PPI Repository

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

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

$\frac{\mathit{RewSub}(g, \mathit{sub})}{\mathit{C}(g)}$

$\mathit{RewSub}(g, \mathit{sub})$ returns the total rework count for subset $\mathit{sub}$ in group $g$.
$\mathit{C}(g)$ returns the number of cases in group $g$.