1. A method, comprising: identifying a set of atomic events and respective priorities associated with the atomic events; identifying a set of composite events formed using respective subsets of the set of atomic events; and assigning respective priorities to the set of composite events such that respective priorities of composite events with substantially high-priority constituent atomic events are higher than respective priorities of composite events with lower-priority constituent atomic events and relative priorities of respective composite events are greater than priorities of respective subsets of the respective composite events.