prototorch/tests/test_functions.py
2020-04-08 22:47:08 +02:00

422 lines
17 KiB
Python

"""ProtoTorch functions test suite."""
import unittest
import numpy as np
import torch
from prototorch.functions import (activations, competitions, distances,
initializers, losses)
class TestActivations(unittest.TestCase):
def setUp(self):
self.flist = ['identity', 'sigmoid_beta', 'swish_beta']
self.x = torch.randn(1024, 1)
def test_registry(self):
self.assertIsNotNone(activations.ACTIVATIONS)
def test_funcname_deserialization(self):
for funcname in self.flist:
f = activations.get_activation(funcname)
iscallable = callable(f)
self.assertTrue(iscallable)
# def test_torch_script(self):
# for funcname in self.flist:
# f = activations.get_activation(funcname)
# self.assertIsInstance(f, torch.jit.ScriptFunction)
def test_callable_deserialization(self):
def dummy(x, **kwargs):
return x
for f in [dummy, lambda x: x]:
f = activations.get_activation(f)
iscallable = callable(f)
self.assertTrue(iscallable)
self.assertEqual(1, f(1))
def test_unknown_deserialization(self):
for funcname in ['blubb', 'foobar']:
with self.assertRaises(NameError):
_ = activations.get_activation(funcname)
def test_identity(self):
actual = activations.identity(self.x)
desired = self.x
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_sigmoid_beta1(self):
actual = activations.sigmoid_beta(self.x, beta=torch.tensor(1))
desired = torch.sigmoid(self.x)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_swish_beta1(self):
actual = activations.swish_beta(self.x, beta=torch.tensor(1))
desired = self.x * torch.sigmoid(self.x)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def tearDown(self):
del self.x
class TestCompetitions(unittest.TestCase):
def setUp(self):
pass
def test_wtac(self):
d = torch.tensor([[2., 3., 1.99, 3.01], [2., 3., 2.01, 3.]])
labels = torch.tensor([0, 1, 2, 3])
actual = competitions.wtac(d, labels)
desired = torch.tensor([2, 0])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_wtac_one_hot(self):
d = torch.tensor([[1.99, 3.01], [3., 2.01]])
labels = torch.tensor([[0, 1], [1, 0]])
actual = competitions.wtac(d, labels)
desired = torch.tensor([[0, 1], [1, 0]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_knnc_k1(self):
d = torch.tensor([[2., 3., 1.99, 3.01], [2., 3., 2.01, 3.]])
labels = torch.tensor([0, 1, 2, 3])
actual = competitions.knnc(d, labels, k=torch.tensor([1]))
desired = torch.tensor([2, 0])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def tearDown(self):
pass
class TestDistances(unittest.TestCase):
def setUp(self):
self.nx, self.mx = 32, 2048
self.ny, self.my = 8, 2048
self.x = torch.randn(self.nx, self.mx)
self.y = torch.randn(self.ny, self.my)
def test_manhattan(self):
actual = distances.lpnorm_distance(self.x, self.y, p=1)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=1,
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=2)
self.assertIsNone(mismatch)
def test_euclidean(self):
actual = distances.euclidean_distance(self.x, self.y)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=2,
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=3)
self.assertIsNone(mismatch)
def test_squared_euclidean(self):
actual = distances.squared_euclidean_distance(self.x, self.y)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=2,
keepdim=False,
)**2
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=2)
self.assertIsNone(mismatch)
def test_lpnorm_p0(self):
actual = distances.lpnorm_distance(self.x, self.y, p=0)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=0,
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=4)
self.assertIsNone(mismatch)
def test_lpnorm_p2(self):
actual = distances.lpnorm_distance(self.x, self.y, p=2)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=2,
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=4)
self.assertIsNone(mismatch)
def test_lpnorm_p3(self):
actual = distances.lpnorm_distance(self.x, self.y, p=3)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=3,
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=4)
self.assertIsNone(mismatch)
def test_lpnorm_pinf(self):
actual = distances.lpnorm_distance(self.x, self.y, p=float('inf'))
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=float('inf'),
keepdim=False,
)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=4)
self.assertIsNone(mismatch)
def test_omega_identity(self):
omega = torch.eye(self.mx, self.my)
actual = distances.omega_distance(self.x, self.y, omega=omega)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=2,
