def setUp(self):
lr = LinearRegression()
self.X = np.random.rand(40, 8)
self.y = np.random.randint(0, 2, size=40)
self.fs = GPFeatureSelection(mean_squared_error, [lr],
init_population_size=10, final_population_size=2,
init_dataset_size=10, final_dataset_size=20,
percent_features_first_selected=0.25,
num_generations=2,
prob_random_mutation=0.1)
self.fs10 = GPFeatureSelection(mean_squared_error, [lr],
init_population_size=25, final_population_size=5,
init_dataset_size=10, final_dataset_size=30,
percent_features_first_selected=0.25,
num_generations=10,
prob_random_mutation=0.1)
class TestGPFeatureSelection(TestCase):
def setUp(self):
lr = LinearRegression()
self.X = np.random.rand(40, 8)
self.y = np.random.randint(0, 2, size=40)
self.fs = GPFeatureSelection(mean_squared_error, [lr],
init_population_size=10, final_population_size=2,
init_dataset_size=10, final_dataset_size=20,
percent_features_first_selected=0.25,
num_generations=2,
prob_random_mutation=0.1)
self.fs10 = GPFeatureSelection(mean_squared_error, [lr],
init_population_size=25, final_population_size=5,
init_dataset_size=10, final_dataset_size=30,
percent_features_first_selected=0.25,
num_generations=10,
prob_random_mutation=0.1)
def test_fit2(self):
self.fs10.fit(self.X, self.y)
def test_fit(self):
self.fs.fit(self.X, self.y)
def test_update_population(self):
pop = self.fs.get_init_population(num_features=8)
self.fs.calc_population_fitnesses(pop, self.X, self.y, train_size=10)
self.fs.update_population(pop, self.X, self.y, k=0)
self.assertEqual(len(pop), 10)
pop = self.fs.update_population(pop, self.X, self.y, k=1)
self.assertEqual(len(pop), 2)
def test_pick_pairs_to_reproduce(self):
pop = self.fs.get_init_population(num_features=8)
self.fs.calc_population_fitnesses(pop, self.X, self.y, train_size=10)
pairs = self.fs.pick_pairs_to_reproduce(population=pop, num_pairs=4)
self.assertEqual(len(pairs), 4)
def test_calc_population_fitnesses(self):
pop = self.fs.get_init_population(num_features=8)
self.fs.calc_population_fitnesses(pop, self.X, self.y, 10)
for p in pop:
self.assertTrue(p.fitness is not None)
def test_do_mutations(self):
pop = self.fs.get_init_population(num_features=8)
self.fs.do_mutations(pop)
def test_get_init_population(self):
pop = self.fs.get_init_population(num_features=8)
self.assertEqual(len(pop), 10)
self.assertEqual(len(pop[0].features), 8)