def test_generate_from_value(self):
individual = Individual(
"(root (exp (tanh (- (tanh -8.049) (* 9.15 -6.848)))))")
self.assertEquals(
individual.get_value(),
"(root (exp (tanh (- (tanh -8.049) (* 9.15 -6.848)))))")
self.assertEquals(individual.get_formal(),
"exp(tanh((tanh((-8.049)) - (9.15 .* (-6.848)))))")
self.assertEquals(individual.get_complexity(), 20)
def test_parameter_controls_generate(self):
# save and restore original configuration
with saved(Config.get_instance()):
# random generation
Config.get_instance().set("POPULATION", "controls", "3")
individual = Individual.generate(individual_type=2,
config=Config.get_instance())
self.assertEqual(
individual.get_value(),
'(root (/ -3.0632 (cos -3.0973)) (exp (log (* (* S0 -0.8182) (sin -6.5057)))) (/ (/ -1.4169 (/ (* S0 S0) (cos -7.5988))) (log (cos (* S0 5.7489)))))'
)
formal_exp = individual.get_formal()
self.assertIsInstance(formal_exp, list)
self.assertEqual(len(formal_exp), 3)
self.assertEqual(formal_exp[0],
'(my_div((-3.0632),cos((-3.0973))))')
self.assertEqual(
formal_exp[1],
'exp(my_log(((S0 .* (-0.8182)) .* sin((-6.5057)))))')
self.assertEqual(
formal_exp[2],
'(my_div((my_div((-1.4169),(my_div((S0 .* S0),cos((-7.5988)))))),my_log(cos((S0 .* 5.7489)))))'
)
self.assertEqual(individual.get_complexity(), 46)
# generate individual with one control
Config.get_instance().set("POPULATION", "controls", "1")
individual = Individual("(root (cos (- 5.0161 (sin (log S0)))))",
Config.get_instance())
self.assertIsInstance(individual.get_formal(), str)
self.assertEqual(individual.get_formal(),
'cos((5.0161 - sin(my_log(S0))))')
self.assertEqual(individual.get_complexity(), 14)
# generate individual with 3 controls
Config.get_instance().set("POPULATION", "controls", "3")
individual = Individual(
'(root (exp 2.1314) (* (+ (sin -9.8591) (exp S0)) -9.4159) (exp (/ (/ 8.0187 -8.5969) S0)))',
Config.get_instance())
formal_exp = individual.get_formal()
self.assertIsInstance(formal_exp, list)
self.assertEqual(len(formal_exp), 3)
self.assertEqual(formal_exp[0], 'exp(2.1314)')
self.assertEqual(formal_exp[1],
'((sin((-9.8591)) + exp(S0)) .* (-9.4159))')
self.assertEqual(formal_exp[2],
'exp((my_div((my_div(8.0187,(-8.5969))),S0)))')
self.assertEqual(individual.get_complexity(), 29)
# generate individual with 5 controls
Config.get_instance().set("POPULATION", "controls", "5")
individual = Individual(
'(root (/ (exp (/ 8.2118 S0)) (* (* S0 (* 1.6755 -0.0699)) (log (exp -3.2288)))) S0 0.0290 (* (log (* (+ -5.0573 -6.2191) S0)) (/ (cos (log S0)) (cos (tanh 2.2886)))) (log -8.6795))',
Config.get_instance())
formal_exp = individual.get_formal()
self.assertIsInstance(formal_exp, list)
self.assertEqual(len(formal_exp), 5)
self.assertEqual(
formal_exp[0],
'(my_div(exp((my_div(8.2118,S0))),((S0 .* (1.6755 .* (-0.0699))) .* my_log(exp((-3.2288))))))'
)
self.assertEqual(formal_exp[1], 'S0')
self.assertEqual(formal_exp[2], '0.0290')
self.assertEqual(
formal_exp[3],
'(my_log((((-5.0573) + (-6.2191)) .* S0)) .* (my_div(cos(my_log(S0)),cos(tanh(2.2886)))))'
)
self.assertEqual(formal_exp[4], 'my_log((-8.6795))')
self.assertEqual(individual.get_complexity(), 64)
# generate individual with multiple simplifications
Config.get_instance().set("POPULATION", "controls", "3")
Config.get_instance().set("OPTIMIZATION", "simplify", "true")
individual = Individual(
'(root (exp 2.1314) (* (+ (sin -9.8591) (exp S0)) -9.4159) (exp (/ (/ 8.0187 -8.5969) S0)))',
Config.get_instance())
formal_exp = individual.get_formal()
self.assertIsInstance(formal_exp, list)
self.assertEqual(len(formal_exp), 3)
self.assertEqual(formal_exp[0], 'exp(2.1314)')
self.assertEqual(formal_exp[1],
'((sin((-9.8591)) + exp(S0)) .* (-9.4159))')
self.assertEqual(formal_exp[2],
'exp((my_div((my_div(8.0187,(-8.5969))),S0)))')