def test_set_packing_vqe(self):
""" set packing vqe test """
try:
# pylint: disable=import-outside-toplevel
from qiskit import Aer
except Exception as ex: # pylint: disable=broad-except
self.skipTest(
"Aer doesn't appear to be installed. Error: '{}'".format(
str(ex)))
return
wavefunction = TwoLocal(rotation_blocks='ry',
entanglement_blocks='cz',
reps=3,
entanglement='linear')
q_i = QuantumInstance(Aer.get_backend('qasm_simulator'),
seed_simulator=aqua_globals.random_seed,
seed_transpiler=aqua_globals.random_seed)
result = VQE(wavefunction,
SPSA(maxiter=200),
max_evals_grouped=2,
quantum_instance=q_i).compute_minimum_eigenvalue(
operator=self.qubit_op)
x = sample_most_likely(result.eigenstate)
ising_sol = set_packing.get_solution(x)
oracle = self._brute_force()
self.assertEqual(np.count_nonzero(ising_sol), oracle)
def test_set_packing(self):
""" set packing test """
algo = NumPyMinimumEigensolver()
result = algo.compute_minimum_eigenvalue(operator=self.qubit_op,
aux_operators=[])
x = sample_most_likely(result.eigenstate)
ising_sol = set_packing.get_solution(x)
np.testing.assert_array_equal(ising_sol, [0, 1, 1])
oracle = self._brute_force()
self.assertEqual(np.count_nonzero(ising_sol), oracle)