Source code for pm4py.algo.analysis.marking_equation.algorithm

'''
    PM4Py – A Process Mining Library for Python
Copyright (C) 2024 Process Intelligence Solutions UG (haftungsbeschränkt)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or any later version.

This program 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see this software project's root or
visit <https://www.gnu.org/licenses/>.

Website: https://processintelligence.solutions
Contact: info@processintelligence.solutions
'''
from enum import Enum
from typing import Optional, Dict, Any

from pm4py.algo.analysis.marking_equation.variants import classic
from pm4py.objects.petri_net.obj import PetriNet, Marking
from pm4py.util import exec_utils




class Variants(Enum):
    CLASSIC = classic





def build(
    net: PetriNet,
    im: Marking,
    fm: Marking,
    variant=Variants.CLASSIC,
    parameters: Optional[Dict[Any, Any]] = None,
) -> Any:
    """
    Builds the marking equation out of a Petri net

    Parameters
    ---------------
    net
        Petri net
    im
        Initial marking
    fm
        Final marking
    variant
        Variant of the algorithm to use, possible values:
        - Variants.CLASSIC
    parameters
        Parameters of the algorithm, including:
        - Parameters.CASE_ID_KEY => attribute to use as case identifier
        - Parameters.ACTIVITY_KEY => attribute to use as activity
        - Parameters.COSTS => (if provided) the cost function (otherwise the default cost function is applied)
        - Parameters.INCIDENCE_MATRIX => (if provided) the incidence matrix of the Petri net
        - Parameters.A => (if provided) the A numpy matrix of the incidence matrix
        - Parameters.FULL_BOOTSTRAP_REQUIRED => The preset/postset of places/transitions need to be inserted
    """
    return exec_utils.get_variant(variant).build(
        net, im, fm, parameters=parameters
    )





def get_h_value(
    solver: Any,
    variant=Variants.CLASSIC,
    parameters: Optional[Dict[Any, Any]] = None,
) -> int:
    """
    Gets the heuristics value from the marking equation

    Parameters
    --------------
    solver
        Marking equation solver (class in this file)
    variant
        Variant of the algorithm to use, possible values:
        - Variants.CLASSIC
    parameters
        Possible parameters of the algorithm
    """
    return exec_utils.get_variant(variant).get_h_value(
        solver, parameters=parameters
    )