info.ephyra.search.searchers
Class WorldFactbookKA

java.lang.Object
  java.lang.Thread
      info.ephyra.search.searchers.Searcher
          info.ephyra.search.searchers.KnowledgeAnnotator
              info.ephyra.search.searchers.WorldFactbookKA

All Implemented Interfaces:

java.lang.Runnable

public class WorldFactbookKA
extends KnowledgeAnnotator

A KnowledgeAnnotator for the CIA World Factbook. It answers a question about a country by extracting the information from the web page for that country.

It runs as a separate thread, so several queries can be performed in parallel.

This class extends the class KnowledgeAnnotator.

Version:

2005-09-29

Author:

Nico Schlaefer

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

private java.util.Hashtable<java.lang.String,java.lang.String>	countries Country names and corresponding web pages.
private static java.lang.String	URL The URL of the CIA World Factbook.

Fields inherited from class info.ephyra.search.searchers.KnowledgeAnnotator

index, matcher, name, qContents, qPatterns

Fields inherited from class info.ephyra.search.searchers.Searcher

query, results

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

	WorldFactbookKA(java.lang.String filename) Creates a WorldFactbookKA and calls the constructor of the superclass that reads the question patterns from a file.
protected	WorldFactbookKA(java.lang.String name, java.util.ArrayList<java.util.regex.Pattern> qPatterns, java.util.ArrayList<java.lang.String> qContents) Protected constructor used by the getCopy() method.

Method Summary

protected Result[]	doSearch() Searches the World Factbook for country details and returns an array containing a single Result object or an empty array, if the search failed.
KnowledgeAnnotator	getCopy() Returns a new instance of WorldFactbookKA.

Methods inherited from class info.ephyra.search.searchers.KnowledgeAnnotator

getContent, getKAName, getResult, matches, start

Methods inherited from class info.ephyra.search.searchers.Searcher

run

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

URL

private static final java.lang.String URL

The URL of the CIA World Factbook.

See Also:

Constant Field Values

countries

private java.util.Hashtable<java.lang.String,java.lang.String> countries

Country names and corresponding web pages.

Constructor Detail

WorldFactbookKA

protected WorldFactbookKA(java.lang.String name,
                          java.util.ArrayList<java.util.regex.Pattern> qPatterns,
                          java.util.ArrayList<java.lang.String> qContents)

Protected constructor used by the getCopy() method.

Parameters:

name - name of the KnowledgeAnnotator

qPatterns - question patterns

qContents - descriptors of the relevant content of a question

WorldFactbookKA

public WorldFactbookKA(java.lang.String filename)
                throws java.io.IOException

Creates a WorldFactbookKA and calls the constructor of the superclass that reads the question patterns from a file.

Furthermore, a list of the available countries and the URLs of the corresponding web pages are retrieved from the Factbook.

Parameters:

filename - file containing the question patterns

Throws:

java.io.IOException

Method Detail

doSearch

protected Result[] doSearch()

Searches the World Factbook for country details and returns an array containing a single Result object or an empty array, if the search failed.

Specified by:

doSearch in class Searcher

Returns:

array containing a single Result or an empty array

getCopy

public KnowledgeAnnotator getCopy()

Returns a new instance of WorldFactbookKA. A new instance is created for each query.

Specified by:

getCopy in class KnowledgeAnnotator

Returns:

new instance of WorldFactbookKA