org.terrier.matching

Class FatScoringMatching

java.lang.Object

org.terrier.matching.FatScoringMatching

All Implemented Interfaces:

Matching

public class FatScoringMatching
extends Object
implements Matching

Scores a FatResultSet into a normal ResultSet for a given weighting model

Since:

4.0

Author:

Craig Macdonald

Field Summary

Fields

Modifier and Type	Field and Description
protected List<DocumentScoreModifier>	documentModifiers Contains the document score modifiers to be applied for a query.
protected static String	dsmNamespace the default namespace for the document score modifiers that are specified in the properties file.
boolean	sort

Constructor Summary

Constructors

Constructor and Description
FatScoringMatching(Index _index, Matching _parent)
FatScoringMatching(Index _index, Matching _parent, WeightingModel _wm)

Method Summary

Methods

Modifier and Type	Method and Description
protected static boolean	containsFieldPostings(WritablePosting[][] postings)
ResultSet	doMatch(String queryNumber, MatchingQueryTerms queryTerms, ResultSet inputRS)
String	getInfo() Return a human readable description of this Matching class
ResultSet	match(String queryNumber, MatchingQueryTerms queryTerms) Get a ResultSet for the given query terms.
void	setCollectionStatistics(CollectionStatistics cs) Update the collection statistics being used by this matching instance

Methods inherited from class java.lang.Object

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

Field Detail

dsmNamespace

protected static String dsmNamespace

the default namespace for the document score modifiers that are specified in the properties file.

documentModifiers

protected List<DocumentScoreModifier> documentModifiers

Contains the document score modifiers to be applied for a query.

sort

public boolean sort

Constructor Detail

FatScoringMatching

public FatScoringMatching(Index _index,
                  Matching _parent,
                  WeightingModel _wm)

FatScoringMatching

public FatScoringMatching(Index _index,
                  Matching _parent)

Method Detail

getInfo

public String getInfo()

Description copied from interface: Matching

Return a human readable description of this Matching class

Specified by:

getInfo in interface Matching

containsFieldPostings

protected static boolean containsFieldPostings(WritablePosting[][] postings)

doMatch

public ResultSet doMatch(String queryNumber,
                MatchingQueryTerms queryTerms,
                ResultSet inputRS)
                  throws IOException

Throws:

IOException

match

public ResultSet match(String queryNumber,
              MatchingQueryTerms queryTerms)
                throws IOException

Description copied from interface: Matching

Get a ResultSet for the given query terms.

Specified by:

match in interface Matching

Parameters:

queryNumber - - some ID of the query

queryTerms - - query terms to match

Returns:

ResultSet - the matched results

Throws:

IOException - if a problem occurs during matching

setCollectionStatistics

public void setCollectionStatistics(CollectionStatistics cs)

Description copied from interface: Matching

Update the collection statistics being used by this matching instance

Specified by:

setCollectionStatistics in interface Matching

Parameters:

cs - CollectionStatistics to use during matching