public float documentProbability(TermDocs featureDocs, TermDocs classDocs, Map<Term, Float> features, String _class, float assumedFeatureWeight, float assumedFeatureProbability, boolean normalized) throws IOException {
    float ret = 1;
    for (Map.Entry<Term, Float> featureFrequency : features.entrySet()) {
      ret *=  weightedFeatureProbability(featureDocs, classDocs, featureFrequency.getKey(), _class, assumedFeatureWeight, assumedFeatureProbability, normalized);
    }
    return ret;
  }