A method for computing all occurrences of a compound event from occurrences of primitive events where the compound event is a defined combination of the primitive events. The method includes the steps of: (a) defining primitive event types; (b) defining combinations of the primitive event types as a...http://www.google.com/patents/US6941290?utm_source=gb-gplus-sharePatent US6941290 - Method for computing all occurrences of a compound event from occurrences of primitive events