keepdim=False,
)**2
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=2)
self.assertIsNone(mismatch)
def test_lomega_identity(self):
omega = torch.eye(self.mx, self.my)
omegas = torch.stack([omega for _ in range(self.ny)], dim=0)
actual = distances.lomega_distance(self.x, self.y, omegas=omegas)
desired = torch.empty(self.nx, self.ny)
for i in range(self.nx):
for j in range(self.ny):
desired[i][j] = torch.nn.functional.pairwise_distance(
self.x[i].reshape(1, -1),
self.y[j].reshape(1, -1),
p=2,
keepdim=False,
)**2
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=2)
self.assertIsNone(mismatch)
def tearDown(self):
del self.x, self.y
class TestInitializers(unittest.TestCase):
def setUp(self):
self.flist = [
'zeros', 'ones', 'rand', 'randn', 'stratified_mean',
'stratified_random'
]
self.x = torch.tensor(
[[0, -1, -2], [10, 11, 12], [0, 0, 0], [2, 2, 2]],
dtype=torch.float32)
self.y = torch.tensor([0, 0, 1, 1])
self.gen = torch.manual_seed(42)
def test_registry(self):
self.assertIsNotNone(initializers.INITIALIZERS)
def test_funcname_deserialization(self):
for funcname in self.flist:
f = initializers.get_initializer(funcname)
iscallable = callable(f)
self.assertTrue(iscallable)
def test_callable_deserialization(self):
def dummy(x):
return x
for f in [dummy, lambda x: x]:
f = initializers.get_initializer(f)
iscallable = callable(f)
self.assertTrue(iscallable)
self.assertEqual(1, f(1))
def test_unknown_deserialization(self):
for funcname in ['blubb', 'foobar']:
with self.assertRaises(NameError):
_ = initializers.get_initializer(funcname)
def test_zeros(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.zeros(self.x, self.y, pdist)
desired = torch.zeros(2, 3)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_ones(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.ones(self.x, self.y, pdist)
desired = torch.ones(2, 3)
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_rand(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.rand(self.x, self.y, pdist)
desired = torch.rand(2, 3, generator=torch.manual_seed(42))
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_randn(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.randn(self.x, self.y, pdist)
desired = torch.randn(2, 3, generator=torch.manual_seed(42))
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_stratified_mean_equal1(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.stratified_mean(self.x, self.y, pdist)
desired = torch.tensor([[5., 5., 5.], [1., 1., 1.]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_stratified_random_equal1(self):
pdist = torch.tensor([1, 1])
actual, _ = initializers.stratified_random(self.x, self.y, pdist)
desired = torch.tensor([[0., -1., -2.], [2., 2., 2.]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_stratified_mean_equal2(self):
pdist = torch.tensor([2, 2])
actual, _ = initializers.stratified_mean(self.x, self.y, pdist)
desired = torch.tensor([[5., 5., 5.], [5., 5., 5.], [1., 1., 1.],
[1., 1., 1.]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_stratified_mean_unequal(self):
pdist = torch.tensor([1, 3])
actual, _ = initializers.stratified_mean(self.x, self.y, pdist)
desired = torch.tensor([[5., 5., 5.], [1., 1., 1.], [1., 1., 1.],
[1., 1., 1.]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def test_stratified_random_unequal(self):
pdist = torch.tensor([1, 3])
actual, _ = initializers.stratified_random(self.x, self.y, pdist)
desired = torch.tensor([[0., -1., -2.], [2., 2., 2.], [0., 0., 0.],
[0., 0., 0.]])
mismatch = np.testing.assert_array_almost_equal(actual,
desired,
decimal=5)
self.assertIsNone(mismatch)
def tearDown(self):
del self.x, self.y, self.gen
_ = torch.seed()
class TestLosses(unittest.TestCase):
def setUp(self):
pass
def test_glvq_loss_int_labels(self):
d = torch.stack([torch.ones(100), torch.zeros(100)], dim=1)
labels = torch.tensor([0, 1])
targets = torch.ones(100)
batch_loss = losses.glvq_loss(distances=d,
target_labels=targets,
prototype_labels=labels)
loss_value = torch.sum(batch_loss, dim=0)
self.assertEqual(loss_value, -100)
def test_glvq_loss_one_hot_labels(self):
d = torch.stack([torch.ones(100), torch.zeros(100)], dim=1)
labels = torch.tensor([[0, 1], [1, 0]])
wl = torch.tensor([1, 0])
targets = torch.stack([wl for _ in range(100)], dim=0)
batch_loss = losses.glvq_loss(distances=d,
target_labels=targets,
prototype_labels=labels)
loss_value = torch.sum(batch_loss, dim=0)
self.assertEqual(loss_value, -100)
def tearDown(self):
pass