Longbing Cao Yanchang Zhao Fernando Figueiredo Yuming Ou Dan Luo Mining High Impact Exceptional Behavior Patterns. 56-63 2007 conf/pakdd/2007w PAKDD Workshops http://dx.doi.org/10.1007/978-3-540-77018-3_7 db/conf/pakdd/pakdd2007w.html#CaoZFOL07