Source code for pm4py.algo.transformation.ocel.features.events.event_start_ot

'''
    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
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.events[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