'''
This file is part of PM4Py (More Info: https://pm4py.fit.fraunhofer.de).
PM4Py is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
PM4Py is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with PM4Py. If not, see <https://www.gnu.org/licenses/>.
'''
from pm4py.objects.ocel.obj import OCEL
from typing import Optional, Dict, Any
[docs]def apply(ocel: OCEL, parameters: Optional[Dict[Any, Any]] = None):
"""
Adds for each object an one-hot-encoding of the activities performed in its lifecycle
Parameters
-----------------
ocel
OCEL
parameters
Parameters of the algorithm
Returns
-----------------
data
Values of the added features
feature_names
Names of the added features
"""
if parameters is None:
parameters = {}
ordered_objects = list(ocel.objects[ocel.object_id_column])
activities = list(set(ocel.events[ocel.event_activity].unique()))
lifecycle = ocel.relations.groupby(ocel.object_id_column)[ocel.event_activity].agg(list).to_dict()
data = []
feature_names = ["@@ocel_lif_activity_"+str(x) for x in activities]
for obj in ordered_objects:
lif = lifecycle[obj]
data.append([])
for act in activities:
data[-1].append(len(list(x for x in lif if x == act)))
return data, feature_names