PPI Repository

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

Process where activity repetition is common.

It is desirable not to repeat activities.

act
actinst
case

Formula for practitioners

$1 - \frac{\sum _{c \in g} \mathit{A}(c)}{\mathit{I}(g)}$

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