Xingquan Zhu Xindong Wu Error awareness data mining. 269-274 2006 GrC http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=34297&arnumber=1635795&count=189&index=59 conf/grc/2006 db/conf/grc/grc2006.html#ZhuW06a