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Line 3: It was first put forward by [[Wil van der Aalst\|van der Aalst]], Weijter and Măruşter <ref>van der Aalst, W M P and Weijter, A J M M and Maruster, L (2003). "Workflow Mining: Discovering process models from event logs", ''IEEE Transactions on Knowledge and Data Engineering'', vol 16</ref>. Several extensions or modifications of it have since been presented, which will be listed below. It constructs [[petri nets\|P/T nets]] with special properties ([[workflow net]]s) from event logs (as might be collected by an [[Enterprise resource planning\|ERP]] system). Each transition in the net corresponds to an observed task. ==Short description==

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