Package opennlp.tools.coref.mention

Examples of opennlp.tools.coref.mention.MentionContext

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    }
    return false;
  }

  protected boolean excluded(MentionContext ec, DiscourseEntity de) {
    MentionContext cec = de.getLastExtent();
    //System.err.println("IsAResolver.excluded?: ec.span="+ec.getSpan()+" cec.span="+cec.getSpan()+" cec="+cec.toText()+" lastToken="+ec.getNextToken());
    if (ec.getSentenceNumber() != cec.getSentenceNumber()) {
      //System.err.println("IsAResolver.excluded: (true) not same sentence");
      return (true);
    }
    //shallow parse appositives
    //System.err.println("IsAResolver.excluded: ec="+ec.toText()+" "+ec.span+" cec="+cec.toText()+" "+cec.span);
    if (cec.getIndexSpan().getEnd() == ec.getIndexSpan().getStart() - 2) {
      return (false);
    }
    //full parse w/o trailing comma
    if (cec.getIndexSpan().getEnd() == ec.getIndexSpan().getEnd()) {
      //System.err.println("IsAResolver.excluded: (false) spans share end");
      return (false);
    }
    //full parse w/ trailing comma or period
    if (cec.getIndexSpan().getEnd() <= ec.getIndexSpan().getEnd() + 2 && (ec.getNextToken() != null && (ec.getNextToken().toString().equals(",") || ec.getNextToken().toString().equals(".")))) {
      //System.err.println("IsAResolver.excluded: (false) spans end + punct");
      return (false);
    }
    //System.err.println("IsAResolver.excluded: (true) default");
    return (true);
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    //System.err.println("IsAResolver.excluded: (true) default");
    return (true);
  }

  protected boolean outOfRange(MentionContext ec, DiscourseEntity de) {
    MentionContext cec = de.getLastExtent();
    return (cec.getSentenceNumber() != ec.getSentenceNumber());
  }
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  protected List getFeatures(MentionContext mention, DiscourseEntity entity) {
    List features = new ArrayList();
    features.addAll(super.getFeatures(mention, entity));
    if (entity != null) {
      MentionContext ant = entity.getLastExtent();
      List leftContexts = getContextFeatures(ant);
      for (int ci = 0, cn = leftContexts.size(); ci < cn; ci++) {
        features.add("l" + leftContexts.get(ci));
      }
      List rightContexts = getContextFeatures(mention);
      for (int ci = 0, cn = rightContexts.size(); ci < cn; ci++) {
        features.add("r" + rightContexts.get(ci));
      }
      features.add("hts"+ant.getHeadTokenTag()+","+mention.getHeadTokenTag());
    }
    /*
    if (entity != null) {
      //System.err.println("MaxentIsResolver.getFeatures: ["+ec2.toText()+"] -> ["+de.getLastExtent().toText()+"]");
      //previous word and tag
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  protected boolean excluded(MentionContext mention, DiscourseEntity entity) {
    if (super.excluded(mention,entity)) {
      return true;
    }
    else {
      MentionContext cec = entity.getLastExtent();
      return (!cec.getHeadTokenTag().equals("NNS") || super.excluded(mention, entity));
    }
  }
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  protected List getFeatures(MentionContext mention, DiscourseEntity entity) {
    List features = new ArrayList();
    features.addAll(super.getFeatures(mention, entity));
    if (entity != null) { //generate pronoun w/ referent features
      MentionContext cec = entity.getLastExtent();
      //String gen = getPronounGender(pronoun);
      features.addAll(getPronounMatchFeatures(mention,entity));
      features.addAll(getContextFeatures(cec));     
      features.addAll(getDistanceFeatures(mention,entity));     
      features.add(getMentionCountFeature(entity));
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      return (true);
    }
    String mentionGender = null;

