PPI Repository

One minus the ratio between the number of activities that occur in a group of cases, and the number of times that an activity is instantiated in a group of cases.

Process where activity repetition is common.

It is desirable not to repeat activities.

act
actinst
case

Formula for practitioners

$1 - \frac{\mathit{A}(g)}{\mathit{I}(g)}$

$\mathit{A}(g)$ returns the number of unique activities in group $g$.
$\mathit{I}(g)$ returns the total number of activity instances in group $g$.