leila.relations
Class InstanceOf

java.lang.Object
  leila.relations.Relation
      leila.relations.InstanceOf

public class InstanceOf
extends Relation

This class is part of LEILA (http://mpii.de/yago-naga/leila). It is licensed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0) by the author Fabian M. Suchanek (http://suchanek.name).

InstanceOf.java implements the isa-Relation from WordNet. The class requires the files wn_s.pl and wn_hyp.pl. These files can be downloaded from the WordNet site. They are part of the Prolog version of WordNet. A copy of the files is also provided in the distribution package of LEILA. The following parameters are required in leila.ini:

• wordNetSFile - the file wn_s.pl
• wordNetHypFile - the file wn_hyp.pl

By default, the copies that ship with LEILA are read.

Nested Class Summary

Nested classes/interfaces inherited from class leila.relations.Relation

Relation.WordPairType

Field Summary

protected WordNet

wn Holds the wordnet data

Constructor Summary

InstanceOf()
Constructor

Method Summary

Relation.WordPairType	assess(LinkageWord w1, LinkageWord w2) Judges a pair of words
int	hops(java.lang.String s1, java.lang.String s2) Returs the minimal number of hops necessary from one concept to another
protected int	hops(WordNet.Synset s1, WordNet.Synset s2) Helper routine for hops
static void	main(java.lang.String[] argv) Test routine
boolean	possibleExample(LinkageWord w) Tells whether this word is a possible example
boolean	requiresCounterexamples() returns true
protected int	seek(WordNet.Synset start, WordNet.Synset current, java.util.List<WordNet.Synset> goals, boolean foundAtomic) Seeks a goalWordNet.Synset upwards from startWordNet.Synset.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

wn

protected WordNet wn

Holds the wordnet data

Constructor Detail

InstanceOf

public InstanceOf()
           throws java.lang.Exception

Constructor

Throws:

java.lang.Exception

Method Detail

requiresCounterexamples

public boolean requiresCounterexamples()

returns true

Overrides:

requiresCounterexamples in class Relation

seek

protected int seek(WordNet.Synset start,
                   WordNet.Synset current,
                   java.util.List<WordNet.Synset> goals,
                   boolean foundAtomic)

Seeks a goalWordNet.Synset upwards from startWordNet.Synset. Returns 0 if not found, 1 if found, but above basic level, 2 if found below or equal to basic level, foundAtomic = there was an atomic term below currentWordNet.Synset. Initial call: foundAtomic==false, start==current

possibleExample

public boolean possibleExample(LinkageWord w)

Tells whether this word is a possible example

Overrides:

possibleExample in class Relation

assess

public Relation.WordPairType assess(LinkageWord w1,
                                    LinkageWord w2)

Judges a pair of words

Overrides:

assess in class Relation

toString

public java.lang.String toString()

Overrides:

toString in class Relation

hops

public int hops(java.lang.String s1,
                java.lang.String s2)

Returs the minimal number of hops necessary from one concept to another

hops

protected int hops(WordNet.Synset s1,
                   WordNet.Synset s2)

Helper routine for hops

main

public static void main(java.lang.String[] argv)
                 throws java.lang.Exception

Test routine

Throws:

java.lang.Exception