Exemple #1
0
  public ArrayList<Double> getPosteriorDecodingScores(
      SingleDPMatrix fMatrix, SingleDPMatrix bMatrix) {
    ArrayList<Double> pdScores = new ArrayList<Double>();
    State states[] = fMatrix.states();
    double fScore = fMatrix.getScore();
    double fMatrixScores[][] = fMatrix.scores;
    double bMatrixScores[][] = bMatrix.scores;

    int numberOfObservations = fMatrixScores.length;
    int numberOfStates = states.length;

    for (int i = 1; i < numberOfObservations - 1; i++) {
      double sum = 0;
      double g = Double.MIN_VALUE;
      for (int s = 0; s < numberOfStates; s++) {
        g = getWeight(states[s].getName());
        /*
        				if( states[s].getName().equals("M")){
        					g=0;
        				}
        				else
        				{
        					g=1;
        				}

        */
        double probOfOneState = Math.exp(fMatrixScores[i][s] + bMatrixScores[i][s] - fScore);
        sum = sum + (probOfOneState * g);
      }
      pdScores.add(sum);
    }
    return pdScores;
  } /*getPosteriorDecodingScores*/
Exemple #2
0
  public ArrayList<String> getPosteriorDecodingPath(
      SingleDPMatrix fMatrix, SingleDPMatrix bMatrix) {
    ArrayList<String> pdPath = new ArrayList<String>();
    State states[] = fMatrix.states();
    double fScore = fMatrix.getScore();
    double fMatrixScores[][] = fMatrix.scores;
    double bMatrixScores[][] = bMatrix.scores;

    int numberOfObservations = fMatrixScores.length;
    int numberOfStates = states.length;
    for (int i = 1; i < numberOfObservations - 1; i++) {
      ArrayList<Double> probOfStates = new ArrayList<Double>();
      for (int s = 0; s < numberOfStates; s++) {
        double probOfOneState = Math.exp(fMatrixScores[i][s] + bMatrixScores[i][s] - fScore);
        probOfStates.add(probOfOneState);
      }
      Object max_obj = Collections.max(probOfStates);
      int maxValueIndex = probOfStates.indexOf(max_obj);
      State topScoredState = states[maxValueIndex];
      pdPath.add(topScoredState.getName());
      // System.out.print(topScoredState.getName());
    }
    // System.out.println();
    // System.out.println("\n number of rows is " + numberOfObservations);
    // System.out.println("\n length of posterior decoding path is " + pdPath.size());
    return pdPath;
  } /*getPosteriorDecodingPath*/