PPI Repository

Percentage of times that any activity is instantiated again, after its first instantiation, in every case of a group of cases.

If the event log does not contain cost information, Rework Percentage can be used as a proxy for the cost performance of a group of cases.

Minimizing rework is desirable.

act
actinst
case
type

Formula for practitioners

$\frac{\mathit{RewC}(g)}{\mathit{I}(g)}$

$\mathit{RewC}(g)$ returns the rework count for group $g$.
$\mathit{I}(g)$ returns the total number of activity instances in group $g$.