dragon.ir.search.feedback

Class InformationFlowFeedback

java.lang.Object

dragon.ir.search.feedback.AbstractFeedback

dragon.ir.search.feedback.InformationFlowFeedback

All Implemented Interfaces:

Feedback

public class InformationFlowFeedback
extends AbstractFeedback

Feedback based on information flow

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields inherited from class dragon.ir.search.feedback.AbstractFeedback

feedbackCoeffi, feedbackDocNum, searcher

Constructor Summary

Constructors

Constructor and Description
InformationFlowFeedback(TokenExtractor te, Searcher searcher, int feedbackDocNum, int expandTermNum, double feedbackCoeffi)

Method Summary

Modifier and Type	Method and Description
protected ArrayList	estimateNewQueryModel(IRQuery oldQuery)
double	getDominantVectorThreshold()
double	getDominantVectorWeight()
int	getHALWindowSize()
int	getInfrequentTermThreshold()
double	getMultiplier()
double	getSubordinateVectorThreshold()
double	getSubordinateVectorWeight()
void	setDominantVectorThreshold(double threshold)
void	setDominantVectorWeight(double weight)
void	setHALWindowSize(int size)
void	setInfrequentTermThreshold(int threshold)
void	setMultiplier(double multiplier)
void	setSubordinateVectorThreshold(double threshold)
void	setSubordinateVectorWeight(double weight)
IRQuery	updateQueryModel(IRQuery oldQuery)

Methods inherited from class dragon.ir.search.feedback.AbstractFeedback

buildIRTerm, buildSimpleTermPredicate, getFeedbackDocNum, getSearcher, setFeedbackDocNum, setSearcher

Methods inherited from class java.lang.Object

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

Constructor Detail

InformationFlowFeedback

public InformationFlowFeedback(TokenExtractor te,
                               Searcher searcher,
                               int feedbackDocNum,
                               int expandTermNum,
                               double feedbackCoeffi)

Method Detail

estimateNewQueryModel

protected ArrayList estimateNewQueryModel(IRQuery oldQuery)

Specified by:

estimateNewQueryModel in class AbstractFeedback

setHALWindowSize

public void setHALWindowSize(int size)

getHALWindowSize

public int getHALWindowSize()

setInfrequentTermThreshold

public void setInfrequentTermThreshold(int threshold)

getInfrequentTermThreshold

public int getInfrequentTermThreshold()

setMultiplier

public void setMultiplier(double multiplier)

getMultiplier

public double getMultiplier()

setDominantVectorWeight

public void setDominantVectorWeight(double weight)

getDominantVectorWeight

public double getDominantVectorWeight()

setSubordinateVectorWeight

public void setSubordinateVectorWeight(double weight)

getSubordinateVectorWeight

public double getSubordinateVectorWeight()

setDominantVectorThreshold

public void setDominantVectorThreshold(double threshold)

getDominantVectorThreshold

public double getDominantVectorThreshold()

setSubordinateVectorThreshold

public void setSubordinateVectorThreshold(double threshold)

getSubordinateVectorThreshold

public double getSubordinateVectorThreshold()

updateQueryModel

public IRQuery updateQueryModel(IRQuery oldQuery)

Specified by:

updateQueryModel in interface Feedback

Overrides:

updateQueryModel in class AbstractFeedback

Parameters:

oldQuery - the iniital query

Returns:

the updated query