m_globalAbsDeviation), 1, 3)
m_globalDeviation), 1, 3)
  public String treeToString(int level) {    int		 i;    StringBuffer text = new StringBuffer();    if (!m_isLeaf) {      text.append("\n");      for (i = 1; i <= level; i++) {	text.append("|   ");      }       if (m_instances.attribute(m_splitAtt).name().charAt(0) != '[') {	text.append(m_instances.attribute(m_splitAtt).name() + " <= " 		    + Utils.doubleToString(m_splitValue, 1, 3) + " : ");      } else {	text.append(m_instances.attribute(m_splitAtt).name() + " false : ");      }       if (m_left != null) {	text.append(m_left.treeToString(level + 1));      } else {	text.append("NULL\n");      }      for (i = 1; i <= level; i++) {	text.append("|   ");      }       if (m_instances.attribute(m_splitAtt).name().charAt(0) != '[') {	text.append(m_instances.attribute(m_splitAtt).name() + " >  " 		    + Utils.doubleToString(m_splitValue, 1, 3) + " : ");      } else {	text.append(m_instances.attribute(m_splitAtt).name() + " true : ");      }       if (m_right != null) {	text.append(m_right.treeToString(level + 1));      } else {	text.append("NULL\n");      }    } else {      text.append("LM" + m_leafModelNum);      if (m_globalDeviation > 0.0) {	text	  .append(" (" + m_numInstances + "/" 		  + Utils.doubleToString((100.0 * m_rootMeanSquaredError /					     m_globalAbsDeviation), 1, 3) 		  + "%)\n");      } else {	text.append(" (" + m_numInstances + ")\n");      }     }     return text.toString();  } 