Source code for

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from pm4py.objects.ocel.obj import OCEL
from typing import Optional, Dict, Any
from pm4py.algo.filtering.ocel import ot_endpoints

[docs]def apply(ocel: OCEL, parameters: Optional[Dict[Any, Any]] = None): """ Assigns to each event a feature that is 1 when the event starts at least one object of a given type. Parameters ---------------- ocel OCEL parameters Parameters of the algorithm Returns ---------------- data Extracted feature values feature_names Feature names """ if parameters is None: parameters = {} ordered_events = list([ocel.event_id_column]) object_types = list(ocel.objects[ocel.object_type_column].unique()) map_endpoints = {} for ot in object_types: map_endpoints[ot] = set(ot_endpoints.filter_start_events_per_object_type(ocel, ot, parameters=parameters).events[ocel.event_id_column]) feature_names = ["@@event_start_"+ot for ot in object_types] data = [] for ev in ordered_events: data.append([]) for ot in object_types: data[-1].append(1 if ev in map_endpoints[ot] else 0) return data, feature_names