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In [[network management]], [[systems management]], [[application management]] and [[service management]], people usually refer instead to [[event correlation]]. As CEP engines, event correlation engines (''event correlators'') analyze a mass of events, pinpoint the most significant ones, and trigger actions. However, most of them do not produce new inferred events. Instead, they relate high-level events with low-level events.<ref>J.P. Martin-Flatin, G. Jakobson and L. Lewis, "Event Correlation in Integrated Management: Lessons Learned and Outlook", Journal of Network and Systems Management, Vol. 17, No. 4, December 2007.</ref>
[[Inference engine]]s, e.g., [[rule-based system|rule-based reasoning engine]]s, typically produce inferred information in [[artificial intelligence]]. However, they do not usually produce new information in the form of complex (i.e., inferred) events.
==Example==
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