PPI Repository

Sum of the elapsed time for all times an activity is instantiated again, after its first instantiation, in any case in the event log.

Process where measuring the time spent on rework activities is of relevance.

Minimizing the time spent on reworking is desirable.

act
actinst
case
time
type

Formula for practitioners

$\mathit{LT}(a) - \sum _{c \in C} \mathit{filt}(c, a)$

$\mathit{LT}(a)$ returns the total lead time of activity $a$.
$\mathit{filt}(c, a)$ returns the lead time of the first instance of activity $a$ in case $c$.