edu.stanford.nlp.international.spanish.process

Class AnCoraPronounDisambiguator

java.lang.Object

edu.stanford.nlp.international.spanish.process.AnCoraPronounDisambiguator

public class AnCoraPronounDisambiguator
extends java.lang.Object

A utility for preprocessing the AnCora Spanish corpus. Attempts to disambiguate Spanish personal pronouns which have multiple senses: me, te, se, nos, os Each of these can be used as 1) an indirect object pronoun or as 2) a reflexive pronoun. (me, te, nos, and os can also be used as direct object pronouns.) For the purposes of corpus preprocessing, all we need is to distinguish between the object- and reflexive-pronoun cases. Disambiguation is done first by (dictionary-powered) heuristics, and then by brute force. The brute-force decisions are manual tags for verbs with clitic pronouns which appear in the AnCora corpus.

Author:

Jon Gauthier

See Also:

SpanishTreeNormalizer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AnCoraPronounDisambiguator.PersonalPronounType

Constructor Summary

Constructors

Constructor and Description
AnCoraPronounDisambiguator()

Method Summary

Modifier and Type	Method and Description
static AnCoraPronounDisambiguator.PersonalPronounType	disambiguatePersonalPronoun(SpanishVerbStripper.StrippedVerb strippedVerb, int pronounIdx, java.lang.String clauseYield) Determine whether the given clitic pronoun is an indirect object pronoun or a reflexive pronoun.
static boolean	isAmbiguous(java.lang.String pronoun) Determine if the given pronoun can have multiple senses.

Methods inherited from class java.lang.Object

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

Constructor Detail

AnCoraPronounDisambiguator

public AnCoraPronounDisambiguator()

Method Detail

isAmbiguous

public static boolean isAmbiguous(java.lang.String pronoun)

Determine if the given pronoun can have multiple senses.

disambiguatePersonalPronoun

public static AnCoraPronounDisambiguator.PersonalPronounType disambiguatePersonalPronoun(SpanishVerbStripper.StrippedVerb strippedVerb,
                                                                                         int pronounIdx,
                                                                                         java.lang.String clauseYield)

Determine whether the given clitic pronoun is an indirect object pronoun or a reflexive pronoun. This method is only defined when the pronoun is one of me, te, se, nos, os i.e., those in which the meaning is actually ambiguous.

Parameters:

strippedVerb - Stripped verb as returned by SpanishVerbStripper.separatePronouns(String).

pronounIdx - The index of the pronoun within strippedVerb.getPronouns() which should be disambiguated.

clauseYield - A string representing the yield of the clause which contains the given verb

Throws:

java.lang.IllegalArgumentException - If the given pronoun is not ambiguous, or its disambiguation is not supported.