Xu Xu Zhongfu Zhang Zhihong Feng Yansong Li Utilize Fuzzy Data Mining to Find the Living Pattern of Customers in Hotels. 60-64 2007 FSKD (2) http://dx.doi.org/10.1109/FSKD.2007.605 conf/fskd/2007-2 db/conf/fskd/fskd2007-2.html#XuZFL07