 x in self.data.index.values
                                 if x not in training_index],:][df_training.columns]

        if self.target_label:
        
            df_training_pos=df_training[df_training[self.target_label]==str(self.target_label_positive)]
            df_training_neg=df_training[df_training[self.target_label]==str(self.target_label_negative)]
            Xpos_training=df_training_pos.drop(self.target_label,
                                               axis=1)\
                          