org.terrier.applications.batchquerying

Class ParallelTRECQuerying

java.lang.Object

org.terrier.applications.AbstractQuerying

org.terrier.applications.batchquerying.TRECQuerying

org.terrier.applications.batchquerying.ParallelTRECQuerying

public class ParallelTRECQuerying
extends TRECQuerying

An instance of TRECQuerying that will invoke multiple threads concurrently

Nested Class Summary

Nested classes/interfaces inherited from class org.terrier.applications.batchquerying.TRECQuerying

TRECQuerying.Command

Nested classes/interfaces inherited from class org.terrier.applications.AbstractQuerying

AbstractQuerying.AbstractQueryingCommand

Field Summary

Fields inherited from class org.terrier.applications.batchquerying.TRECQuerying

BATCHRETRIEVE_COMMAND, BATCHRETRIEVE_PROP_PREFIX, defaultQEModel, DUMP_SETTINGS, indexref, ITERATION, logger, method, mModel, printer, queryingManager, querySource, random, removeQueryPeriods, resultFile, resultFileRaw, RESULTS_LENGTH, resultsCache, resultsFilename

Fields inherited from class org.terrier.applications.AbstractQuerying

controls, matchingCount, matchopQl

Constructor Summary

Constructors

Constructor and Description
ParallelTRECQuerying()
ParallelTRECQuerying(boolean _queryexpansion)
ParallelTRECQuerying(IndexRef i)

Method Summary

Modifier and Type	Method and Description
protected void	createManager() Create a querying manager.
protected void	finishedQueries() After finishing with a batch of queries, close the result file
PrintWriter	getResultFile(String predefinedName) Returns a PrintWriter used to store the results.
static void	main(String[] args)
String	processQueries(double c, boolean c_set) Performs the matching using the specified weighting model from the setup and possibly a combination of evidence mechanism.
protected void	processQueryAndWrite(String queryId, String query, double cParameter, boolean c_set) According to the given parameters, it sets up the correct matching class and performs retrieval for the given query.

Methods inherited from class org.terrier.applications.batchquerying.TRECQuerying

close, getIndexRef, getManager, getNextQueryCounter, getOutputFormat, getQueryParser, getRandomQueryCounter, getResultsCache, getSequentialQueryCounter, getTopicsParser, initSearchRequestModification, intialise, loadIndex, preQueryingSearchRequestModification, printSettings, processQueries, processQueries, processQuery, processQuery, processQuery, setTopicsParser, startingBatchOfQueries

Methods inherited from class java.lang.Object

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

Constructor Detail

ParallelTRECQuerying

public ParallelTRECQuerying()

ParallelTRECQuerying

public ParallelTRECQuerying(IndexRef i)

ParallelTRECQuerying

public ParallelTRECQuerying(boolean _queryexpansion)

Method Detail

createManager

protected void createManager()

Description copied from class: AbstractQuerying

Create a querying manager. This method should be overriden if another matching model is required.

Overrides:

createManager in class TRECQuerying

processQueryAndWrite

protected void processQueryAndWrite(String queryId,
                                    String query,
                                    double cParameter,
                                    boolean c_set)

Description copied from class: TRECQuerying

According to the given parameters, it sets up the correct matching class and performs retrieval for the given query.

Overrides:

processQueryAndWrite in class TRECQuerying

Parameters:

queryId - the identifier of the query to process.

query - the query to process.

cParameter - double the value of the parameter to use.

c_set - A boolean variable indicating if cParameter has been specified.

finishedQueries

protected void finishedQueries()

Description copied from class: TRECQuerying

After finishing with a batch of queries, close the result file

Overrides:

finishedQueries in class TRECQuerying

getResultFile

public PrintWriter getResultFile(String predefinedName)

Description copied from class: TRECQuerying

Returns a PrintWriter used to store the results.

Overrides:

getResultFile in class TRECQuerying

Parameters:

predefinedName - java.lang.String a non-standard prefix for the result file.

Returns:

a handle used as a destination for storing results.

processQueries

public String processQueries(double c,
                             boolean c_set)

Description copied from class: TRECQuerying

Performs the matching using the specified weighting model from the setup and possibly a combination of evidence mechanism. It parses the file with the queries creates the file of results, and for each query, gets the relevant documents, scores them, and outputs the results to the result file.

Queries
Queries are parsed from file, specified by the trec.topics property (comma delimited)

Overrides:

processQueries in class TRECQuerying

Parameters:

c - the value of c.

c_set - specifies whether a value for c has been specified.

Returns:

String the filename that the results have been written to

main

public static void main(String[] args)