Source code for pm4py.algo.transformation.ocel.graphs.object_interaction_graph

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from pm4py.objects.ocel.obj import OCEL
from typing import Optional, Dict, Any, Set, Tuple

[docs]def apply(ocel: OCEL, parameters: Optional[Dict[Any, Any]] = None) -> Set[Tuple[str, str]]: """ Calculates the object interaction graph. Two objects are connected iff they are both related to an event of the OCEL. Parameters ----------------- ocel Object-centric event log parameters Parameters of the algorithm Returns ----------------- object_interaction_graph Object interaction graph (as set of tuples; undirected) """ if parameters is None: parameters = {} graph = set() ev_rel_obj = ocel.relations.groupby(ocel.event_id_column)[ocel.object_id_column].apply(list).to_dict() for ev in ev_rel_obj: rel_obj = ev_rel_obj[ev] for o1 in rel_obj: for o2 in rel_obj: if o1 < o2: graph.add((o1, o2)) return graph