if (m_binarySplits) { ((BinC45ModelSelection)modSelection).cleanup(); } else { ((C45ModelSelection)modSelection).cleanup(); }
  public void buildClassifier(Instances instances)        throws Exception{    ModelSelection modSelection;	     if (m_binarySplits)      modSelection = new BinC45ModelSelection(m_minNumObj, instances);    else      modSelection = new C45ModelSelection(m_minNumObj, instances);    if (!m_reducedErrorPruning)      m_root = new C45PruneableClassifierTree(modSelection, !m_unpruned, m_CF,					    m_subtreeRaising);    else      m_root = new PruneableClassifierTree(modSelection, !m_unpruned, m_numFolds);    m_root.buildClassifier(instances);  }