edu.nyu.jet.refres

Class Hobbs

java.lang.Object

edu.nyu.jet.refres.Hobbs

public class Hobbs
extends Object

functions for computing 'Hobbs distance' for reference resolution.

Constructor Summary

Constructors

Constructor and Description
Hobbs()

Method Summary

Methods

Modifier and Type	Method and Description
static int	distance(Document doc, Annotation m1, Annotation m2, ArrayList<Annotation> antecedents, Vector sentences) computes the distance (number of mention nodes traversed) in a Hobbs search starting from parse tree node 'm2' and searching backwards for parse tree node 'm1'.
static boolean	sameSimplex(Annotation x, Annotation y, HashMap<Annotation,Annotation> parents) returns true if parse tree nodes x and y are part of the same simplex sentence (used for reflexive pronoun tests).

Methods inherited from class java.lang.Object

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

Constructor Detail

Hobbs

public Hobbs()

Method Detail

distance

public static int distance(Document doc,
           Annotation m1,
           Annotation m2,
           ArrayList<Annotation> antecedents,
           Vector sentences)

computes the distance (number of mention nodes traversed) in a Hobbs search starting from parse tree node 'm2' and searching backwards for parse tree node 'm1'.

Parameters:

m1 - a parse tree node (the potential antecedent)

m2 - a parse tree node (the anaphor)

antecedents - a list of the potential antecedents in the sentence containing m2, in Hobbs order, as produced by collectAntecedents

sentences - a Vector of the sentences in the Document

sameSimplex

public static boolean sameSimplex(Annotation x,
                  Annotation y,
                  HashMap<Annotation,Annotation> parents)

returns true if parse tree nodes x and y are part of the same simplex sentence (used for reflexive pronoun tests).