Complex Event

Synonyms

Composite event; Derived event

Definition

A complex event is an event derived from a collection of events by either aggregation or derivation function [3].

Key Points

A complex event [1, 2] is a derived event; it can be derived by various means:

• 1. Explicit concatenation of a collection of events,

  • Example: Create an event that contains all the events that are related to the 2008 USA presidential elections.

• 2. Derivation of an aggregated value from a collection of events from the same type.

  • Example: Create an event that contains the average, maximal and minimal value of a certain stock during a single trade day.

• 3. Derivation [4] of an event as a function of other events that is a result of event pattern detection.

  • Example: Whenever a sequence of three complain-events from the same customer occurs within a single week, create an event “angry customer” with the customer-id.

Note that this event may or may not contain the raw complain events.

Cross-References

• Complex Event...