PPI Repository

Number of unwanted activities that occur in a case.

Event log that contains activities whose execution is unwanted.

Unwanted activities negatively affect the quality of the process.

act
case

Formula for practitioners

$\displaystyle \sum_{a \in \mathit{act}(c)} \begin{cases} 1 & \text{if } a \in \mathit{Unwl} \\ 0 & \text{otherwise} \end{cases}$

$\mathit{Unwl}$ returns the set of unwanted activities.
$\mathit{act}(c)$ returns the set of activities that occurred in case $c$.