r"""
Local Construction Degree Solver.
"""
# Copyright (c) 2024 Thinklab@SJTU
# ML4CO-Kit is licensed under Mulan PSL v2.
# You can use this software according to the terms and conditions of the Mulan PSL v2.
# You may obtain a copy of Mulan PSL v2 at:
# http://license.coscl.org.cn/MulanPSL2
# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
# EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
# MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
# See the Mulan PSL v2 for more details.
from ml4co_kit.optimizer.base import OptimizerBase
from ml4co_kit.task.base import TaskBase, TASK_TYPE
from ml4co_kit.solver.base import SolverBase, SOLVER_TYPE
from .lib.lc_degree.mcl_lc_degree import mcl_lc_degree
from .lib.lc_degree.mis_lc_degree import mis_lc_degree
from .lib.lc_degree.mvc_lc_degree import mvc_lc_degree
from .lib.lc_degree.mcut_lc_degree import mcut_lc_degree
[docs]class LcDegreeSolver(SolverBase):
"""
Local Construction Degree Solver
Last Update: 2026-05-26
"""
def __init__(
self,
impl_type: str = "pybind11",
optimizer: OptimizerBase = None
):
# Super Initialization
super(LcDegreeSolver, self).__init__(
solver_type=SOLVER_TYPE.LC_DEGREE, optimizer=optimizer
)
# Set Attributes
self.impl_type = impl_type
def _solve(self, task_data: TaskBase):
"""Solve the task data using Local Construction Degree Solver."""
if task_data.task_type == TASK_TYPE.MCL:
return mcl_lc_degree(task_data=task_data, impl_type=self.impl_type)
elif task_data.task_type == TASK_TYPE.MIS:
return mis_lc_degree(task_data=task_data, impl_type=self.impl_type)
elif task_data.task_type == TASK_TYPE.MVC:
return mvc_lc_degree(task_data=task_data, impl_type=self.impl_type)
elif task_data.task_type == TASK_TYPE.MCUT:
return mcut_lc_degree(task_data=task_data, impl_type=self.impl_type)
else:
raise ValueError(
f"Solver {self.solver_type} is not supported for {task_data.task_type}."
)