def test_cmaes(self):
X_lower = np.array([0, 0])
X_upper = np.array([1, 1])
X = init_random_uniform(X_lower, X_upper, 10)
Y = np.sin(X[:, 0])[:, np.newaxis]
kernel = george.kernels.Matern52Kernel(np.ones([1, 1]),
ndim=2)
prior = TophatPrior(-2, 2)
model = GaussianProcess(kernel, prior=prior)
model.train(X, Y)
rec = PosteriorMeanAndStdOptimization(model, X_lower, X_upper,
method="cmaes")
startpoints = init_random_uniform(X_lower, X_upper, 10)
inc, inc_val = rec.estimate_incumbent(startpoints)
# Check shapes
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_lower.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
# Check if incumbent is in the bounds
assert not np.any([np.any(inc[:, i] < X_lower[i])
for i in range(X_lower.shape[0])])
assert not np.any([np.any(inc[:, i] > X_upper[i])
for i in range(X_upper.shape[0])])
def test_cmaes(self):
X_lower = np.array([0, 0])
X_upper = np.array([1, 1])
X = init_random_uniform(X_lower, X_upper, 10)
Y = np.sin(X[:, 0])[:, np.newaxis]
kernel = george.kernels.Matern52Kernel(np.ones([1, 1]),
ndim=2)
prior = TophatPrior(-2, 2)
model = GaussianProcess(kernel, prior=prior)
model.train(X, Y)
rec = PosteriorMeanAndStdOptimization(model, X_lower, X_upper,
method="cmaes")
startpoints = init_random_uniform(X_lower, X_upper, 10)
inc, inc_val = rec.estimate_incumbent(startpoints)
# Check shapes
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_lower.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
# Check if incumbent is in the bounds
assert not np.any([np.any(inc[:, i] < X_lower[i])
for i in range(X_lower.shape[0])])
assert not np.any([np.any(inc[:, i] > X_upper[i])
for i in range(X_upper.shape[0])])
# the bounds of the input space
branin = Branin()
# Instantiate the random forest. Branin does not have any categorical
# values thus we pass a np.zero vector here.
model = RandomForest(branin.types)
# Define the acquisition function
acquisition_func = EI(model,
X_upper=branin.X_upper,
X_lower=branin.X_lower,
par=0.1)
# Strategy of estimating the incumbent
rec = PosteriorMeanAndStdOptimization(model,
branin.X_lower,
branin.X_upper,
with_gradients=False)
# Define the maximizer
maximizer = CMAES(acquisition_func, branin.X_lower, branin.X_upper)
# Now we defined everything we need to instantiate the solver
bo = BayesianOptimization(acquisition_func=acquisition_func,
model=model,
maximize_func=maximizer,
task=branin,
incumbent_estimation=rec)
bo.run(100)
def test(self):
X_lower = np.array([0])
X_upper = np.array([1])
X = init_random_uniform(X_lower, X_upper, 10)
Y = np.sin(X)
kernel = george.kernels.Matern52Kernel(np.ones([1]), ndim=1)
prior = TophatPrior(-2, 2)
model = GaussianProcess(kernel, prior=prior)
model.train(X, Y)
x_test = init_random_uniform(X_lower, X_upper, 3)
# Shape matching predict
m, v = model.predict(x_test)
assert len(m.shape) == 2
assert m.shape[0] == x_test.shape[0]
assert m.shape[1] == 1
assert len(v.shape) == 2
assert v.shape[0] == x_test.shape[0]
assert v.shape[1] == x_test.shape[0]
#TODO: check gradients
# Shape matching function sampling
x_ = np.linspace(X_lower, X_upper, 10)
x_ = x_[:, np.newaxis]
funcs = model.sample_functions(x_, n_funcs=2)
assert len(funcs.shape) == 2
assert funcs.shape[0] == 2
assert funcs.shape[1] == x_.shape[0]
# Shape matching predict variance
x_test1 = np.array([np.random.rand(1)])
x_test2 = np.random.rand(10)[:, np.newaxis]
var = model.predict_variance(x_test1, x_test2)
assert len(var.shape) == 2
assert var.shape[0] == x_test2.shape[0]
assert var.shape[1] == 1
# Check compatibility with all acquisition functions
acq_func = EI(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = PI(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = LCB(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = InformationGain(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
