public List<Disease> getTopFiveProbableDisease() {
    List<Integer> sympInNoOfDocs;
    List<Disease> result = new ArrayList<Disease>();

    List<Disease> allDisease = this.appDAO.getAllDisease();

    for (Disease disease : allDisease) {
      conditionalProbForEachSymp = new ArrayList<Double>();
      this.prior = appDAO.getPrior(disease);
      sympInNoOfDocs = appDAO.symptomsInNoOfDocs(disease.getDiseaseName());

      for (Integer i : sympInNoOfDocs) {
        Double num = (double) (i + 1);
        Double den = (double) (disease.getDocCount() + 2);
        conditionalProbForEachSymp.add(num / den);
      }

      disease.setProbabilty(
          this.algorithm.classify(this.prior, inputFeatureVector, conditionalProbForEachSymp));

      /*
       * clear the bias
       * for example if one/more of user symptom is absent in all docs
       * but other symptoms matches.
       */

      Integer biasedSympNo = 0;

      for (int i = 0; i < inputFeatureVector.size(); i++) {
        if (inputFeatureVector.get(i) == 1 && sympInNoOfDocs.get(i) == 0) {
          biasedSympNo++;
        }
      }

      disease.probabilty = disease.probabilty - biasedSympNo * 2;
      disease.setDiseaseName(
          disease.diseaseName.substring(0, 1).toUpperCase() + disease.diseaseName.substring(1));
      result.add(disease);
    }
    Collections.sort(result, new DiseaseComparator());
    Collections.reverse(result);

    ArrayList<Disease> topFiv = new ArrayList<Disease>();

    for (int i = 0; i < 5; i++) {
      topFiv.add(result.get(i));
    }
    int sum = 0;
    for (Disease d : topFiv) {
      sum += d.probabilty;
    }

    for (Disease d : topFiv) {
      d.probabilty = Math.ceil(100 - Math.abs(d.probabilty / sum * 100));
    }

    return topFiv;
  }
 @Override
 public String getAboutDisease(Disease disease) {
   disease.diseaseName = disease.getDiseaseName().toLowerCase();
   return this.appDAO.getAboutDisease(disease);
 }