minus sign in process map

[Sedat1982]

Hello, when i get the process map according to the mean of days, it shows minues sign in some activities. what is the meaning of the minus sign in activites,? Thank you.

[gertjanssenswillen]

The performance map can show to types of information on flows: idle_time and inter_start_time. (argument flow_time in performance()) function
Idle_time is the time between end of activity and start of next activty (default)
Inter_start_time is the time between start of two consecutive activities

Idle time can be negative, if the next activity starts before the current one is finished. This is one of the drawbacks of process maps for process discovery, as it is not able to display concurrent activities.

In your example:

• the activity "Sistem ... on average (I assume, depends on your configuration). takes 1.23 days
• if it is followed by itself, that one average, the second one starts 4.5 days before the current one has finished (notice that this is not within the average duration of the activity, but is technically possible, as we are taking about a subset here)

Sth similar is true for the other activity.

Hope this is somewhat clear