc(IRDoc doc)
protected abstract void	setInitialParameters(double[] arrCoefficient, IRDoc[] arrDoc)
protected abstract void	setQueryTerm(SimpleTermPredicate queryTerm)
void	setStatusOut(PrintWriter out)

Methods inherited from class java.lang.Object

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

Field Detail

indexReader

protected IndexReader indexReader

iterationNum

protected int iterationNum

componentNum

protected int componentNum

Constructor Detail

AbstractMixtureWeightEM

public AbstractMixtureWeightEM(IndexReader indexReader,
                               int componentNum,
                               int iterationNum,
                               boolean docFirst)

Method Detail

setInitialParameters

protected abstract void setInitialParameters(double[] arrCoefficient,
                                             IRDoc[] arrDoc)

init

protected abstract void init(RelSimpleQuery query)

setDoc

protected abstract void setDoc(IRDoc doc)

setQueryTerm

protected abstract void setQueryTerm(SimpleTermPredicate queryTerm)

getComponentValue

protected abstract void getComponentValue(SimpleTermPredicate queryTerm,
                                          int freq,
                                          double[] componentProbs)

getComponentValue

protected abstract void getComponentValue(IRDoc curDoc,
                                          int freq,
                                          double[] componentProbs)

setStatusOut

public void setStatusOut(PrintWriter out)

estimateModelCoefficient

public double[] estimateModelCoefficient(RelSimpleQuery query)

getDocNum

protected int getDocNum()

getDoc

protected IRDoc getDoc(int seq)