private float addCount(HashMap<String, Voca> map, String key) {
   float value = 1.0f;
   if (map.containsKey(key)) {
     Voca voca = map.get(key);
     value = voca.getCount() + 0.8f;
   }
   return value;
 }
  public void wordExtract(HashMap<String, Voca> map, Sentence st) {

    System.out.println("# [wordExtract()] 어절의 개수 : " + st.size());
    try {
      for (int i = 0; i < st.size() - 2; i++) {
        Voca voca = new Voca();
        String tag = st.get(i).getFirstMorp().getTag();
        String fullName = st.get(i).getExp();
        String vocaName = st.get(i).getFirstMorp().getString();
        String specialTag = st.get(i).get(st.get(i).size() - 1).getTag();

        // 체언인지 용언인지 구분
        if (isWord(tag)) {
          if (fullName.length() < 2) {
            continue;
          }
          if (isSpecial(specialTag)) {
            fullName = fullName.substring(0, fullName.length() - 1);
          }
          voca.setFullName(fullName);
          voca.setVocaName(vocaName);
          // 다음 단어가 부사와 같은 단어를 걸러내야됨
          Eojeol nextEojeol = null;
          StringBuffer temp = new StringBuffer();
          for (int j = i + 1; j < st.size() - 1; j++) {
            nextEojeol = st.get(j);
            String nextTag = nextEojeol.getFirstMorp().getTag();
            String nextFullName = nextEojeol.getExp();
            if (isWord(nextTag)) {
              if (nextFullName.length() < 2) {
                temp.append(nextFullName + " ");
                continue;
              }
              break;
            }
          }
          String next = "";
          if (isSpecial(nextEojeol.get(nextEojeol.size() - 1).getTag())) {
            next = nextEojeol.getExp().substring(0, nextEojeol.getExp().length() - 1);
            temp.append(next);
            voca.setRelatedName(temp.toString());
          } else {
            temp.append(nextEojeol.getExp());
            voca.setRelatedName(temp.toString());
          }
          String key = fullName + temp.toString();
          temp = null;
          voca.setCount(addCount(map, key));
          map.put(key, voca);
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    System.out.println("단어 개수 : " + map.size());
  }