def testProbs(self):
c_0 = distribs.Discrete('x', [0])
c_1 = distribs.Discrete('x', [1])
d_0 = distribs.Mixture([c_0, c_1], probs=(0.3, 0.7))
d_1 = distribs.Mixture([c_0, c_1], probs=(0.0, 1.0))
for _ in range(5):
self.assertTrue(d_0.contains(d_0.sample()))
for _ in range(5):
self.assertEqual(d_1.sample(), {'x': 1})
def testSamplingContainmentSetMinusMultiple(self):
base = distribs.Continuous('x', 2, 10)
hold_out = distribs.Mixture([
distribs.Discrete('x', [1, 4, 6]),
distribs.Discrete('x', [3, 8, 9, 12]),
distribs.Continuous('x', 3, 5),
])
contained = [{'x': value} for value in [2.5, 5.5, 7, 9.5]]
not_contained = [{'x': value} for value in [4, 6, 9, 11]]
d = distribs.SetMinus(base, hold_out)
test_sampling_and_containment(self, d, contained, not_contained)
def testSamplingContainmentMixtureMultiple(self):
dists = [
distribs.Continuous('x', 0, 2),
distribs.Continuous('x', 1, 5),
distribs.Continuous('x', 9, 12),
distribs.Discrete('x', [7, 10]),
distribs.Discrete('x', [14]),
]
contained = [0.5, 4, 11, 7, 14]
not_contained = [5.5, 6, 8, 13]
d = distribs.Mixture(dists)
contained = [{'x': value} for value in contained]
not_contained = [{'x': value} for value in not_contained]
test_sampling_and_containment(self, d, contained, not_contained)
def testSamplingContainmentMixtureTwo(self, c_0, c_1, contained,
not_contained):
d = distribs.Mixture((c_0, c_1))
contained = [{'x': value} for value in contained]
not_contained = [{'x': value} for value in not_contained]
test_sampling_and_containment(self, d, contained, not_contained)
def testCornerUnion(self):
square_0 = distribs.Product([
distribs.Continuous('x', 0, 3),
distribs.Continuous('y', 0, 3),
])
hold_out_0 = distribs.Product([
distribs.Continuous('x', 1, 3),
distribs.Continuous('y', 0, 2),
])
square_1 = distribs.Product([
distribs.Continuous('x', 2, 5),
distribs.Continuous('y', 0, 3),
])
hold_out_1 = distribs.Product([
distribs.Continuous('x', 2, 4),
distribs.Continuous('y', 1, 3),
])
corner_0 = distribs.SetMinus(square_0, hold_out_0)
corner_1 = distribs.SetMinus(square_1, hold_out_1)
corner_union = distribs.Mixture([corner_0, corner_1])
contained = [
{
'x': 0.5,
'y': 0.5
},
{
'x': 0.5,
'y': 2.5
},
{
'x': 2.5,
'y': 2.5
},
{
'x': 2.5,
'y': 0.5
},
{
'x': 4.5,
'y': 0.5
},
{
'x': 4.5,
'y': 2.5
},
]
not_contained = [
{
'x': 1.5,
'y': 0.5
},
{
'x': 1.5,
'y': 1.5
},
{
'x': 2.5,
'y': 1.5
},
{
'x': 3.5,
'y': 1.5
},
{
'x': 3.5,
'y': 2.5
},
]
test_sampling_and_containment(self, corner_union, contained,
not_contained)
def testRaisesError(self):
c_0 = distribs.Discrete('x', [0])
c_1 = distribs.Discrete('y', [1])
with self.assertRaises(ValueError):
distribs.Mixture((c_0, c_1))