Ejemplo n.º 1
0
  /**
   * get the vector of one instance
   *
   * @param p_Instance
   * @param p_Stat
   * @return
   */
  private svm_node[] getVector(IInstance p_Instance, IStatistic p_Stat, int[][] p_Indice) {
    String value = null;
    int kIndex = 0;
    int featureSize = p_Instance.size();
    Hashtable<Integer, Double> exist = new Hashtable<Integer, Double>();

    for (int fIndex = 0; fIndex < featureSize; fIndex++) {
      IFeature feature = p_Instance.getFeature(fIndex);
      kIndex = p_Stat.getIndex(feature.getKey());
      if (kIndex < 0) {
        continue;
      }
      if (ANumericFeature.class.isInstance(feature)) {
        exist.put(p_Indice[kIndex][0], Double.parseDouble(feature.getValue()));
      } else if (ABinaryFeature.class.isInstance(feature)) {
        if (feature.getValue().equals("1")) {
          exist.put(p_Indice[kIndex][0], 1.0);
        }
      } else {
        List<String> values = p_Stat.getValue(kIndex);
        value = feature.getValue();
        if (value == null || !p_Stat.contains(kIndex, value)) {
          value = p_Stat.getDefaultValue();
        }
        for (int i = 0; i < values.size(); i++) {
          if (values.get(i).equals(value)) {
            exist.put(p_Indice[kIndex][i], 1.0);
            break;
          }
        }
      }
    }
    ArrayList<Integer> indice = new ArrayList<Integer>(exist.keySet());
    Collections.sort(indice);
    svm_node[] retVal = new svm_node[exist.size()];
    for (int i = 0; i < indice.size(); i++) {
      retVal[i] = new svm_node();
      retVal[i].index = indice.get(i);
      retVal[i].value = exist.get(indice.get(i));
    }
    return retVal;
  }
Ejemplo n.º 2
0
 /**
  * load the statistic of p_iLexelt for each feature type in statistic if feature is binary keep it
  * else if feature is list and the number of values is less than 2 one new feature else set each
  * value as a new feature
  *
  * @param p_iLexelt lexelt
  * @return indices
  * @throws ClassNotFoundException cannot find the defined type
  */
 protected int[][] loadStatistic(ILexelt p_iLexelt) throws ClassNotFoundException {
   int[][] retIndice = null;
   int accuIndex = 1;
   if (p_iLexelt != null) {
     IStatistic stat = p_iLexelt.getStatistic();
     int keySize = stat.getKeys().size();
     retIndice = new int[keySize][0];
     int keyIndex = 0;
     for (keyIndex = 0; keyIndex < keySize; keyIndex++) {
       Class<?> type = Class.forName(stat.getType(keyIndex));
       if (ANumericFeature.class.isAssignableFrom(type)
           || ABinaryFeature.class.isAssignableFrom(type)) {
         retIndice[keyIndex] = new int[] {accuIndex++};
       } else {
         List<String> values = stat.getValue(keyIndex);
         retIndice[keyIndex] = new int[values.size()];
         for (int i = 0; i < values.size(); i++) {
           retIndice[keyIndex][i] = accuIndex++;
         }
       }
     }
   }
   return retIndice;
 }