dragon.ir.search.feedback

Class RocchioFeedback

java.lang.Object

dragon.ir.search.feedback.AbstractFeedback

dragon.ir.search.feedback.RocchioFeedback

All Implemented Interfaces:

Feedback

public class RocchioFeedback
extends AbstractFeedback

Rocchio Feedback

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
RocchioFeedback(Searcher searcher, int feedbackDocNum, int expandTermNum, double relevantDocCoeffi)
RocchioFeedback(Searcher searcher, int feedbackDocNum, int expandTermNum, double relevantDocCoeffi, double bm25k1, double bm25b)

Method Summary

Modifier and Type	Method and Description
protected ArrayList	estimateNewQueryModel(IRQuery oldQuery)

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

buildIRTerm, buildSimpleTermPredicate, getFeedbackDocNum, getSearcher, setFeedbackDocNum, setSearcher, updateQueryModel

Methods inherited from class java.lang.Object

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

Constructor Detail

RocchioFeedback

public RocchioFeedback(Searcher searcher,
                       int feedbackDocNum,
                       int expandTermNum,
                       double relevantDocCoeffi)

RocchioFeedback

public RocchioFeedback(Searcher searcher,
                       int feedbackDocNum,
                       int expandTermNum,
                       double relevantDocCoeffi,
                       double bm25k1,
                       double bm25b)

Method Detail

estimateNewQueryModel

protected ArrayList estimateNewQueryModel(IRQuery oldQuery)

Specified by:

estimateNewQueryModel in class AbstractFeedback