Examples of edu.stanford.nlp.ling.Label

edu.stanford.nlp.ling.Label
Something that implements the Label interface can act as a constituent, node, or word label with linguistic attributes. A Label is required to have a "primary" String value() (although this may be null). This is referred to as its value.
Implementations of Label split into two groups with respect to equality. Classes that extend ValueLabel define equality solely in terms of String equality of its value (secondary facets may be present but are ignored for purposes of equality), and have equals and compareTo defined across all subclasses of ValueLabel. This behavior should not be changed. Other classes that implement Label define equality only with their own type and require all fields of the type to be equal.
A subclass that extends another Label class should override the definition of labelFactory(), since the contract for this method is that it should return a factory for labels of the exact same object type. @author Christopher Manning

        if(span.first < start) start = span.first;
        if(span.second > end) end = span.second;
      }
    }


    Label label = label();
    if (label instanceof CoreMap) {
    CoreMap afl = (CoreMap) label();
      afl.set(CoreAnnotations.BeginIndexAnnotation.class, start);
      afl.set(CoreAnnotations.EndIndexAnnotation.class, end);
    }

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  protected class ArabicSubcategoryStripper implements TreeTransformer {


    protected final TreeFactory tf = new LabeledScoredTreeFactory();


    public Tree transformTree(Tree tree) {
      Label lab = tree.label();
      String s = lab.value();


      if (tree.isLeaf()) {
        Tree leaf = tf.newLeaf(lab);
        leaf.setScore(tree.score());
        return leaf;

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    if (useGT) {
      unknownGTTrainer.train(tw, weight);
    }


    String word = tw.word();
    Label tagL = new Tag(tw.tag());
    String first = word.substring(0, 1);
    if (useUnicodeType) {
      char ch = word.charAt(0);
      int type = Character.getType(ch);
      if (type != Character.OTHER_LETTER) {

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    private static final long serialVersionUID = 8914098359495987617L;


    /** Doesn't accept nodes that only cover an empty. */
    public boolean test(Tree t) {
      Tree[] kids = t.children();
      Label l = t.label();
      // Delete (return false for) empty/trace nodes (ones marked '-NONE-')
      return ! ((l != null) && "-NONE-".equals(l.value()) && !t.isLeaf() && kids.length == 1 && kids[0].isLeaf());
    }

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    if (t == null || t.isLeaf()) {
      return t;
    }


    List<String> annotations = new ArrayList<String>();
    Label lab = t.label();
    String word = null;
    if (lab instanceof HasWord) {
      word = ((HasWord) lab).word();
    }
    String tag = null;
    if (lab instanceof HasTag) {
      tag = ((HasTag) lab).tag();
    }
    String cat = lab.value();
    // Tree parent = t.parent(root);


    if (t.isPhrasal()) {


      List<String> childBasicCats = childBasicCats(t);

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    return getNext(txt, originalText, null);
  }


  private Object getNext(String txt, String originalText, String annotation) {
    txt = removeSoftHyphens(txt);
    Label w = (Label) tokenFactory.makeToken(txt, yychar, yylength());
    if (invertible || annotation != null) {
      CoreLabel word = (CoreLabel) w;
      if (invertible) {
        String str = prevWordAfter.toString();
        prevWordAfter.setLength(0);

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  public Tree transformTree(Tree tree) {
    if (tree.isPreTerminal() || tree.isLeaf()) {
      return tree.deepCopy();
    }


    Label label = tree.label().labelFactory().newLabel(tree.label());
    Tree[] children = tree.children();
    while (children.length == 1 && !children[0].isLeaf()) {
      children = children[0].children();
    }
    List<Tree> processedChildren = Generics.newArrayList();

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    for (Tree child : tree.children()) {
      setSentimentLabels(child);
    }


    Label label = tree.label();
    if (!(label instanceof CoreLabel)) {
      throw new IllegalArgumentException("Required a tree with CoreLabels");
    }
    CoreLabel cl = (CoreLabel) label;
    cl.setValue(Integer.toString(RNNCoreAnnotations.getPredictedClass(tree)));

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    if (DEBUG) {
      System.err.println("Span "+start+" to "+end+" word "+wordIndex.get(words[hWord])+"/"+hWord+" tag "+tagIndex.get(hTag)+"/"+hTag+" score "+iScore(start, end, hWord, hTag));
    }
    String headWordStr = wordIndex.get(words[hWord]);
    String headTagStr = tagIndex.get(hTag);
    Label headLabel = new CategoryWordTag(headWordStr, headWordStr, headTagStr);
    int numTags = tagIndex.size();


    // deal with span 1
    if (end - start == 1) {
      Tree leaf = tf.newLeaf(new Word(headWordStr));

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    if (children.isEmpty()) return;
    //TODO: fix determineHead
    // - in phrases like "World Trade Organization 's" the head of the parent NP is "POS".
    // - this is problematic for the collocationFinder which assigns this head
    // as the POS for the collocation "World_Trade_Organization"!
    Label headLabel= hf.determineHead(t).label();
    StringBuffer testString = null;
    Integer leftSistersBuffer=0;//measures the length of sisters in words when reading
    for (int i = 0; i < children.size();i++){
      ArrayList<Integer> childConstituents = new ArrayList<Integer>();
      childConstituents.add(i);

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