ClosestMentionSieve.java

package edu.stanford.nlp.quoteattribution.Sieves.QMSieves;

import edu.stanford.nlp.ling.CoreAnnotations;
import edu.stanford.nlp.pipeline.Annotation;
import edu.stanford.nlp.pipeline.QuoteAttributionAnnotator;
import edu.stanford.nlp.quoteattribution.*;
import edu.stanford.nlp.util.CoreMap;
import edu.stanford.nlp.util.Pair;

import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Created by mjfang on 7/7/16.
 */
public class ClosestMentionSieve extends QMSieve {

    public ClosestMentionSieve(Annotation doc, Map<String, List<Person>> characterMap, Map<Integer, String> pronounCorefMap, Set<String> animacySet) {
        super(doc, characterMap, pronounCorefMap, animacySet, "closestBaseline");
    }

    public MentionData getClosestMention(CoreMap quote) {
        MentionData closestBackward = findClosestMentionInSpanBackward(new Pair<>(0, quote.get(CoreAnnotations.TokenBeginAnnotation.class) - 1));
        MentionData closestForward = findClosestMentionInSpanForward(new Pair<>(quote.get(CoreAnnotations.TokenEndAnnotation.class), doc.get(CoreAnnotations.TokensAnnotation.class).size() - 1));
        int backDistance = quote.get(CoreAnnotations.TokenBeginAnnotation.class) - closestBackward.end;
        int forwardDistance = closestForward.begin - quote.get(CoreAnnotations.TokenEndAnnotation.class) + 1;
        if(backDistance < forwardDistance) {
            return closestBackward;
        } else {
            return closestForward;
        }
    }

    public void doQuoteToMention(Annotation doc) {
        List<CoreMap> quotes = doc.get(CoreAnnotations.QuotationsAnnotation.class);
        for(CoreMap quote : quotes) {
            if(quote.get(QuoteAttributionAnnotator.MentionAnnotation.class) != null) {
                MentionData md = getClosestMention(quote);
                fillInMention(quote, md, sieveName);
            }
        }
    }
}