class FitnessFunctionTest(unittest.TestCase):
def setUp(self):
values = [({'x': i , 'y': j}, 4 * i + 2 * j)
for i in range(0, 10)
for j in range(0, 10)]
self.f = FitnessFunction(values)
def test_exact_value(self):
answer = Node(Operations.PLUS,
Node(Operations.MULTIPLICATION,
left=Node(Operations.IDENTITY, value='x'),
right=Node(Operations.NUMBER, value=4)),
Node(Operations.MULTIPLICATION,
left=Node(Operations.IDENTITY, value='y'),
right=Node(Operations.NUMBER, value=2)))
e = Expression(root=answer, variables=['x', 'y'])
self.assertEqual(self.f.expression_value(e), 0.0)
def test_wrong_value(self):
wrong = Node(Operations.MINUS,
Node(Operations.MULTIPLICATION,
left=Node(Operations.IDENTITY, value='x'),
right=Node(Operations.NUMBER, value=4)),
Node(Operations.MULTIPLICATION,
left=Node(Operations.IDENTITY, value='y'),
right=Node(Operations.NUMBER, value=2)))
e = Expression(root=wrong, variables=['x', 'y'])
self.assertGreater(self.f.expression_value(e), 0.0)
def test_solve_is_not_crashing(self):
values = []
for i in range(0,5):
x = i
values.append(({'x': x}, x * x ))
f = FitnessFunction(values)
exchanger = SimpleRandomExchanger(
lambda: [Expression.generate_random(max_height=2, variables=['x'])
for i in range(0, 5)])
config = ExpressionsImmuneSystemConfig()
config.number_of_lymphocytes = 10
config.number_of_iterations = 5
immuneSystem = ExpressionsImmuneSystem(exact_values=values,
variables=['x'],
exchanger=exchanger,
config=config)
best = immuneSystem.solve()
self.assertGreaterEqual(f.expression_value(best), 0)
Shows progress bar. Progress is passed in percent.
"""
print('\r[{0}] {1}%'.format('#' * (progress // 10), progress), end='')
if __name__ == "__main__":
number_of_lymphocytes = 100
max_height = 4
DataFileStorageHelper.save_to_file(
'test_x_y.txt', ['x', 'y'],
lambda x, y: x * x + x * y * math.sin(x * y), 100)
variables, values = DataFileStorageHelper.load_from_file('test_x_y.txt')
f = FitnessFunction(values)
exchanger = SimpleRandomExchanger(lambda: [
Expression.generate_random(max_height=max_height, variables=variables)
for i in range(0, number_of_lymphocytes // 2)
])
config = ExpressionsImmuneSystemConfig()
results = []
iterations = 5
start = time.clock()
for i in range(0, iterations):
immuneSystem = ExpressionsImmuneSystem(exact_values=values,
variables=variables,
exchanger=exchanger,
config=config)
def setUp(self):
values = [({'x': i , 'y': j}, 4 * i + 2 * j)
for i in range(0, 10)
for j in range(0, 10)]
self.f = FitnessFunction(values)
def update_progress(progress:int):
"""
Shows progress bar. Progress is passed in percent.
"""
print('\r[{0}] {1}%'.format('#' * (progress // 10), progress), end='')
if __name__ == "__main__":
number_of_lymphocytes = 100
max_height = 4
DataFileStorageHelper.save_to_file('test_x_y.txt', ['x', 'y'], lambda x, y: x*x + x*y*math.sin(x*y), 100)
variables, values = DataFileStorageHelper.load_from_file('test_x_y.txt')
f = FitnessFunction(values)
exchanger = SimpleRandomExchanger(
lambda: [Expression.generate_random(max_height=max_height, variables=variables)
for i in range(0, number_of_lymphocytes // 2)])
config = ExpressionsImmuneSystemConfig()
results = []
iterations = 5
start = time.clock()
for i in range(0, iterations):
immuneSystem = ExpressionsImmuneSystem(exact_values=values,
variables=variables,
exchanger=exchanger,
config=config)
best = immuneSystem.solve()
