org.terrier.applications

Class InteractiveQuerying

java.lang.Object

org.terrier.applications.InteractiveQuerying

public class InteractiveQuerying
extends Object

This class performs interactive querying at the command line. It asks for a query on Standard Input, and then displays the document IDs that match the given query.

Properties:

• interactive.model - which weighting model to use, defaults to PL2
• interactive.matching - which Matching class to use, defaults to Matching
• interactive.manager - which Manager class to use, defaults to Matching

Author:

Gianni Amati, Vassilis Plachouras, Ben He, Craig Macdonald

Field Summary

Fields

Modifier and Type	Field and Description
protected Index	index The data structures used.
protected static org.apache.log4j.Logger	logger The logger used
protected static boolean	lowercase Change to lowercase?
protected String	managerName The name of the manager object that handles the queries.
protected int	matchingCount the number of processed queries.
protected String[]	metaKeys
protected String	mModel The matching model used.
protected Manager	queryingManager The query manager.
protected PrintWriter	resultFile The file to store the output to.
protected static int	RESULTS_LENGTH The maximum number of presented results.
protected boolean	verbose display user prompts
protected String	wModel The weighting model used.

Constructor Summary

Constructors

Constructor and Description
InteractiveQuerying() A default constructor initialises the index, and the Manager.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes the used structures.
protected void	createManager() Create a querying manager.
protected void	loadIndex() Loads index(s) from disk.
static void	main(String[] args) Starts the interactive query application.
void	printResults(PrintWriter pw, SearchRequest q) Prints the results
void	processQueries(double cParameter) Performs the matching using the specified weighting model from the setup and possibly a combination of evidence mechanism.
void	processQuery(String queryId, String query, double cParameter) According to the given parameters, it sets up the correct matching class.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.apache.log4j.Logger logger

The logger used

lowercase

protected static final boolean lowercase

Change to lowercase?

verbose

protected boolean verbose

display user prompts

matchingCount

protected int matchingCount

the number of processed queries.

resultFile

protected PrintWriter resultFile

The file to store the output to.

managerName

protected String managerName

The name of the manager object that handles the queries. Set by property trec.manager, defaults to Manager.

queryingManager

protected Manager queryingManager

The query manager.

wModel

protected String wModel

The weighting model used.

mModel

protected String mModel

The matching model used.

index

protected Index index

The data structures used.

RESULTS_LENGTH

protected static int RESULTS_LENGTH

The maximum number of presented results.

metaKeys

protected String[] metaKeys

Constructor Detail

InteractiveQuerying

public InteractiveQuerying()

A default constructor initialises the index, and the Manager.

Method Detail

createManager

protected void createManager()

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

loadIndex

protected void loadIndex()

Loads index(s) from disk.

close

public void close()

Closes the used structures.

processQuery

public void processQuery(String queryId,
                String query,
                double cParameter)

According to the given parameters, it sets up the correct matching class.

Parameters:

queryId - String the query identifier to use.

query - String the query to process.

cParameter - double the value of the parameter to use.

processQueries

public void processQueries(double cParameter)

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 (the name of the file is defined in the address_query file), creates the file of results, and for each query, gets the relevant documents, scores them, and outputs the results to the result file.

Parameters:

cParameter - the value of c

printResults

public void printResults(PrintWriter pw,
                SearchRequest q)
                  throws IOException

Prints the results

Parameters:

pw - PrintWriter the file to write the results to.

q - SearchRequest the search request to get results from.

Throws:

IOException

main

public static void main(String[] args)

Starts the interactive query application.

Parameters:

args - the command line arguments.