PPI Repository

Number of times that any activity belonging to a subset of activities is instantiated again, after its first instantiation, in a case.

Process where rework occurs recurrently, but only the rework of some activities is of interest.

Minimizing rework is desirable.

act
actinst
case
type

Formula for practitioners

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

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