def test_sbx(self):
with open(os.path.join("resources", "crossover.json"),
encoding='utf-8') as f:
data = json.loads(f.read())
for i, e in enumerate(data):
Configuration.rand.random = MagicMock()
Configuration.rand.random.side_effect = e['rnd']
sbx = SimulatedBinaryCrossover(0.9, 15)
parents = np.array(e['parents'])[None, :, :]
children = sbx.do(ZDT4(), parents)
_children = np.array(e['children'])
is_equal = np.all(np.abs(children - _children) < 0.001)
if not is_equal:
print(i)
print(np.abs(children - _children))
self.assertTrue(is_equal)
import numpy as np from pymoo.operators.crossover.simulated_binary_crossover import SimulatedBinaryCrossover from pymoo.operators.sampling.random_sampling import FloatRandomSampling from pymoo.problems.single import Rastrigin problem = Rastrigin(n_var=30) crossover = SimulatedBinaryCrossover(eta=20) pop = FloatRandomSampling().do(problem, 2) parents = np.array([[0, 1]]) off = crossover.do(problem, pop, parents) print(off) ind_a = pop[0] ind_b = pop[1] off = crossover.do(problem, ind_a, ind_b) print(off)
