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Events are real-world occurrences that unfold over space and time. Event mining from multimedia streams improves the access and reuse of large media collections, and it has been an active area of research with notable recent progress. This paper contains a survey on the problems and solutions in event mining, approached from three aspects: Event description, event-modeling components, and current event mining systems. The authors present a general characterization of multimedia events, motivated by the maxim of five BW[s and one BH[ for reporting real-world events in journalism: When, where, who, what, why, and how.
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