Purdue University Purdue e-Pubs Computer Science Technical Reports Department of Computer Science 2005 Exploiting Predicate-window Semantics over Data Streams hanaa M. Ghanem Walid G. Aref Purdue University, aref@cs.purdue.edu Ahmed K . Elmagarmid Purdue University, ake@cs.purdue.edu Report Number: 05-007 his document has been made available through Purdue e-Pubs, a service of the Purdue University Libraries. Please contact epubs@purdue.edu for additional information. Ghanem, hanaa M.; Aref, Walid G.; and Elmagarmid, Ahmed K., "Exploiting Predicate-window Semantics over Data Streams" (2005). Computer Science Technical Reports. Paper 1622. htp://docs.lib.purdue.edu/cstech/1622