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Number of times that an activity is instantiated again, after its first instantiation, in any case of the event log.

If the event log does not contain cost information, Rework Count can be used as a proxy for the cost performance of an activity.

Minimizing rework is desirable.

act
actinst
case
type

Formula for practitioners

$\sum _{c \in C} \mathit{max}(0, \mathit{count}(c, a) - 1)$

$\mathit{count}(c, a)$ returns the number of instances of activity $a$ in case $c$.