org.terrier.matching.taat

Class Full

java.lang.Object

org.terrier.matching.BaseMatching

org.terrier.matching.taat.Full

All Implemented Interfaces:

Matching

public class Full
extends BaseMatching

An exhaustive TAAT approach for matching documents to a query. This Matching strategy uses the PostingListManager for opening and scoring postings.

Since:

3.0

Author:

Nicola Tonellotto, Craig Macdonald

See Also:

PostingListManager

Field Summary

Fields inherited from class org.terrier.matching.BaseMatching

collectionStatistics, documentModifiers, dsmNamespace, IGNORE_LOW_IDF_TERMS, index, invertedIndex, lexicon, logger, MATCH_EMPTY_QUERY, numberOfRetrievedDocuments, queryTermsToMatchList, resultSet, RETRIEVED_SET_SIZE, totalTime, wm

Constructor Summary

Constructors

Constructor and Description
Full(Index index) Create a new Matching instance based on the specified index

Method Summary

Methods

Modifier and Type	Method and Description
protected void	assignScores(int i, AccumulatorResultSet rs, IterablePosting postings)
String	getInfo() Return a human readable description of this Matching class
protected void	initialisePostings(MatchingQueryTerms queryTerms)
ResultSet	match(String queryNumber, MatchingQueryTerms queryTerms) Get a ResultSet for the given query terms.

Methods inherited from class org.terrier.matching.BaseMatching

finalise, getTotalTime, initialise, setCollectionStatistics, updateEndTime, updateStartTime

Methods inherited from class java.lang.Object

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

Constructor Detail

Full

public Full(Index index)

Create a new Matching instance based on the specified index

Method Detail

getInfo

public String getInfo()

Return a human readable description of this Matching class

Specified by:

getInfo in interface Matching

Specified by:

getInfo in class BaseMatching

match

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

Get a ResultSet for the given query terms.

Specified by:

match in interface Matching

Specified by:

match in class BaseMatching

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

assignScores

protected void assignScores(int i,
                AccumulatorResultSet rs,
                IterablePosting postings)
                     throws IOException

Throws:

IOException

initialisePostings

protected void initialisePostings(MatchingQueryTerms queryTerms)

Overrides:

initialisePostings in class BaseMatching