def get_variation_operator(name: str, **kwargs) -> VariationOperator:
"""Get the variaton operator class with the given name."""
name_to_cls = {
"deletion":
DeletionMutation,
"addition":
AdditionMutation,
"alternation":
Alternation,
"genesis":
Genesis,
"cloning":
Cloning,
# UMAD citation: https://dl.acm.org/citation.cfm?id=3205455.3205603
"umad":
VariationPipeline([AdditionMutation(0.09),
DeletionMutation(0.0826)]),
"umad-shrink":
VariationPipeline([AdditionMutation(0.09),
DeletionMutation(0.1)]),
"umad-grow":
VariationPipeline([AdditionMutation(0.09),
DeletionMutation(0.0652)])
}
op = name_to_cls.get(name, None)
if op is None:
raise ValueError(
"No varition operator '{nm}'. Supported names: {lst}.".format(
nm=name, lst=list(name_to_cls.keys())))
if isinstance(op, type):
op = instantiate_using(op, kwargs)
return op
def test_instantiate_using_optional():
args = {
"this": True
}
tmt = instantiate_using(ThisMaybeThat, args)
assert tmt.this
assert tmt.that == "default"
def test_instantiate_using_exact():
args = {
"a": 1,
"b": 2
}
p = instantiate_using(Pair, args)
assert p.a == 1
assert p.b == 2
def test_instantiate_using_extra():
args = {
"a": 1,
"b": 2,
"c": 3
}
p = instantiate_using(Pair, args)
assert p.a == 1
assert p.b == 2
def get_search_algo(name: str, **kwargs) -> SearchAlgorithm:
"""Return the search algorithm class with the given name."""
name_to_cls = {
"GA": GeneticAlgorithm,
"SA": SimulatedAnnealing,
# "ES": EvolutionaryStrategy,
}
_cls = name_to_cls.get(name, None)
if _cls is None:
raise ValueError(
"No search algo '{nm}'. Supported names: {lst}.".format(
nm=name, lst=list(name_to_cls.keys())))
return instantiate_using(_cls, kwargs)
def get_selector(name: str, **kwargs) -> Selector:
"""Get the selector class with the given name."""
name_to_cls = {
"roulette": FitnessProportionate,
"tournament": Tournament,
"lexicase": Lexicase,
"elite": Elite,
}
_cls = name_to_cls.get(name, None)
if _cls is None:
raise ValueError("No selector '{nm}'. Supported names: {lst}.".format(
nm=name, lst=list(name_to_cls.keys())))
return instantiate_using(_cls, kwargs)
def get_search_algo(name: str, **kwargs) -> SearchAlgorithm:
"""Return the search algorithm class with the given name."""
name_to_cls = {
"GA": GeneticAlgorithm,
"SA": SimulatedAnnealing,
# "ES": EvolutionaryStrategy,
}
_cls = name_to_cls.get(name, None)
if _cls is None:
raise ValueError("No search algo '{nm}'. Supported names: {lst}.".format(
nm=name,
lst=list(name_to_cls.keys())
))
return instantiate_using(_cls, kwargs)
def get_selector(name: str, **kwargs) -> Selector:
"""Get the selector class with the given name."""
name_to_cls = {
"roulette": FitnessProportionate,
"tournament": Tournament,
"lexicase": Lexicase,
"epsilon-lexicase": Lexicase(epsilon=True),
"elite": Elite,
}
selector = name_to_cls.get(name, None)
if selector is None:
raise ValueError("No selector '{nm}'. Supported names: {lst}.".format(
nm=name,
lst=list(name_to_cls.keys())
))
if isinstance(selector, type):
selector = instantiate_using(selector, kwargs)
return selector
def test_instantiate_using_optional():
args = {"this": True}
tmt = instantiate_using(ThisMaybeThat, args)
assert tmt.this
assert tmt.that == "default"
def test_instantiate_using_insufficient():
args = {"b": 2}
with pytest.raises(TypeError):
p = instantiate_using(Pair, args)
def test_instantiate_using_extra():
args = {"a": 1, "b": 2, "c": 3}
p = instantiate_using(Pair, args)
assert p.a == 1
assert p.b == 2
def test_instantiate_using_exact():
args = {"a": 1, "b": 2}
p = instantiate_using(Pair, args)
assert p.a == 1
assert p.b == 2
def test_instantiate_using_insufficient():
args = {
"b": 2
}
with pytest.raises(TypeError):
p = instantiate_using(Pair, args)
