data.deleteAttributeAt(0);
  public void buildClassifier(Instances train) throws Exception {    // can classifier handle the data?    getCapabilities().testWithFail(train);    // remove instances with missing class    train = new Instances(train);    train.deleteWithMissingClass();        if (m_Classifier == null) {      throw new Exception("A base classifier has not been specified!");    }    if (getDebug())      System.out.println("Start training ...");    Instances data = transform(train);     m_Classifier.buildClassifier(data);    if (getDebug())      System.out.println("Finish building model");  }		