info.ephyra.questionanalysis.atype
Class WordNetAnswerTypeMapping

java.lang.Object
  info.ephyra.questionanalysis.atype.WordNetAnswerTypeMapping

public class WordNetAnswerTypeMapping
extends java.lang.Object

Uses WordNet to map question focus terms to answer types.

Version:

2008-02-10

Author:

Justin Betteridge

Field Summary

private static java.util.Comparator<AnswerType>	atypeComparator
private static boolean	initialized
private static org.apache.log4j.Logger	log
private static net.didion.jwnl.data.PointerUtils	pUtils
private static java.util.Map<java.lang.String,java.lang.String>	wnAtypeMap
private static java.util.List<java.lang.String>	wnAtypeMapKeys

Constructor Summary

WordNetAnswerTypeMapping()

Method Summary

private static java.lang.String	buildSynsetString(net.didion.jwnl.data.Synset node)
private static AnswerType	findWnMapMatch(net.didion.jwnl.data.Synset synset, int level)
static java.lang.String	getAnswerType(edu.cmu.lti.javelin.qa.Term focusTerm)
static void	initialize() Initializes static resources.
static boolean	isInitialized()
static void	setInitialized(boolean init)

Methods inherited from class java.lang.Object

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

Field Detail

log

private static final org.apache.log4j.Logger log

wnAtypeMap

private static java.util.Map<java.lang.String,java.lang.String> wnAtypeMap

wnAtypeMapKeys

private static java.util.List<java.lang.String> wnAtypeMapKeys

pUtils

private static net.didion.jwnl.data.PointerUtils pUtils

initialized

private static boolean initialized

atypeComparator

private static java.util.Comparator<AnswerType> atypeComparator

Constructor Detail

WordNetAnswerTypeMapping

public WordNetAnswerTypeMapping()

Method Detail

initialize

public static void initialize()
                       throws java.lang.Exception

Initializes static resources. The input properties that must be defined are:

• jwnl.configuration :
  the location of the configuration file for JWNL
• edu.cmu.lti.javelin.qa.english.WordNetAnswerTypeMapping.mapFile :

  the location of the file specifying a mapping from WordNet synsets to answer subtypes. The one-to-many mapping must be specified one element per line, with the domain and range values separated by a comma. Blank lines and lines beginning with "#" are ignored. WordNet synsets must be represented by concatenating the list of lemmas in the synset, separating them with a dash ("-"), followed by another "-" and the database file offset of the synset. (Note: this offset value will vary with the version of WordNet used.)

  Thus, an example of an element of the mapping is:
  body_of_water-water-8651117,ocean

Throws:

java.lang.Exception - if one of the required properties is not defined.

isInitialized

public static boolean isInitialized()

setInitialized

public static void setInitialized(boolean init)

getAnswerType

public static java.lang.String getAnswerType(edu.cmu.lti.javelin.qa.Term focusTerm)

findWnMapMatch

private static AnswerType findWnMapMatch(net.didion.jwnl.data.Synset synset,
                                         int level)
                                  throws java.lang.Exception

Throws:

java.lang.Exception

buildSynsetString

private static java.lang.String buildSynsetString(net.didion.jwnl.data.Synset node)