if (stopWord.equals(event.modHeadWord())) return rightModNTProb;
  public double logProbRight(int id, TrainerEvent event) {    Model rightModNTModel = modelCollection.rightModNonterminalModel();    Model rightModWordModel = modelCollection.rightModWordModel();    double rightModNTProb = rightModNTModel.estimateLogProb(id, event);    if (rightModNTProb == Constants.logOfZero)      return Constants.logOfZero;    double rightWordProb = rightModWordModel.estimateLogProb(id, event);    if (rightWordProb == Constants.logOfZero)      return Constants.logOfZero;    return rightModNTProb + rightWordProb;  }