Example usage for edu.stanford.nlp.trees Constituent start

Introduction

In this page you can find the example usage for edu.stanford.nlp.trees Constituent start.

Prototype

public abstract int start();

Source Link

Document

access start node.

Usage

From source file:ims.cs.lingdata.Token.java

License:Open Source License

/**
 * Determines whether a constituent starts at this token
 * @return/*from ww w . j  ava  2 s . co m*/
 */
public boolean hasStartingConstituents() {
    Tree tree = sentence.tree;
    Set<Constituent> constituents = tree.constituents();

    for (Constituent c : constituents) {
        if (c.end() - c.start() > 1 && c.start() == predSentencePosition)
            return true;
    }

    return false;
}

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From source file:ims.cs.lingdata.Token.java

License:Open Source License

/**
 * Determines whether a constituent ends at this token
 * @return//  ww  w. j av  a2s .c  om
 */
public boolean hasEndingConstituents() {
    Tree tree = sentence.tree;
    Set<Constituent> constituents = tree.constituents();

    for (Constituent c : constituents) {
        if (c.end() - c.start() > 1 && c.end() == predSentencePosition)
            return true;
    }

    return false;
}

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From source file:ims.cs.qsample.features.SpanFeatures.java

License:Open Source License

/**
 * Add features related to constituent matches of the span
 * @param span//from   w  w  w.  jav a  2s .co  m
 * @param fs
 */
public static void matchesConstituent(Span span, FeatureSet fs) {
    Sentence sentence = span.first().sentence;
    if (sentence != span.last().sentence)
        return;

    // CONSTITUENT SEQUENCE MATCH
    if (span.first().boundaryFeatureSet.contains("HAS-STARTING-CONSTITUENT")
            && span.last().boundaryFeatureSet.contains("HAS-ENDING-CONSTITUENT")) {
        fs.add("MATCHES-AT-LEAST-ONE-CONSTITUENT");
    }

    // CONSTITUENT EXACT MATCH
    Set<Constituent> constituents = sentence.tree.constituents();
    for (Constituent constituent : constituents) {
        int begin = constituent.start();
        int end = constituent.end();

        // TODO POST-ACL: end - begin > 0 would be correct. change later.
        if (end - begin > 1 && begin == span.first().predSentencePosition
                && end == span.last().predSentencePosition) {
            fs.add("MATCHES-CONSTITUENT");
        }
    }
}

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