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Implement MemorizingCutsComponent; STAB: switch to edge formulation

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This commit is contained in:
Alinson S. Xavier
2023-11-07 15:36:31 -06:00
parent b81815d35b
commit 8805a83c1c
25 changed files with 459 additions and 208 deletions
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6
miplearn/solvers/pyomo.py
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@@ -36,7 +36,6 @@ class PyomoModel(AbstractModel):
self._is_warm_start_available = False
self.lazy_separate = lazy_separate
self.lazy_enforce = lazy_enforce
self.lazy_constrs_: Optional[List[Any]] = None
if not hasattr(self.inner, "dual"):
self.inner.dual = Suffix(direction=Suffix.IMPORT)
self.inner.rc = Suffix(direction=Suffix.IMPORT)
@@ -131,15 +130,14 @@ class PyomoModel(AbstractModel):
self.solver.update_var(var)
def optimize(self) -> None:
self.lazy_constrs_ = []
self.lazy_ = []
if self.lazy_separate is not None:
assert (
self.solver_name == "gurobi_persistent"
), "Callbacks are currently only supported on gurobi_persistent"
def callback(_: Any, __: Any, where: int) -> None:
_gurobi_callback(self, where)
_gurobi_callback(self, self.solver, where)
self.solver.set_gurobi_param("PreCrush", 1)
self.solver.set_gurobi_param("LazyConstraints", 1)