Package opennlp.ccg.perceptron.Alphabet

Examples of opennlp.ccg.perceptron.Alphabet.Feature

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  /** Returns the dot product of the weights and features. */
  public double score(FeatureVector fv) {
    double retval = 0.0;
    for (FeatureVector.Iterator it = fv.iterator(); it.hasNext(); ) {
      Feature feat = it.nextFeature();
      Float value = it.nextValue();
      Integer index = feat.getIndex();
      if (index == null) continue;
      retval += weights[index] * value;
    }
    if (debug) System.err.println("score: " + retval + " " + fv);
    return retval;
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  }
 
  /** Adds the feature vector values to the weights. */
  public void add(FeatureVector fv) {
    for (FeatureVector.Iterator it = fv.iterator(); it.hasNext(); ) {
      Feature feat = it.nextFeature();
      Float value = it.nextValue();
      Integer index = feat.getIndex();
      if (index == null) continue;
      weights[index] += value;
    }
  }
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  }
 
  /** Subtracts the feature vector values from the weights. */
  public void subtract(FeatureVector fv) {
    for (FeatureVector.Iterator it = fv.iterator(); it.hasNext(); ) {
      Feature feat = it.nextFeature();
      Float value = it.nextValue();
      Integer index = feat.getIndex();
      if (index == null) continue;
      weights[index] -= value;
    }
  }
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Related Classes of opennlp.ccg.perceptron.Alphabet.Feature

  • opennlp.ccg.perceptron.Model
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