pm4py.stats.get_minimum_self_distance_witnesses#
- pm4py.stats.get_minimum_self_distance_witnesses(log: EventLog | DataFrame, activity_key: str = 'concept:name', timestamp_key: str = 'time:timestamp', case_id_key: str = 'case:concept:name') Dict[str, Set[str]][source]#
This function derives the minimum self distance witnesses. The self distance of a in <a> is infinity, of a in <a,a> is 0, in <a,b,a> is 1, etc. The minimum self distance is the minimal observed self distance value in the event log. A ‘witness’ is an activity that witnesses the minimum self distance. For example, if the minimum self distance of activity a in some log L is 2, then, if trace <a,b,c,a> is in log L, b and c are a witness of a.
- Parameters:
log – Event Log to use
activity_key (
str) – attribute to be used for the activitytimestamp_key (
str) – attribute to be used for the timestampcase_id_key (
str) – attribute to be used as case identifier
- Return type:
Dict[str, Set[str]]
import pm4py msd_wit = pm4py.get_minimum_self_distance_witnesses(dataframe, activity_key='concept:name', case_id_key='case:concept:name', timestamp_key='time:timestamp')