Source code for pm4py.algo.simulation.playout.petri_net.algorithm

from pm4py.algo.simulation.playout.petri_net.variants import extensive
from pm4py.algo.simulation.playout.petri_net.variants import (
    stochastic_playout,
    basic_playout,
)
from pm4py.util import exec_utils
from enum import Enum
from pm4py.objects.petri_net.obj import PetriNet, Marking
from typing import Optional, Dict, Any
from pm4py.objects.log.obj import EventLog




class Variants(Enum):
    BASIC_PLAYOUT = basic_playout
    STOCHASTIC_PLAYOUT = stochastic_playout
    EXTENSIVE = extensive



DEFAULT_VARIANT = Variants.BASIC_PLAYOUT
VERSIONS = {
    Variants.BASIC_PLAYOUT,
    Variants.EXTENSIVE,
    Variants.STOCHASTIC_PLAYOUT,
}




def apply(
    net: PetriNet,
    initial_marking: Marking,
    final_marking: Marking = None,
    parameters: Optional[Dict[Any, Any]] = None,
    variant=DEFAULT_VARIANT,
) -> EventLog:
    """
    Do the playout of a Petrinet generating a log

    Parameters
    -----------
    net
        Petri net to play-out
    initial_marking
        Initial marking of the Petri net
    final_marking
        (if provided) Final marking of the Petri net
    parameters
        Parameters of the algorithm
    variant
        Variant of the algorithm to use:
            - Variants.BASIC_PLAYOUT: selects random traces from the model, without looking at the
            frequency of the transitions
            - Variants.STOCHASTIC_PLAYOUT: selects random traces from the model, looking at the
            stochastic frequency of the transitions. Requires the provision of the stochastic map
            or the log.
            - Variants.EXTENSIVE: gets all the traces from the model. can be expensive
    """
    return exec_utils.get_variant(variant).apply(
        net,
        initial_marking,
        final_marking=final_marking,
        parameters=parameters,
    )