    for (Iterator ei = entity.getMentions(); ei.hasNext();) {
      MentionContext entityMention = (MentionContext) ei.next();
      String tag = entityMention.getHeadTokenTag();
      if (tag != null && tag.startsWith("PRP") && Linker.singularThirdPersonPronounPattern.matcher(mention.getHeadTokenText()).matches()) {
        if (mentionGender == null) { //lazy initilization
          mentionGender = getPronounGender(mention.getHeadTokenText());
        }
        String entityGender = getPronounGender(entityMention.getHeadTokenText());
        if (!entityGender.equals("u") && !mentionGender.equals(entityGender)) {
          return (true);
        }
      }
    }
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    }
    return (false);
  }

  protected boolean outOfRange(MentionContext mention, DiscourseEntity entity) {
    MentionContext cec = entity.getLastExtent();
    //System.err.println("MaxentSingularPronounresolve.outOfRange: ["+entity.getLastExtent().toText()+" ("+entity.getId()+")] ["+mention.toText()+" ("+mention.getId()+")] entity.sentenceNumber=("+entity.getLastExtent().getSentenceNumber()+")-mention.sentenceNumber=("+mention.getSentenceNumber()+") > "+numSentencesBack);   
    return (mention.getSentenceNumber() - cec.getSentenceNumber() > numSentencesBack);
  }
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    List features = new ArrayList();
    features.addAll(super.getFeatures(mention, entity));
    if (entity != null) {
      features.addAll(getPronounMatchFeatures(mention,entity));
      List contexts = getContextFeatures(mention);
      MentionContext cec = entity.getLastExtent();
      if (mention.getHeadTokenTag().startsWith("PRP") && cec.getHeadTokenTag().startsWith("PRP")) {
        features.add(mention.getHeadTokenText() + "," + cec.getHeadTokenText());
      }
      else if (mention.getHeadTokenText().startsWith("NNP")) {
        for (int ci = 0, cl = contexts.size(); ci < cl; ci++) {
          features.add(contexts.get(ci));
        }
        features.add(mention.getNameType() + "," + cec.getHeadTokenText());
      }
      else {
        List ccontexts = getContextFeatures(cec);
        for (int ci = 0, cl = ccontexts.size(); ci < cl; ci++) {
          features.add(ccontexts.get(ci));
        }
        features.add(cec.getNameType() + "," + mention.getHeadTokenText());
      }
    }
    return (features);
  }
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    }
  }

  private MentionContext getProperNounExtent(DiscourseEntity de) {
    for (Iterator ei = de.getMentions(); ei.hasNext();) { //use first extent which is propername
      MentionContext xec = (MentionContext) ei.next();
      String xecHeadTag = xec.getHeadTokenTag();
      if (xecHeadTag.startsWith("NNP") || initialCaps.matcher(xec.getHeadTokenText()).find()) {
        return xec;
      }
    }
    return null;
  }
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    }
    return false;
  }

  protected List getAcronymFeatures(MentionContext mention, DiscourseEntity entity) {
    MentionContext xec = getProperNounExtent(entity);
    String ecStrip = stripNp(mention);
    String xecStrip = stripNp(xec);
    if (ecStrip != null && xecStrip != null) {
      if (isAcronym(ecStrip, xecStrip)) {
        List features = new ArrayList(1);       
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Related Classes of opennlp.tools.coref.mention.MentionContext

  • net.sf.nlpshell.CorefParse
  • opennlp.tools.cmdline.coref.CoreferencerTool$CorefParse
  • opennlp.tools.coref.AbstractLinker
  • opennlp.tools.coref.DiscourseElement
  • opennlp.tools.coref.resolver.AbstractResolver
  • opennlp.tools.coref.resolver.CommonNounResolver
  • opennlp.tools.coref.resolver.IsAResolver
  • opennlp.tools.coref.resolver.MaxentResolver
  • opennlp.tools.coref.resolver.PluralNounResolver
  • opennlp.tools.coref.resolver.PluralPronounResolver
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