edu.stanford.nlp.naturalli.NaturalLogicAnnotations.java Source code

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Here is the source code for edu.stanford.nlp.naturalli.NaturalLogicAnnotations.java

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package edu.stanford.nlp.naturalli;

import edu.stanford.nlp.ie.util.RelationTriple;
import edu.stanford.nlp.ling.CoreAnnotation;

import java.util.Collection;

/**
 * A collection of {@link edu.stanford.nlp.ling.CoreAnnotation}s for various Natural Logic data.
 *
 * @author Gabor Angeli
 */
public class NaturalLogicAnnotations {

    /**
     * An annotation which attaches to a CoreLabel to denote that this is an operator in natural logic,
     * to describe which operator it is, and to give the scope of its argument(s).
     * This only attaches to tokens which are operators (i.e., the head words of operators).
     */
    public static final class OperatorAnnotation implements CoreAnnotation<OperatorSpec> {
        @Override
        public Class<OperatorSpec> getType() {
            return OperatorSpec.class;
        }
    }

    /**
     * An annotation which attaches to a CoreLabel to denote that this is an operator in natural logic,
     * to describe which operator it is, and to give the scope of its argument(s).
     */
    public static final class PolarityAnnotation implements CoreAnnotation<Polarity> {
        @Override
        public Class<Polarity> getType() {
            return Polarity.class;
        }
    }

    /**
     * An annotation, similar to {@link PolarityAnnotation}, which just measures whether
     * the polarity of a token is upwards, downwards, or flat.
     * This annotation always has values either "up", "down", or "flat".
     */
    public static final class PolarityDirectionAnnotation implements CoreAnnotation<String> {
        @Override
        public Class<String> getType() {
            return String.class;
        }
    }

    /**
     * The set of sentences which are entailed by the original sentence, according to Natural Logic semantics.
     */
    public static final class EntailedSentencesAnnotation implements CoreAnnotation<Collection<SentenceFragment>> {
        @SuppressWarnings("unchecked")
        @Override
        public Class<Collection<SentenceFragment>> getType() {
            return (Class<Collection<SentenceFragment>>) ((Object) Collection.class);
        }
    }

    /**
     * A set of clauses contained in and entailed by this sentence.
     */
    public static final class EntailedClausesAnnotation implements CoreAnnotation<Collection<SentenceFragment>> {
        @SuppressWarnings("unchecked")
        @Override
        public Class<Collection<SentenceFragment>> getType() {
            return (Class<Collection<SentenceFragment>>) ((Object) Collection.class);
        }
    }

    /**
     * The set of relation triples extracted from this sentence.
     */
    public static final class RelationTriplesAnnotation implements CoreAnnotation<Collection<RelationTriple>> {
        @SuppressWarnings("unchecked")
        @Override
        public Class<Collection<RelationTriple>> getType() {
            return (Class<Collection<RelationTriple>>) ((Object) Collection.class);
        }
    }
}