Package org.apache.lucene.benchmark.quality

Class QualityBenchmark

java.lang.Object

org.apache.lucene.benchmark.quality.QualityBenchmark

public class QualityBenchmark
extends Object

Main entry point for running a quality benchmark.

There are two main configurations for running a quality benchmark:

• Against existing judgements.
• For submission (e.g. for a contest).

The first configuration requires a non null Judge. The second configuration requires a non null SubmissionLogger.

Field Summary

Fields

Modifier and Type	Field	Description
protected String	docNameField	index field to extract doc name for each search result; used for judging the results.
protected QualityQueryParser	qqParser	Parser for turning QualityQueries into Lucene Queries.
protected QualityQuery[]	qualityQueries	Quality Queries that this quality benchmark would execute.
protected IndexSearcher	searcher	Index to be searched.

Constructor Summary

Constructors

Constructor	Description
QualityBenchmark(QualityQuery[] qqs, QualityQueryParser qqParser, IndexSearcher searcher, String docNameField)	Create a QualityBenchmark.

Method Summary

Modifier and Type	Method	Description
QualityStats[]	execute(Judge judge, SubmissionReport submitRep, PrintWriter qualityLog)	Run the quality benchmark.
int	getMaxQueries()
int	getMaxResults()
void	setMaxQueries(int maxQueries)	Set the maximum number of quality queries to run.
void	setMaxResults(int maxResults)	set the maximum number of results to collect for each quality query.

Methods inherited from class java.lang.Object

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

Field Detail

qualityQueries

protected QualityQuery[] qualityQueries

Quality Queries that this quality benchmark would execute.

qqParser

protected QualityQueryParser qqParser

Parser for turning QualityQueries into Lucene Queries.

searcher

protected IndexSearcher searcher

Index to be searched.

docNameField

protected String docNameField

index field to extract doc name for each search result; used for judging the results.

Constructor Detail

QualityBenchmark

public QualityBenchmark(QualityQuery[] qqs,
                        QualityQueryParser qqParser,
                        IndexSearcher searcher,
                        String docNameField)

Create a QualityBenchmark.

Parameters:

qqs - quality queries to run.

qqParser - parser for turning QualityQueries into Lucene Queries.

searcher - index to be searched.

docNameField - name of field containing the document name. This allows to extract the doc name for search results, and is important for judging the results.

Method Detail

execute

public QualityStats[] execute(Judge judge,
                              SubmissionReport submitRep,
                              PrintWriter qualityLog)
                       throws Exception

Run the quality benchmark.

Parameters:

judge - the judge that can tell if a certain result doc is relevant for a certain quality query. If null, no judgements would be made. Usually null for a submission run.

submitRep - submission report is created if non null.

qualityLog - If not null, quality run data would be printed for each query.

Returns:

QualityStats of each quality query that was executed.

Throws:

Exception - if quality benchmark failed to run.

getMaxQueries

public int getMaxQueries()

Returns:

the maximum number of quality queries to run. Useful at debugging.

setMaxQueries

public void setMaxQueries(int maxQueries)

Set the maximum number of quality queries to run. Useful at debugging.

getMaxResults

public int getMaxResults()

Returns:

the maximum number of results to collect for each quality query.

setMaxResults

public void setMaxResults(int maxResults)

set the maximum number of results to collect for each quality query.