code: public void increaseValue(String goldValue, String observedValue, int times)
      {
          allGoldLabels.add(goldValue);
          allPredictedLabels.add(observedValue);
  
          for (int i = 0; i < times; i++) {
              labelSeries.add(observedValue);
          }
  
          if (!map.containsKey(goldValue)) {
              map.put(goldValue, new TreeMap<String, Integer>());
          }
  
          if (!map.get(goldValue).containsKey(observedValue)) {
              map.get(goldValue).put(observedValue, 0);
          }
  
          int currentValue = this.map.get(goldValue).get(observedValue);
          this.map.get(goldValue).put(observedValue, currentValue + times);
  
          total += times;
  
          if (goldValue.equals(observedValue)) {
              correct += times;
          }
      }
docs: Increases value of goldValue x observedValue n times
  
  @param goldValue     exp
  @param observedValue ac
  @param times         n-times