Mohamed H. Ali Walid G. Aref Raja Bose Ahmed K. Elmagarmid Abdelsalam Helal Ibrahim Kamel Mohamed F. Mokbel NILE-PDT: A Phenomenon Detection and Tracking Framework for Data Stream Management Systems. 1295-1298 2005 conf/vldb/2005 VLDB http://www.vldb.org/conf/2005/papers/p1295-ali.pdf db/conf/vldb/vldb2005.html#AliABEHKM05