# Check compatibility with all incumbent estimation methods
rec = BestObservation(model, X_lower, X_upper)
inc, inc_val = rec.estimate_incumbent(None)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanAndStdOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
def test(self):
X_lower = np.array([0])
X_upper = np.array([1])
X = init_random_uniform(X_lower, X_upper, 10)
Y = np.sin(X)
model = RandomForest(types=np.zeros([X_lower.shape[0]]))
model.train(X, Y)
x_test = init_random_uniform(X_lower, X_upper, 3)
# Shape matching predict
m, v = model.predict(x_test)
assert len(m.shape) == 2
assert m.shape[0] == x_test.shape[0]
assert m.shape[1] == 1
assert len(v.shape) == 2
assert v.shape[0] == x_test.shape[0]
assert v.shape[1] == 1
# Shape matching function sampling
x_ = np.linspace(X_lower, X_upper, 10)
x_ = x_[:, np.newaxis]
#funcs = model.sample_functions(x_, n_funcs=2)
#assert len(funcs.shape) == 2
#assert funcs.shape[0] == 2
#assert funcs.shape[1] == x_.shape[0]
# Check compatibility with all acquisition functions
acq_func = EI(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = PI(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = LCB(model, X_upper=X_upper, X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
# Check compatibility with all incumbent estimation methods
rec = BestObservation(model, X_lower, X_upper)
inc, inc_val = rec.estimate_incumbent(None)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanAndStdOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
def test(self):
X_lower = np.array([0])
X_upper = np.array([1])
X = init_random_uniform(X_lower, X_upper, 10)
Y = np.sin(X)
kernel = GPy.kern.Matern52(input_dim=1)
model = GPyModel(kernel)
model.train(X, Y)
x_test = init_random_uniform(X_lower, X_upper, 3)
# Shape matching predict
m, v = model.predict(x_test, full_cov=True)
assert len(m.shape) == 2
assert m.shape[0] == x_test.shape[0]
assert m.shape[1] == 1
assert len(v.shape) == 2
assert v.shape[0] == x_test.shape[0]
assert v.shape[1] == x_test.shape[0]
# Check gradients
dm, dv = model.predictive_gradients(x_test)
assert len(dm.shape) == 2
assert dm.shape[0] == x_test.shape[0]
assert dm.shape[1] == x_test.shape[1]
assert len(dv.shape) == 2
assert dv.shape[0] == x_test.shape[0]
assert dv.shape[1] == 1
# Shape matching function sampling
x_ = np.linspace(X_lower, X_upper, 10)
x_ = x_[:, np.newaxis]
funcs = model.sample_functions(x_, n_funcs=2)
assert len(funcs.shape) == 2
assert funcs.shape[0] == 2
assert funcs.shape[1] == x_.shape[0]
# Shape matching predict variance
x_test2 = np.array([np.random.rand(1)])
x_test1 = np.random.rand(10)[:, np.newaxis]
var = model.predict_variance(x_test1, x_test2)
assert len(var.shape) == 2
assert var.shape[0] == x_test1.shape[0]
assert var.shape[1] == 1
# Check compatibility with all acquisition functions
acq_func = EI(model,
X_upper=X_upper,
X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = PI(model,
X_upper=X_upper,
X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = LCB(model,
X_upper=X_upper,
X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
acq_func = InformationGain(model,
X_upper=X_upper,
X_lower=X_lower)
acq_func.update(model)
acq_func(x_test)
# Check compatibility with all incumbent estimation methods
rec = BestObservation(model, X_lower, X_upper)
inc, inc_val = rec.estimate_incumbent(None)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1
rec = PosteriorMeanAndStdOptimization(model, X_lower, X_upper)
startpoints = init_random_uniform(X_lower, X_upper, 4)
inc, inc_val = rec.estimate_incumbent(startpoints)
assert len(inc.shape) == 2
assert inc.shape[0] == 1
assert inc.shape[1] == X_upper.shape[0]
assert len(inc_val.shape) == 2
assert inc_val.shape[0] == 1
assert inc_val.shape[1] == 1