Package org.terrier.matching.models.dependence

Class MRF

java.lang.Object

org.terrier.matching.models.WeightingModel

org.terrier.matching.models.dependence.MRF

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Model

public class MRF
extends WeightingModel

See Also:

Serialized Form

Field Summary

Fields inherited from class org.terrier.matching.models.WeightingModel

averageDocumentLength, c, cs, documentFrequency, es, i, keyFrequency, numberOfDocuments, numberOfPointers, numberOfPostings, numberOfTokens, numberOfUniqueTerms, rq, termFrequency

Constructor Summary

Constructors

Constructor	Description
MRF()
MRF(int _ngramLength)

Method Summary

Modifier and Type	Method	Description
java.lang.String	getInfo()	Returns the name of the model.
void	prepare()	prepare
double	score(double matchingNGrams, double _docLength)	This method provides the contract for implementing weighting models.
void	setEntryStatistics(EntryStatistics _es)	Sets entry statistics.

Methods inherited from class org.terrier.matching.models.WeightingModel

clone, getOverflowed, getParameter, score, setCollectionStatistics, setKeyFrequency, setParameter, setRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

MRF

public MRF()

MRF

public MRF(int _ngramLength)

Method Detail

prepare

public void prepare()

Description copied from class: WeightingModel

prepare

Overrides:

prepare in class WeightingModel

getInfo

public java.lang.String getInfo()

Description copied from class: WeightingModel

Returns the name of the model.

Specified by:

getInfo in interface Model

Specified by:

getInfo in class WeightingModel

Returns:

java.lang.String

setEntryStatistics

public void setEntryStatistics(EntryStatistics _es)

Description copied from class: WeightingModel

Sets entry statistics.

Overrides:

setEntryStatistics in class WeightingModel

score

public double score(double matchingNGrams,
                    double _docLength)

Description copied from class: WeightingModel

This method provides the contract for implementing weighting models.

Specified by:

score in class WeightingModel

Parameters:

matchingNGrams - The term frequency in the document

_docLength - the document's length

Returns:

the score assigned to a document with the given tf and docLength, and other preset parameters