Dr Terry Halpin (of ORM fame) has published on BRCommunity.com a series of articles on temporal modeling. In his latest article he mentions the use of state models, as used in the TIBCO BusinessEvents CEP tool, but concentrates on some disjoint subclasses to describe role types of entities over time. Nonetheless, its an interesting series relevant to time-based event processing.
PS: Shame that BRCommunity is free-registration-required, but some good content on there…
