def test_input_transform():
k = Linear().transform(lambda x: x - 5)
# Verify that the kernel has the right properties.
assert not k.stationary
def f1(x):
return x
def f2(x):
return x**2
# Test equality.
assert EQ().transform(f1) == EQ().transform(f1)
assert EQ().transform(f1) != EQ().transform(f2)
assert EQ().transform(f1) != Matern12().transform(f1)
# Standard tests:
standard_kernel_tests(k)
# Test computation of the kernel.
k = Linear()
x1, x2 = B.randn(10, 2), B.randn(10, 2)
k2 = k.transform(lambda x: x**2)
k3 = k.transform(lambda x: x**2, lambda x: x - 5)
approx(k(x1**2, x2**2), k2(x1, x2))
approx(k(x1**2, x2 - 5), k3(x1, x2))
def test_input_transform():
k = Linear().transform(lambda x: x - 5)
assert not k.stationary
with pytest.raises(RuntimeError):
k.length_scale
with pytest.raises(RuntimeError):
k.var
with pytest.raises(RuntimeError):
k.period
def f1(x):
return x
def f2(x):
return x ** 2
# Test equality.
assert EQ().transform(f1) == EQ().transform(f1)
assert EQ().transform(f1) != EQ().transform(f2)
assert EQ().transform(f1) != Matern12().transform(f1)
# Standard tests:
standard_kernel_tests(k)
# Test computation of the kernel.
k = Linear()
x1, x2 = np.random.randn(10, 2), np.random.randn(10, 2)
k2 = k.transform(lambda x: x ** 2)
k3 = k.transform(lambda x: x ** 2, lambda x: x - 5)
allclose(k(x1 ** 2, x2 ** 2), k2(x1, x2))
allclose(k(x1 ** 2, x2 - 5), k3(x1, x2))
def test_input_transform():
k = Linear().transform(lambda x, c: x - 5)
yield eq, k.stationary, False
yield raises, RuntimeError, lambda: k.length_scale
yield raises, RuntimeError, lambda: k.var
yield raises, RuntimeError, lambda: k.period
def f1(x):
return x
def f2(x):
return x**2
# Test equality.
yield eq, EQ().transform(f1), EQ().transform(f1)
yield neq, EQ().transform(f1), EQ().transform(f2)
yield neq, EQ().transform(f1), Matern12().transform(f1)
# Standard tests:
for x in kernel_generator(k):
yield x
# Test computation of the kernel.
k = Linear()
x1, x2 = np.random.randn(10, 2), np.random.randn(10, 2)
k2 = k.transform(lambda x, c: x**2)
k3 = k.transform(lambda x, c: x**2, lambda x, c: x - 5)
yield assert_allclose, k(x1**2, x2**2), k2(x1, x2)
yield assert_allclose, k(x1**2, x2 - 5), k3(x1, x2)
