Byunggu Yu Seon Ho Kim Shayma Alkobaisi Wan D. Bae Thomas Bailey The Tornado Model: Uncertainty Model for Continuously Changing Data. 624-636 2007 conf/dasfaa/2007 DASFAA http://dx.doi.org/10.1007/978-3-540-71703-4_53 db/conf/dasfaa/dasfaa2007.html#YuKABB07