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Organize test fixtures; handle infeasibility in DropRedundant

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This commit is contained in:
Alinson S. Xavier
2021-02-02 10:24:51 -06:00
parent 8153dfc825
commit 31ca45036a
10 changed files with 112 additions and 51 deletions
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3
miplearn/solvers/gurobi.py
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@@ -342,7 +342,7 @@ class GurobiSolver(InternalSolver):
self.model.remove(constr)
return cobj
def is_constraint_satisfied(self, cobj, tol=1e-5):
def is_constraint_satisfied(self, cobj, tol=1e-6):
lhs, sense, rhs, name = cobj
if self.cb_where is not None:
lhs_value = lhs.getConstant()
@@ -378,6 +378,7 @@ class GurobiSolver(InternalSolver):
def relax(self) -> None:
assert self.model is not None
self.model.update()
self.model = self.model.relax()
self._update_vars()

2
miplearn/solvers/internal.py
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@@ -173,7 +173,7 @@ class InternalSolver(ABC):
pass
@abstractmethod
def is_constraint_satisfied(self, cobj: Constraint) -> bool:
def is_constraint_satisfied(self, cobj: Constraint, tol: float = 1e-6) -> bool:
"""
Returns True if the current solution satisfies the given constraint.
"""

2
miplearn/solvers/pyomo/base.py
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@@ -308,7 +308,7 @@ class BasePyomoSolver(InternalSolver):
def extract_constraint(self, cid: str) -> Constraint:
raise Exception("Not implemented")
def is_constraint_satisfied(self, cobj: Constraint) -> bool:
def is_constraint_satisfied(self, cobj: Constraint, tol: float = 1e-6) -> bool:
raise Exception("Not implemented")
def is_infeasible(self) -> bool: