tensorflow/python/ops/nn_test.py
# Copyright 2015 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Tests for miscellaneous functionality in tensorflow.ops.nn."""
import functools
import math
from absl.testing import parameterized
import numpy as np
from tensorflow.python.eager import context
from tensorflow.python.eager import def_function
from tensorflow.python.framework import constant_op
from tensorflow.python.framework import dtypes
from tensorflow.python.framework import errors
from tensorflow.python.framework import ops
from tensorflow.python.framework import tensor_spec
from tensorflow.python.framework import test_util
from tensorflow.python.ops import array_ops
from tensorflow.python.ops import gradient_checker
from tensorflow.python.ops import gradient_checker_v2
from tensorflow.python.ops import math_ops
from tensorflow.python.ops import nn
from tensorflow.python.ops import nn_impl
from tensorflow.python.ops import nn_ops
from tensorflow.python.ops import partitioned_variables
from tensorflow.python.ops import stateful_random_ops
from tensorflow.python.ops import variable_scope
from tensorflow.python.ops import variables
import tensorflow.python.ops.nn_grad # pylint: disable=unused-import
from tensorflow.python.ops.nn_impl import _compute_sampled_logits
from tensorflow.python.ops.ragged import ragged_factory_ops
from tensorflow.python.platform import test as test_lib
class ZeroFractionTest(test_lib.TestCase):
def _ZeroFraction(self, x):
assert x.shape
total_elements = np.prod(x.shape)
nonzeros = np.count_nonzero(x.flatten())
return 1.0 - nonzeros / total_elements
@test_util.run_deprecated_v1
def testZeroFraction(self):
x_shape = [5, 17]
x_np = np.random.randint(0, 2, size=x_shape).astype(np.float32)
y_np = self._ZeroFraction(x_np)
x_tf = constant_op.constant(x_np)
x_tf.set_shape(x_shape)
y_tf = nn_impl.zero_fraction(x_tf)
y_tf_np = self.evaluate(y_tf)
eps = 1e-8
self.assertAllClose(y_tf_np, y_np, eps)
@test_util.run_deprecated_v1
def testZeroFractionEmpty(self):
x = np.zeros(0)
y = self.evaluate(nn_impl.zero_fraction(x))
self.assertTrue(np.isnan(y))
@test_util.run_deprecated_v1
def testZeroFraction2_27Zeros(self):
sparsity = nn_impl.zero_fraction(
array_ops.zeros([int(2**27 * 1.01)], dtype=dtypes.int8))
self.assertAllClose(1.0, self.evaluate(sparsity))
@test_util.run_deprecated_v1
def testZeroFraction2_27Ones(self):
sparsity = nn_impl.zero_fraction(
array_ops.ones([int(2**27 * 1.01)], dtype=dtypes.int8))
self.assertAllClose(0.0, self.evaluate(sparsity))
@test_util.run_deprecated_v1
def testUnknownSize(self):
value = array_ops.placeholder(dtype=dtypes.float32)
sparsity = nn_impl.zero_fraction(value)
with self.cached_session() as sess:
self.assertAllClose(0.25,
sess.run(sparsity, {value: [[0., 1.], [0.3, 2.]]}))
@test_util.run_all_in_graph_and_eager_modes
class SoftmaxTest(test_lib.TestCase, parameterized.TestCase):
def _softmax(self, x):
assert len(x.shape) == 2
if x.shape[1] == 0:
return x
m = x.max(1)[:, np.newaxis]
u = np.exp(x - m)
z = u.sum(1)[:, np.newaxis]
return u / z
def testSoftmax(self):
x_shape = [5, 10]
x_np = np.random.randn(*x_shape).astype(np.float32)
y_np = self._softmax(x_np)
x_tf = constant_op.constant(x_np)
y_tf = nn_ops.softmax_v2(x_tf)
y_tf_last_dim = nn_ops.softmax_v2(x_tf, 1)
y_tf_np = self.evaluate(y_tf)
y_tf_last_dim_np = self.evaluate(y_tf_last_dim)
eps = 1e-3
self.assertAllClose(y_tf_np, y_np, eps)
self.assertAllClose(y_tf_last_dim_np, y_np, eps)
def testSoftmaxAxes(self):
arr = np.linspace(0., 1, 12).reshape(3, 4)
x_neg_axis = nn_ops.softmax_v2(arr, axis=-2)
y_pos_axis = nn_ops.softmax_v2(arr, axis=0)
z_gt_axis = nn_ops.softmax_v2(arr, axis=0)
x_neg_axis_tf = self.evaluate(x_neg_axis)
y_pos_axis_tf = self.evaluate(y_pos_axis)
z_gt_axis_tf = self.evaluate(z_gt_axis)
eps = 1e-3
self.assertAllClose(x_neg_axis_tf, y_pos_axis_tf, eps)
self.assertAllClose(y_pos_axis_tf, z_gt_axis_tf, eps)
def testSoftmaxExtendType(self):
x_shape = [5, 10]
x_np = np.random.randn(*x_shape).astype(np.float32)
x_f32_tf = constant_op.constant(x_np)
x_bf16_tf = math_ops.cast(x_f32_tf, dtypes.bfloat16)
y_f32_tf = self.evaluate(nn_ops.softmax(x_f32_tf))
y_bf16_tf = self.evaluate(nn_ops.softmax(x_bf16_tf))
expected = math_ops.cast(y_f32_tf, dtypes.bfloat16)
tol = x_shape[1] * 1e-3
self.assertAllClose(y_bf16_tf, expected, rtol=tol, atol=tol)
@parameterized.parameters(((5, 10),), ((2, 3, 4),))
def testGradient(self, x_shape):
x_np = np.random.randn(*x_shape).astype(np.float64)
x_tf = constant_op.constant(x_np)
theoretical, numerical = gradient_checker_v2.compute_gradient(
nn_ops.softmax_v2, [x_tf])
self.assertAllClose(theoretical, numerical)
@test_util.run_all_in_graph_and_eager_modes
class LogPoissonLossTest(test_lib.TestCase):
def _log_poisson_loss(self, x, z, compute_full_loss=False):
lpl = np.exp(x) - z * x
if compute_full_loss:
stirling_approx = z * np.log(z) - z + 0.5 * np.log(2. * np.pi * z)
lpl += np.ma.masked_array(stirling_approx, mask=(z <= 1)).filled(0.)
return lpl
def testLogPoissonLoss(self):
x_shape = [5, 10]
x_np = np.random.randn(*x_shape).astype(np.float32)
z_np = np.random.randint(0, 5, size=x_shape).astype(np.float32)
y_np = self._log_poisson_loss(x_np, z_np, compute_full_loss=False)
y_np_stirling = self._log_poisson_loss(x_np, z_np, compute_full_loss=True)
y_tf = nn_impl.log_poisson_loss(z_np, x_np, compute_full_loss=False)
y_tf_stirling = nn_impl.log_poisson_loss(z_np, x_np, compute_full_loss=True)
y_tf_np = self.evaluate(y_tf)
y_tf_np_stirling = self.evaluate(y_tf_stirling)
eps = 1e-3
self.assertAllClose(y_tf_np, y_np, eps)
self.assertAllClose(y_tf_np_stirling, y_np_stirling, eps)
def testGradient(self):
x_shape = [5, 10]
x_np = np.random.randn(*x_shape).astype(np.float64)
z_np = np.random.randint(0, 5, size=x_shape).astype(np.float64)
with self.cached_session():
x_tf = constant_op.constant(x_np)
# TODO(b/241834841): Test with `compute_full_loss` set as True
theoretical, numerical = gradient_checker_v2.compute_gradient(
nn_impl.log_poisson_loss, [z_np, x_tf])
self.assertAllClose(theoretical, numerical)
@test_util.run_all_in_graph_and_eager_modes
class LogSoftmaxTest(test_lib.TestCase, parameterized.TestCase):
def _log_softmax(self, x):
assert len(x.shape) == 2
m = x.max(1)[:, np.newaxis]
u = x - m
return u - np.log(np.sum(np.exp(u), 1, keepdims=True))
def testLogSoftmax(self):
x_shape = [5, 10]
x_np = np.random.randn(*x_shape).astype(np.float32)
y_np = self._log_softmax(x_np)
x_tf = constant_op.constant(x_np)
y_tf = nn_ops.log_softmax_v2(x_tf)
y_tf_np = self.evaluate(y_tf)
eps = 1e-3
self.assertAllClose(y_tf_np, y_np, eps)
def testLogSoftmaxAxes(self):
arr = np.linspace(0., 1, 12).reshape(3, 4)
x_neg_axis = nn_ops.log_softmax_v2(arr, axis=-2)
y_pos_axis = nn_ops.log_softmax_v2(arr, axis=0)
z_gt_axis = nn_ops.log_softmax_v2(arr, axis=0)
x_neg_axis_tf = self.evaluate(x_neg_axis)
y_pos_axis_tf = self.evaluate(y_pos_axis)
z_gt_axis_tf = self.evaluate(z_gt_axis)
eps = 1e-3
self.assertAllClose(x_neg_axis_tf, y_pos_axis_tf, eps)
self.assertAllClose(y_pos_axis_tf, z_gt_axis_tf, eps)
@parameterized.parameters(((5, 10),), ((2, 3, 4),))
def testGradient(self, x_shape):
x_np = np.random.randn(*x_shape).astype(np.float64)
with self.cached_session():
x_tf = constant_op.constant(x_np)
theoretical, numerical = gradient_checker_v2.compute_gradient(
nn_ops.log_softmax_v2, [x_tf])
self.assertAllClose(theoretical, numerical)
@test_util.run_all_in_graph_and_eager_modes
class L2LossTest(test_lib.TestCase):
def testL2Loss(self):
for dtype in [dtypes.float32, dtypes.float64] + \
[dtypes.bfloat16] if test_util.is_gpu_available(
cuda_only=True) else []:
x = constant_op.constant([1.0, 0.0, 3.0, 2.0],
shape=[2, 2],
name="x",
dtype=dtype)
l2loss = nn_ops.l2_loss(x)
value = self.evaluate(l2loss)
self.assertAllClose(7.0, value)
def testGradient(self):
x_shape = [20, 7, 3]
np.random.seed(1) # Make it reproducible.
x_val = np.random.random_sample(x_shape).astype(np.float64)
with self.cached_session():
x = constant_op.constant(x_val, name="x")
theoretical, numerical = gradient_checker_v2.compute_gradient(
nn_ops.l2_loss, [x])
self.assertAllClose(theoretical, numerical)
@test_util.run_all_in_graph_and_eager_modes
class L2NormalizeTest(test_lib.TestCase):
def _l2Normalize(self, x, dim):
if isinstance(dim, list):
norm = np.linalg.norm(x, axis=tuple(dim))
for d in dim:
norm = np.expand_dims(norm, d)
return x / norm
else:
norm = np.apply_along_axis(np.linalg.norm, dim, x)
return x / np.expand_dims(norm, dim)
def testL2Normalize(self):
x_shape = [20, 7, 3]
np.random.seed(1)
x_np = np.random.random_sample(x_shape).astype(np.float32)
for dim in range(len(x_shape)):
y_np = self._l2Normalize(x_np, dim)
x_tf = constant_op.constant(x_np, name="x")
y_tf = nn_impl.l2_normalize(x_tf, dim)
self.assertAllClose(y_np, self.evaluate(y_tf))
def testL2NormalizeDimArray(self):
x_shape = [20, 7, 3]
np.random.seed(1)
x_np = np.random.random_sample(x_shape).astype(np.float32)
dim = [1, 2]
y_np = self._l2Normalize(x_np, dim)
x_tf = constant_op.constant(x_np, name="x")
y_tf = nn_impl.l2_normalize(x_tf, dim)
self.assertAllClose(y_np, self.evaluate(y_tf))
def testL2NormalizeGradient(self):
x_shape = [20, 7, 3]
np.random.seed(1)
x_np = np.random.random_sample(x_shape).astype(np.float64)
with self.cached_session():
x_tf = constant_op.constant(x_np, name="x")
# TODO(b/241834841): Test l2_normalize with `axis` set to other dims
theoretical, numerical = gradient_checker_v2.compute_gradient(
nn_impl.l2_normalize, [x_tf])
self.assertAllClose(theoretical, numerical)
def testL2NormalizeComplex(self):
x_shape = [20, 7, 3]
for dtype in [np.complex64, np.complex128]:
np.random.seed(1)
x_np = (
np.random.random_sample(x_shape).astype(dtype) +
np.random.random_sample(x_shape).astype(dtype) * 1j)
for dim in range(len(x_shape)):
y_np = self._l2Normalize(x_np, dim)
x_tf = constant_op.constant(x_np, name="x")
y_tf = nn_impl.l2_normalize(x_tf, dim)
self.assertAllClose(y_np, self.evaluate(y_tf))
DROPOUT_FNS = [
("stateful_v1", nn_ops.dropout),
("stateful_v2", nn_ops.dropout_v2),
("stateless", functools.partial(nn_ops.stateless_dropout, seed=(1, 2))),
("stateless_philox", functools.partial(
nn_ops.stateless_dropout, seed=(1, 2), rng_alg="philox")),
("generator", functools.partial( # pylint: disable=g-long-lambda
nn_ops.general_dropout, uniform_sampler=lambda shape, dtype: ( # pylint: disable=g-long-lambda
stateful_random_ops.Generator.from_seed(1).uniform(
shape=shape, dtype=dtype)))),
]
class DropoutTest(test_lib.TestCase, parameterized.TestCase):
@parameterized.named_parameters(
("_%s_%s_%s" % (case_name, use_noise_shape, keep_prob), case_name, # pylint: disable=g-complex-comprehension
dropout_fn, use_noise_shape, keep_prob)
for keep_prob in [0.1, 0.5, 0.8]
for use_noise_shape in ["no", "concrete", "partial"]
for case_name, dropout_fn in DROPOUT_FNS)
def testDropout(self, case_name, dropout_fn, use_noise_shape, keep_prob):
# Runs dropout with 0-1 tensor 10 times, sum the number of ones and validate
# that it is producing approximately the right number of ones over a large
# number of samples, based on the keep probability.
if "generator" in case_name and not context.executing_eagerly():
self.skipTest("tf.random.Generator can only be used in TF2.")
if use_noise_shape == "no":
x_dim = 70
y_dim = 30
else:
x_dim = 70 * 30
y_dim = 3
num_iter = 10
t = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
if use_noise_shape == "no":
noise_shape = None
elif use_noise_shape == "concrete":
noise_shape = [x_dim, 1]
else:
noise_shape = [None, 1]
dropout = dropout_fn(t, rate=(1 - keep_prob), noise_shape=noise_shape)
final_count = 0
self.assertEqual([x_dim, y_dim], dropout.get_shape())
for _ in range(0, num_iter):
value = self.evaluate(dropout)
final_count += np.count_nonzero(value)
# Verifies that there are only two values: 0 and 1/keep_prob.
sorted_value = np.unique(np.sort(value))
self.assertEqual(0, sorted_value[0])
self.assertAllClose(1 / keep_prob, sorted_value[1])
# Check that we are in the 15% error range
expected_count = x_dim * y_dim * keep_prob * num_iter
rel_error = math.fabs(final_count - expected_count) / expected_count
self.assertLess(rel_error, 0.15)
@parameterized.named_parameters(
("_%s_%s" % (case_name, keep_prob), case_name, dropout_fn, keep_prob) # pylint: disable=g-complex-comprehension
for keep_prob in [0.1, 0.5, 0.8]
for case_name, dropout_fn in DROPOUT_FNS)
def testShapedDropoutCorrelation(self, case_name, dropout_fn, keep_prob):
# Runs a shaped dropout and tests that the correlations are correct.
if "generator" in case_name and not context.executing_eagerly():
self.skipTest("tf.random.Generator can only be used in TF2.")
x_dim = 40
y_dim = 30
num_iter = 10
t = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
dropout = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[x_dim, 1])
self.assertEqual([x_dim, y_dim], dropout.get_shape())
for _ in range(0, num_iter):
value = self.evaluate(dropout)
# Verifies that each row has only one type of activation.
for i in range(x_dim):
sorted_value = np.unique(np.sort(value[i, :]))
self.assertEqual(sorted_value.size, 1)
@parameterized.named_parameters(
("_%s_%s_%s" % (case_name, keep_prob, use_keep_prob), case_name, # pylint: disable=g-complex-comprehension
dropout_fn, keep_prob, use_keep_prob)
for use_keep_prob in [False, True]
for keep_prob in [0.1, 0.5, 0.8]
for case_name, dropout_fn in DROPOUT_FNS)
def testDropoutPlaceholderRateAndKeepProb(self, case_name, dropout_fn,
keep_prob, use_keep_prob):
# Runs dropout with 0-1 tensor 10 times, sum the number of ones and validate
# that it is producing approximately the right number of ones over a large
# number of samples, based on the keep probability.
if use_keep_prob and case_name != "stateful_v1":
self.skipTest("Only V1 `dropout` has the `keep_prob` argument.")
if "generator" in case_name and not context.executing_eagerly():
self.skipTest("tf.random.Generator can only be used in TF2.")
x_dim = 70
y_dim = 30
num_iter = 10
t = constant_op.constant(
1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
final_count = 0
for _ in range(0, num_iter):
if use_keep_prob:
dropout = dropout_fn(t, keep_prob=keep_prob)
else:
dropout = dropout_fn(t, rate=1 - keep_prob)
self.assertEqual([x_dim, y_dim], dropout.get_shape())
value = self.evaluate(dropout)
final_count += np.count_nonzero(value)
# Verifies that there are only two values: 0 and 1/keep_prob.
sorted_value = np.unique(np.sort(value))
self.assertEqual(0, sorted_value[0])
self.assertAllClose(1 / keep_prob, sorted_value[1])
# Check that we are in the 15% error range
expected_count = x_dim * y_dim * keep_prob * num_iter
rel_error = math.fabs(final_count - expected_count) / expected_count
self.assertLess(rel_error, 0.15)
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
@test_util.run_deprecated_v1
def testShapedDropoutUnknownShape(self, dropout_fn):
x_dim = 40
y_dim = 30
keep_prob = 0.5
x = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
dropout_x = dropout_fn(
x,
rate=(1 - keep_prob),
noise_shape=array_ops.placeholder(dtypes.int32))
self.assertEqual(x.get_shape(), dropout_x.get_shape())
@parameterized.named_parameters(
("_%s_%s" % (case_name, use_keep_prob), case_name, dropout_fn, # pylint: disable=g-complex-comprehension
use_keep_prob)
for use_keep_prob in [False, True]
for case_name, dropout_fn in DROPOUT_FNS)
@test_util.run_deprecated_v1
def testInvalidRateAndKeepProb(self, case_name, dropout_fn, use_keep_prob):
if use_keep_prob and case_name != "stateful_v1":
self.skipTest("Only V1 `dropout` has the `keep_prob` argument.")
if use_keep_prob:
fn = lambda x, y: dropout_fn(x, keep_prob=y)
else:
fn = lambda x, y: dropout_fn(x, rate=y)
x_dim = 40
y_dim = 30
t = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
with self.assertRaises(ValueError):
fn(t, -1.0)
with self.assertRaises(ValueError):
fn(t, 1.1)
with self.assertRaises(ValueError):
fn(t, [0.0, 1.0])
with self.assertRaises(ValueError):
fn(t, array_ops.placeholder(dtypes.float64))
with self.assertRaises(ValueError):
fn(t, array_ops.placeholder(dtypes.float32, shape=[2]))
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
def testLargeRate(self, dropout_fn):
x_dim = 40
y_dim = 30
t = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
_ = dropout_fn(t, rate=0.9)
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
def testVariableRef(self, dropout_fn):
x = variable_scope.get_variable("x", shape=[10, 10], dtype=dtypes.float32)
_ = dropout_fn(x, rate=0.1)
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
@test_util.run_deprecated_v1
def testShapedDropoutShapeError(self, dropout_fn):
# Runs shaped dropout and verifies an error is thrown on misshapen noise.
x_dim = 40
y_dim = 30
keep_prob = 0.5
t = constant_op.constant(1.0, shape=[x_dim, y_dim], dtype=dtypes.float32)
with self.assertRaises(ValueError):
_ = dropout_fn(
t, rate=(1 - keep_prob), noise_shape=[x_dim, y_dim + 10])
with self.assertRaises(ValueError):
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[x_dim, y_dim, 5])
with self.assertRaises(ValueError):
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[x_dim + 3])
with self.assertRaises(ValueError):
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[x_dim])
# test that broadcasting proceeds
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[y_dim])
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[1, y_dim])
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[x_dim, 1])
_ = dropout_fn(t, rate=(1 - keep_prob), noise_shape=[1, 1])
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
def testNoDropout(self, dropout_fn):
x = array_ops.zeros((5,))
y = dropout_fn(x, rate=0)
self.assertAllEqual(x, y)
@parameterized.named_parameters(
("_%s" % case_name, dropout_fn)
for case_name, dropout_fn in DROPOUT_FNS)
def testDropoutWithIntegerInputs(self, dropout_fn):
x = constant_op.constant([1, 1, 1, 1, 1])
with self.assertRaises(ValueError):
_ = dropout_fn(x, rate=0.5)
@test_util.run_all_without_tensor_float_32(
"Tests _compute_sampled_logits and related functions, which call matmul")
class ComputeSampledLogitsTest(test_lib.TestCase):
def setUp(self):
self._eps = 1e-3
def _GenerateTestData(self, num_classes, dim, batch_size, num_true, labels,
sampled, subtract_log_q):
"""Randomly generates input/output data for a single test case.
This function returns numpy constants for use in a test case.
Args:
num_classes: An int. The number of embedding classes in the test case.
dim: An int. The dimension of the embedding.
batch_size: An int. The batch size.
num_true: An int. The number of target classes per training example.
labels: A list of batch_size * num_true ints. The target classes.
sampled: A list of indices in [0, num_classes).
subtract_log_q: A bool corresponding to the parameter in
_compute_sampled_logits().
Returns:
weights: Embedding weights to use as test input. It is a numpy array
of shape [num_classes, dim]
biases: Embedding biases to use as test input. It is a numpy array
of shape [num_classes].
hidden_acts: Forward activations of the network to use as test input.
It is a numpy array of shape [batch_size, dim].
sampled_vals: A tuple based on `sampled` to use as test input in the
format returned by a *_candidate_sampler function.
exp_logits: The output logits expected from _compute_sampled_logits().
It is a numpy array of shape [batch_size, num_true + len(sampled)].
exp_labels: The output labels expected from _compute_sampled_logits().
It is a numpy array of shape [batch_size, num_true + len(sampled)].
"""
weights = np.random.randn(num_classes, dim).astype(np.float32)
biases = np.random.randn(num_classes).astype(np.float32)
hidden_acts = np.random.randn(batch_size, dim).astype(np.float32)
true_exp = np.full([batch_size, 1], fill_value=0.5, dtype=np.float32)
sampled_exp = np.full([len(sampled)], fill_value=0.5, dtype=np.float32)
sampled_vals = (sampled, true_exp, sampled_exp)
sampled_w, sampled_b = weights[sampled], biases[sampled]
true_w, true_b = weights[labels], biases[labels]
true_logits = np.sum(
hidden_acts.reshape((batch_size, 1, dim)) * true_w.reshape(
(batch_size, num_true, dim)),
axis=2)
true_b = true_b.reshape((batch_size, num_true))
true_logits += true_b
sampled_logits = np.dot(hidden_acts, sampled_w.T) + sampled_b
if subtract_log_q:
true_logits -= np.log(true_exp)
sampled_logits -= np.log(sampled_exp[np.newaxis, :])
exp_logits = np.concatenate([true_logits, sampled_logits], axis=1)
exp_labels = np.hstack(
(np.ones_like(true_logits) / num_true, np.zeros_like(sampled_logits)))
return weights, biases, hidden_acts, sampled_vals, exp_logits, exp_labels
def _ShardTestEmbeddings(self, weights, biases, num_shards):
"""Shards the weights and biases returned by _GenerateTestData.
Args:
weights: The weights returned by _GenerateTestData.
biases: The biases returned by _GenerateTestData.
num_shards: The number of shards to create.
Returns:
sharded_weights: A list of size `num_shards` containing all the weights.
sharded_biases: A list of size `num_shards` containing all the biases.
"""
with ops.Graph().as_default() as g:
sharded_weights = variable_scope.get_variable(
"w",
partitioner=partitioned_variables.fixed_size_partitioner(num_shards),
initializer=constant_op.constant(weights))
sharded_biases = variable_scope.get_variable(
"b",
partitioner=partitioned_variables.fixed_size_partitioner(num_shards),
initializer=constant_op.constant(biases))
with self.session(graph=g) as sess:
self.evaluate(variables.global_variables_initializer())
return self.evaluate([list(sharded_weights), list(sharded_biases)])
def testShapes(self):
np.random.seed(0)
num_classes = 5
batch_size = 3
for num_true in range(1, 5):
labels = np.random.randint(
low=0, high=num_classes, size=batch_size * num_true)
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=num_true,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=False)
logits_tensor, labels_tensor = _compute_sampled_logits(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(
labels, dtype=dtypes.int64, shape=(batch_size, num_true)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=num_true,
sampled_values=sampled_vals,
subtract_log_q=False,
remove_accidental_hits=False,
partition_strategy="div",
name="sampled_logits_basic_num_true_%d" % num_true)
got_logits, got_labels = self.evaluate([logits_tensor, labels_tensor])
self.assertEqual(exp_logits.shape, got_logits.shape, self._eps)
self.assertEqual(exp_labels.shape, got_labels.shape, self._eps)
def testBasic(self):
"""Without accidental hit removal or subtract_log_q."""
np.random.seed(0)
num_classes = 5
batch_size = 3
for num_true in range(1, 5):
labels = np.random.randint(
low=0, high=num_classes, size=batch_size * num_true)
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=num_true,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=False)
logits_tensor, labels_tensor = _compute_sampled_logits(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(
labels, dtype=dtypes.int64, shape=(batch_size, num_true)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=num_true,
sampled_values=sampled_vals,
subtract_log_q=False,
remove_accidental_hits=False,
partition_strategy="div",
name="sampled_logits_basic_num_true_%d" % num_true)
got_logits, got_labels = self.evaluate([logits_tensor, labels_tensor])
self.assertAllClose(exp_logits, got_logits, self._eps)
self.assertAllClose(exp_labels, got_labels, self._eps)
def testAccidentalHitRemoval(self):
"""With accidental hit removal, no subtract_log_q."""
np.random.seed(0)
num_classes = 5
batch_size = 3
sampled = [1, 0, 2, 3]
for num_true in range(1, 5):
labels = np.random.randint(
low=0, high=num_classes, size=batch_size * num_true)
(weights, biases, hidden_acts, sampled_vals, _,
_) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=num_true,
labels=labels,
sampled=sampled,
subtract_log_q=False)
logits_tensor, _ = _compute_sampled_logits(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(
labels, dtype=dtypes.int64, shape=(batch_size, num_true)),
inputs=constant_op.constant(hidden_acts),
num_sampled=len(sampled),
num_classes=num_classes,
num_true=num_true,
sampled_values=sampled_vals,
subtract_log_q=False,
remove_accidental_hits=True,
partition_strategy="div",
name="sampled_logits_accidental_hit_removal_num_true_%d" % num_true)
# Test that the exponentiated logits of accidental hits are near 0.
# First we need to find the hits in this random test run:
labels_reshape = labels.reshape((batch_size, num_true))
got_logits = self.evaluate(logits_tensor)
for row in range(batch_size):
row_labels = labels_reshape[row, :]
for col in range(len(sampled)):
if sampled[col] in row_labels:
# We need to add the num_true_test offset into logits_*
self.assertNear(
np.exp(got_logits[row, col + num_true]), 0., self._eps)
def testSubtractLogQ(self):
"""With subtract_log_q, no accidental hit removal."""
np.random.seed(0)
num_classes = 5
batch_size = 3
for num_true in range(1, 5):
labels = np.random.randint(
low=0, high=num_classes, size=batch_size * num_true)
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=num_true,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=True)
logits_tensor, labels_tensor = _compute_sampled_logits(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(
labels, dtype=dtypes.int64, shape=(batch_size, num_true)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=num_true,
sampled_values=sampled_vals,
subtract_log_q=True,
remove_accidental_hits=False,
partition_strategy="div",
name="sampled_logits_subtract_log_q_num_true_%d" % num_true)
got_logits, got_labels = self.evaluate([logits_tensor, labels_tensor])
self.assertAllClose(exp_logits, got_logits, self._eps)
self.assertAllClose(exp_labels, got_labels, self._eps)
def testSharded(self):
"""With sharded weights and sharded biases."""
np.random.seed(0)
num_classes = 5
batch_size = 3
for num_true in range(1, 5):
labels = np.random.randint(
low=0, high=num_classes, size=batch_size * num_true)
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=num_true,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=False)
weight_shards, bias_shards = self._ShardTestEmbeddings(
weights, biases, num_shards=3)
logits_tensor, labels_tensor = _compute_sampled_logits(
weights=[constant_op.constant(shard) for shard in weight_shards],
biases=[constant_op.constant(shard) for shard in bias_shards],
labels=constant_op.constant(
labels, dtype=dtypes.int64, shape=(batch_size, num_true)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=num_true,
sampled_values=sampled_vals,
subtract_log_q=False,
remove_accidental_hits=False,
partition_strategy="div",
name="sampled_logits_sharded_num_true_%d" % num_true)
got_logits, got_labels = self.evaluate([logits_tensor, labels_tensor])
self.assertAllClose(exp_logits, got_logits, self._eps)
self.assertAllClose(exp_labels, got_labels, self._eps)
def testNCELoss(self):
# A simple test to verify the numerics.
def _SigmoidCrossEntropyWithLogits(logits, targets):
# logits, targets: float arrays of the same shape.
assert logits.shape == targets.shape
pred = 1. / (1. + np.exp(-logits))
eps = 0.0001
pred = np.minimum(np.maximum(pred, eps), 1 - eps)
return -targets * np.log(pred) - (1. - targets) * np.log(1. - pred)
np.random.seed(0)
num_classes = 5
batch_size = 3
labels = [0, 1, 2]
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=1,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=True)
exp_nce_loss = np.sum(
_SigmoidCrossEntropyWithLogits(exp_logits, exp_labels), 1)
got_nce_loss = nn_impl.nce_loss_v2(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(labels, shape=(batch_size, 1)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=1,
sampled_values=sampled_vals)
self.assertAllClose(exp_nce_loss, self.evaluate(got_nce_loss), 1e-4)
# Test with sharded weights and sharded biases.
weight_shards, bias_shards = self._ShardTestEmbeddings(
weights, biases, num_shards=3)
got_nce_loss = nn_impl.nce_loss_v2(
weights=[constant_op.constant(shard) for shard in weight_shards],
biases=[constant_op.constant(shard) for shard in bias_shards],
labels=constant_op.constant(labels, shape=(batch_size, 1)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=1,
sampled_values=sampled_vals)
self.assertAllClose(exp_nce_loss, self.evaluate(got_nce_loss), 1e-4)
def testSampledSoftmaxLoss(self):
# A simple test to verify the numerics.
def _SoftmaxCrossEntropyWithLogits(logits, targets):
# logits, targets: float arrays of the same shape.
assert logits.shape == targets.shape
stable_exp_logits = np.exp(logits -
np.amax(logits, axis=1, keepdims=True))
pred = stable_exp_logits / np.sum(stable_exp_logits, 1, keepdims=True)
return -np.sum(targets * np.log(pred + 1.0e-20), axis=1)
np.random.seed(0)
num_classes = 5
batch_size = 3
labels = [0, 1, 2]
(weights, biases, hidden_acts, sampled_vals, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=1,
labels=labels,
sampled=[1, 0, 2, 3],
subtract_log_q=True)
exp_sampled_softmax_loss = _SoftmaxCrossEntropyWithLogits(
exp_logits, exp_labels)
got_sampled_softmax_loss = nn_impl.sampled_softmax_loss_v2(
weights=constant_op.constant(weights),
biases=constant_op.constant(biases),
labels=constant_op.constant(labels, shape=(batch_size, 1)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=1,
sampled_values=sampled_vals,
remove_accidental_hits=False)
self.assertAllClose(exp_sampled_softmax_loss,
self.evaluate(got_sampled_softmax_loss), 1e-4)
# Test with sharded weights and sharded biases.
weight_shards, bias_shards = self._ShardTestEmbeddings(
weights, biases, num_shards=3)
got_sampled_softmax_loss = nn_impl.sampled_softmax_loss_v2(
weights=[constant_op.constant(shard) for shard in weight_shards],
biases=[constant_op.constant(shard) for shard in bias_shards],
labels=constant_op.constant(labels, shape=(batch_size, 1)),
inputs=constant_op.constant(hidden_acts),
num_sampled=4,
num_classes=num_classes,
num_true=1,
sampled_values=sampled_vals,
remove_accidental_hits=False)
self.assertAllClose(exp_sampled_softmax_loss,
self.evaluate(got_sampled_softmax_loss), 1e-4)
def testSampledSoftmaxLossBf16(self):
# A simple test to verify the numerics for bfloat16.
def _SoftmaxCrossEntropyWithLogits(logits, targets):
# logits, targets: float arrays of the same shape.
assert logits.shape == targets.shape
stable_exp_logits = np.exp(logits -
np.amax(logits, axis=1, keepdims=True))
pred = stable_exp_logits / np.sum(stable_exp_logits, 1, keepdims=True)
return -np.sum(targets * np.log(pred + 1.0e-20), axis=1)
np.random.seed(0)
num_classes = 5
batch_size = 3
labels = [0, 1, 2]
sampled = [1, 0, 2, 3]
(weights, biases, hidden_acts, _, exp_logits,
exp_labels) = self._GenerateTestData(
num_classes=num_classes,
dim=10,
batch_size=batch_size,
num_true=1,
labels=labels,
sampled=sampled,
subtract_log_q=True)
exp_sampled_softmax_loss = _SoftmaxCrossEntropyWithLogits(
exp_logits, exp_labels)
true_exp_bf16 = np.full([batch_size, 1],
fill_value=0.5,
dtype=dtypes.bfloat16.as_numpy_dtype)
sampled_exp_bf16 = np.full([len(sampled)],
fill_value=0.5,
dtype=dtypes.bfloat16.as_numpy_dtype)
sampled_vals_bf16 = (sampled, true_exp_bf16, sampled_exp_bf16)
got_sampled_softmax_loss = math_ops.cast(
nn_impl.sampled_softmax_loss_v2(
weights=constant_op.constant(weights, dtype=dtypes.bfloat16),
biases=constant_op.constant(biases, dtype=dtypes.bfloat16),
labels=constant_op.constant(
labels, shape=(batch_size, 1), dtype=dtypes.bfloat16),
inputs=constant_op.constant(hidden_acts, dtype=dtypes.bfloat16),
num_sampled=4,
num_classes=num_classes,
num_true=1,
sampled_values=sampled_vals_bf16,
remove_accidental_hits=False), dtypes.float32)
self.assertAllClose(exp_sampled_softmax_loss,
self.evaluate(got_sampled_softmax_loss), 1e-1)
class CReluTest(test_lib.TestCase):
def test(self):
np.random.seed(1) # Make it reproducible.
x = np.random.randn(3, 4).astype(np.float32)
y = np.concatenate([x * (x > 0), -x * (x < 0)], axis=1)
z = self.evaluate(nn_ops.crelu(constant_op.constant(x)))
self.assertAllClose(y, z, 1e-4)
class ReluTest(test_lib.TestCase):
def test(self):
np.random.seed(1) # Make it reproducible.
x = np.random.randn(3, 4).astype(np.float32)
y = np.maximum(x, 0.0)
z = self.evaluate(nn_ops.relu(constant_op.constant(x)))
self.assertAllEqual(y, z)
@test_util.disable_xla(
"This test relies on undefined behavior that XLA does not replicate")
@test_util.run_deprecated_v1
def testNaNs(self):
# Test that relu(nan) = nan for various sizes.
for i in range(18):
x = np.zeros(i) + np.nan
# TODO(b/178335491): This is broken on GPU today.
with self.cached_session(use_gpu=False):
z = nn_ops.relu(constant_op.constant(x)).eval()
self.assertTrue(np.isnan(z).all())
class LeakyReluTest(test_lib.TestCase):
def testRange(self):
batch_size = 3
height, width = 4, 4
np.random.seed(1) # Make it reproducible.
inputs = np.random.uniform(size=(batch_size, height, width,
3)).astype(np.float32)
inputs = constant_op.constant(inputs)
outputs = nn_ops.leaky_relu(inputs)
self.assertEqual(inputs.shape, outputs.shape)
inputs, outputs = self.evaluate([inputs, outputs])
self.assertGreaterEqual(outputs.min(), 0.0)
self.assertLessEqual(outputs.max(), 1.0)
self.assertAllClose(inputs, outputs)
@test_util.run_deprecated_v1
def testValues(self):
for dtype in [np.int32, np.int64, np.float16, np.float32, np.float64]:
np_values = np.array([-2, -1, 0, 1, 2], dtype=dtype)
outputs = nn_ops.leaky_relu(constant_op.constant(np_values))
outputs = self.evaluate(outputs)
tol = 2e-3 if dtype == np.float16 else 1e-6
self.assertAllClose(
outputs, [-0.4, -0.2, 0.0, 1.0, 2.0], rtol=tol, atol=tol)
@test_util.run_deprecated_v1
def testName(self):
np_values = np.array([-2, -1, 0, 1, 2], dtype=np.float64)
outputs_with_name_set = nn_ops.leaky_relu(
constant_op.constant(np_values), name="test_relu_op")
self.assertEqual(outputs_with_name_set.name, "test_relu_op:0")
outputs_without_name_set = nn_ops.leaky_relu(
constant_op.constant(np_values))
self.assertEqual(outputs_without_name_set.name, "LeakyRelu:0")
class GeluTest(test_lib.TestCase):
def test(self):
def gelu(x, approximate=False):
if approximate:
return 0.5 * x * (1.0 + np.tanh(
np.sqrt(2.0 / np.pi) * (x + 0.044715 * np.power(x, 3))))
else:
from scipy.stats import norm # pylint: disable=g-import-not-at-top
return x * norm.cdf(x)
np.random.seed(1) # Make it reproducible.
x = np.random.randn(3, 4).astype(np.float32)
y = gelu(x)
z = self.evaluate(nn_ops.gelu(x))
self.assertAllClose(y, z)
y = gelu(x, True)
z = self.evaluate(nn_ops.gelu(x, True))
self.assertAllClose(y, z)
@test_util.run_all_in_graph_and_eager_modes
class SwishTest(test_lib.TestCase):
def testValues(self):
np_values = np.array(
[np.linspace(-7.0, 0.0, 100),
np.linspace(0.0, 7.0, 100)],
dtype=np.float32)
tf_values = constant_op.constant(np_values)
actual_tf_outputs = nn_impl.swish(tf_values)
expected_tf_outputs = tf_values * math_ops.sigmoid(tf_values)
actual_outputs, expected_outputs = self.evaluate(
[actual_tf_outputs, expected_tf_outputs])
self.assertAllClose(actual_outputs, expected_outputs)
def testValuesWithBeta(self):
np_values = np.array(
[np.linspace(-7.0, 0.0, 100),
np.linspace(0.0, 7.0, 100)],
dtype=np.float32)
tf_values = constant_op.constant(np_values)
actual_tf_outputs = nn_impl.swish(tf_values, beta=0.5)
expected_tf_outputs = tf_values * math_ops.sigmoid(0.5 * tf_values)
actual_outputs, expected_outputs = self.evaluate(
[actual_tf_outputs, expected_tf_outputs])
self.assertAllClose(actual_outputs, expected_outputs)
def testGradients(self):
shape = [5, 3, 4]
sigma = 5
input_values = np.random.randn(*shape) * sigma
x_tf = constant_op.constant(input_values)
with self.cached_session():
def f(x): # pylint: disable=invalid-name
return nn_impl.swish(x)
theoretical, numerical = gradient_checker_v2.compute_gradient(
f, [x_tf])
self.assertAllClose(theoretical, numerical)
def testGradientsWithBeta(self):
shape = [5, 3, 4]
sigma = 5
input_values = np.random.randn(*shape) * sigma
x_tf = constant_op.constant(input_values)
with self.cached_session():
def f(x): # pylint: disable=invalid-name
return nn_impl.swish(x, beta=0.5)
theoretical, numerical = gradient_checker_v2.compute_gradient(
f, [x_tf])
self.assertAllClose(theoretical, numerical)
class MomentsTest(test_lib.TestCase):
def doOutputTest(self,
input_shape,
moments_axes,
tol=1e-4,
check_gradients=False):
for mu in [0.0, 1.0, 1e3]:
for sigma in [1.0, 0.1]:
for keep_dims in [True, False]:
input_values = np.random.rand(*input_shape) * sigma + mu
expected_mean = np.mean(
input_values, axis=moments_axes, keepdims=keep_dims)
expected_var = np.var(
input_values, axis=moments_axes, keepdims=keep_dims)
with ops.Graph().as_default() as g:
with self.session(graph=g) as sess:
inputs = constant_op.constant(
input_values, shape=input_shape, dtype=dtypes.float32)
mean, variance = nn_impl.moments_v2(
inputs, moments_axes, keepdims=keep_dims)
if check_gradients:
err = gradient_checker.compute_gradient_error(
inputs, input_shape, mean, mean.shape.as_list())
self.assertLess(err, 1e-3)
err = gradient_checker.compute_gradient_error(
inputs, input_shape, variance, variance.shape.as_list())
self.assertLess(err, 1e-3)
# Evaluate.
[mean, variance] = self.evaluate([mean, variance])
# Make sure that there are no NaNs
self.assertFalse(np.isnan(mean).any())
self.assertFalse(np.isnan(variance).any())
self.assertAllClose(mean, expected_mean, rtol=tol, atol=tol)
self.assertAllClose(variance, expected_var, rtol=tol, atol=tol)
def testOutputAndGradient2DInput0(self):
self.doOutputTest((10, 10), (0,), check_gradients=True)
def testOutputAndGradient2DInput01(self):
self.doOutputTest((10, 10), (0, 1), check_gradients=True)
def testOutput2DInput0(self):
self.doOutputTest((10, 300), (0,))
def testOutput2DInput1(self):
self.doOutputTest((10, 300), (1,))
def testOutput2DInput01(self):
self.doOutputTest((10, 300), (0, 1))
def testOutput4DInput0(self):
self.doOutputTest((10, 10, 10, 30), (0,))
def testOutput4DInput1(self):
self.doOutputTest((10, 10, 10, 30), (1,))
def testOutput4DInput3(self):
self.doOutputTest((10, 10, 10, 30), (3,))
def testOutput4DInput012(self):
self.doOutputTest((10, 10, 10, 30), (0, 1, 2))
def testOutput4DInput123(self):
self.doOutputTest((10, 10, 10, 30), (1, 2, 3))
class DataFormatDimMapTest(test_lib.TestCase):
def _test(self, x_val, y_val_expected):
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x)
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def test(self):
self._test(0, 0)
self._test(1, 2)
self._test(2, 3)
self._test(3, 1)
self._test(-1, 1)
self._test(-2, 3)
self._test(-3, 2)
self._test(-4, 0)
self._test([1, 3], [2, 1])
self._test([1, 3, -2], [2, 1, 3])
self._test([1, -3, -2], [2, 2, 3])
self._test([[1, -3], [1, -1]], [[2, 2], [2, 1]])
def testNHWCtoNCHW(self):
x_val = [1, -3, -2]
y_val_expected = [2, 2, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NHWC", dst_format="NCHW")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def testNHWCtoHWNC(self):
x_val = [-4, -3, -2, -1, 0, 1, 2, 3]
y_val_expected = [2, 0, 1, 3, 2, 0, 1, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NHWC", dst_format="HWNC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def testNHWCtoWHCN(self):
x_val = [-4, -3, -2, -1, 0, 1, 2, 3]
y_val_expected = [3, 1, 0, 2, 3, 1, 0, 2]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NHWC", dst_format="WHCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def testNDHWCtoNCDHW(self):
x_val = [1, -4, -3, -2]
y_val_expected = [2, 2, 3, 4]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NDHWC", dst_format="NCDHW")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def testNDHWCtoDHWNC(self):
x_val = [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4]
y_val_expected = [3, 0, 1, 2, 4, 3, 0, 1, 2, 4]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NDHWC", dst_format="DHWNC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
def testDNHWCtoWHDCN(self):
x_val = [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4]
y_val_expected = [4, 2, 1, 0, 3, 4, 2, 1, 0, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="NDHWC", dst_format="WHDCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testArbitraryASCII(self):
x_val = [-4, -3, -2, -1, 0, 1, 2, 3]
y_val_expected = [3, 2, 1, 0, 3, 2, 1, 0]
x = constant_op.constant(x_val)
y = nn_ops.data_format_dim_map(x, src_format="qwer", dst_format="rewq")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, y_val_expected)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testInvalidLength(self):
x = [-4, -3, -2, -1, 0, 1, 2, 3]
with self.assertRaisesRegex(errors.InvalidArgumentError,
"Source format must be of length 4 or 5"):
op = nn_ops.data_format_dim_map(
x, src_format="12345678", dst_format="87654321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testDuplicateSrc(self):
x = [-4, -3, -2, -1, 0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_dim_map(x, src_format="1233", dst_format="4321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testDuplicateDst(self):
x = [-4, -3, -2, -1, 0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_dim_map(x, src_format="1234", dst_format="3321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testExtraSpecifiers(self):
x = [-4, -3, -2, -1, 0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_dim_map(x, src_format="1234", dst_format="5321")
with test_util.use_gpu():
self.evaluate(op)
class DataFormatVectorPermuteTest(test_lib.TestCase):
def testNHWCToNCHW(self):
x_val = [7, 4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x)
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [7, 3, 4, 9])
def testNHWCToNCHW_Size2(self):
x_val = [4, 9]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x)
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [4, 9])
def testNDHWCtoNCDHW(self):
x_val = [7, 4, 9, 3, 5]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="NCDHW")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [7, 5, 4, 9, 3])
def testNDHWCtoNCDHW_Size3(self):
x_val = [4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="NCDHW")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [4, 9, 3])
@test_util.disable_xla("unsupported data format")
def testNHWCToWHCN(self):
x_val = [7, 4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NHWC", dst_format="WHCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [9, 4, 3, 7])
@test_util.disable_xla("unsupported data format")
def testNHWCToWHCN_Size2(self):
x_val = [4, 9]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NHWC", dst_format="WHCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [9, 4])
@test_util.disable_xla("unsupported data format")
def testNDHWCToWHDCN(self):
x_val = [7, 4, 9, 3, 5]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="WHDCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [3, 9, 4, 5, 7])
@test_util.disable_xla("unsupported data format")
def testNDHWCToWHDCN_Size3(self):
x_val = [4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="WHDCN")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [3, 9, 4])
def testNCHWToNHWC(self):
x_val = [7, 4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NCHW", dst_format="NHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [7, 9, 3, 4])
def testNCHWToNHWC_Size2(self):
x_val = [9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x)
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [9, 3])
def testNCDHWToNDHWC(self):
x_val = [7, 4, 9, 3, 5]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NCDHW", dst_format="NDHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [7, 9, 3, 5, 4])
def testNCDHWToNDHWC_Size3(self):
x_val = [9, 3, 5]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NCDHW", dst_format="NDHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [9, 3, 5])
def testNHWCToHWNC(self):
x_val = [7, 4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NHWC", dst_format="HWNC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [4, 9, 7, 3])
def testHWNCToNHWC(self):
x_val = [7, 4, 9, 3]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="HWNC", dst_format="NHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [9, 7, 4, 3])
def testNHWCToNCHW2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x)
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[7, 4], [5, 1], [9, 3], [4, 5]])
def testNHWCToHWNC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NHWC", dst_format="HWNC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[9, 3], [4, 5], [7, 4], [5, 1]])
def testHWNCToNHWC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="HWNC", dst_format="NHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[4, 5], [7, 4], [9, 3], [5, 1]])
def testNCHWToNHWC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(x, src_format="NCHW", dst_format="NHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[7, 4], [4, 5], [5, 1], [9, 3]])
def testNDHWCToNCDHW2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1], [8, 2]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="NCDHW")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[7, 4], [8, 2], [9, 3], [4, 5], [5, 1]])
@test_util.disable_xla("unsupported data format")
def testNDHWCToDHWNC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1], [8, 2]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NDHWC", dst_format="DHWNC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[9, 3], [4, 5], [5, 1], [7, 4], [8, 2]])
@test_util.disable_xla("unsupported data format")
def testDHWNCToNDHWC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1], [8, 2]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="DHWNC", dst_format="NDHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[5, 1], [7, 4], [9, 3], [4, 5], [8, 2]])
def testNCDHWToNDHWC2D(self):
x_val = [[7, 4], [9, 3], [4, 5], [5, 1], [8, 2]]
x = constant_op.constant(x_val)
y = nn_ops.data_format_vec_permute(
x, src_format="NCDHW", dst_format="NDHWC")
with test_util.use_gpu():
y_val = self.evaluate(y)
self.assertAllEqual(y_val, [[7, 4], [4, 5], [5, 1], [8, 2], [9, 3]])
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testInvalidLength(self):
x = [0, 1, 2, 3]
with self.assertRaisesRegex(errors.InvalidArgumentError,
"Source format must be of length 4 or 5"):
op = nn_ops.data_format_vec_permute(
x, src_format="12345678", dst_format="87654321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testDuplicateSrc(self):
x = [0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_vec_permute(
x, src_format="1233", dst_format="4321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testDuplicateDst(self):
x = [0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_vec_permute(
x, src_format="1234", dst_format="3321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def testExtraSpecifiers(self):
x = [0, 1, 2, 3]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Destination and source format must determine a permutation"):
op = nn_ops.data_format_vec_permute(
x, src_format="1234", dst_format="5321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.disable_xla("XLA catches the error and rethrows as different one")
def test2DNoWH(self):
x = [[0, 1], [2, 3]]
with self.assertRaisesRegex(
errors.InvalidArgumentError,
"Format specifier must contain H and W for 2D case"):
op = nn_ops.data_format_vec_permute(
x, src_format="1234", dst_format="4321")
with test_util.use_gpu():
self.evaluate(op)
@test_util.run_all_in_graph_and_eager_modes
class AvgPoolTest(test_lib.TestCase):
def test1DTensor(self):
x = array_ops.ones([3, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool1d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test1DNumpy(self):
# explicitly use float32 for ROCm, as MIOpen does not yet support float64
# np.ones defaults to using float64 when dtype is not explicitly specified
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.ones([3, 6, 5], dtype=dtype)
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool1d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test1DNumpyWithGolden(self):
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.array([[[3], [6], [5]], [[1], [0], [1]]], dtype=dtype)
ksize = 2
strides = 1
y = nn_ops.avg_pool1d(x, ksize, strides, "SAME")
expected_y = np.array([[[4.5], [5.5], [5.0]], [[0.5], [0.5], [1.0]]],
dtype=dtype)
self.assertAllEqual(self.evaluate(y), expected_y)
def test2DTensor(self):
x = array_ops.ones([3, 6, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test2DNumpy(self):
# explicitly use float32 for ROCm, as MIOpen does not yet support float64
# np.ones defaults to using float64 when dtype is not explicitly specified
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.ones([3, 6, 6, 5], dtype=dtype)
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3DTensor(self):
x = array_ops.ones([3, 7, 6, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool3d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3DNumpy(self):
x = np.ones([3, 7, 6, 6, 5], dtype=np.float32)
ksize = 2
strides = 2
y1 = nn_ops.avg_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.avg_pool3d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
@test_util.run_all_in_graph_and_eager_modes
class MaxPoolTest(test_lib.TestCase):
def test1DTensor(self):
x = array_ops.ones([3, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool1d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test1DNumpy(self):
# explicitly use float32 for ROCm, as MIOpen does not yet support float64
# np.ones defaults to using float64 when dtype is not explicitly specified
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.ones([3, 6, 5], dtype=dtype)
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool1d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test1DNumpyWithGolden(self):
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.array([[[3], [6], [5]], [[1], [0], [1]]], dtype=dtype)
ksize = 2
strides = 1
y = nn_ops.max_pool1d(x, ksize, strides, "SAME")
expected_y = np.array([[[6], [6], [5]], [[1], [1], [1]]], dtype=dtype)
self.assertAllEqual(self.evaluate(y), expected_y)
def test2DTensor(self):
x = array_ops.ones([3, 6, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test2DNumpy(self):
# explicitly use float32 for ROCm, as MIOpen does not yet support float64
# np.ones defaults to using float64 when dtype is not explicitly specified
dtype = np.float32 if test_lib.is_built_with_rocm() else np.float64
x = np.ones([3, 6, 6, 5], dtype=dtype)
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3DTensor(self):
x = array_ops.ones([3, 7, 6, 6, 5])
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool3d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3DNumpy(self):
x = np.ones([3, 7, 6, 6, 5], dtype=np.float32)
ksize = 2
strides = 2
y1 = nn_ops.max_pool_v2(x, ksize, strides, "SAME")
y2 = nn_ops.max_pool3d(x, ksize, strides, "SAME")
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def testIncorrectSizeInputSmall(self):
x = array_ops.ones([3, 4])
with self.assertRaisesRegex(
ValueError,
"`input.shape.rank` must be 3, 4 or 5.*of rank 2."):
nn_ops.max_pool_v2(x, 2, 2, "SAME")
def testIncorrectSizeInput(self):
x = array_ops.ones([3, 4, 1, 2, 1, 2])
with self.assertRaisesRegex(
ValueError,
"`input.shape.rank` must be 3, 4 or 5.*of rank 6."):
nn_ops.max_pool_v2(x, 2, 2, "SAME")
@test_util.run_all_in_graph_and_eager_modes
class ConvolutionTest(test_lib.TestCase):
def testUnknownSize(self):
x = tensor_spec.TensorSpec(None, dtypes.float32, name="x")
k = np.ones([3, 6, 6, 5], dtype=np.float32)
@def_function.function
def F(value):
return nn_ops.convolution(value, k, "SAME")
F.get_concrete_function(x)
class ConvTransposeTest(test_lib.TestCase):
def test1D(self):
t = array_ops.ones([2, 4, 3])
v = array_ops.ones([2, 5, 3])
strides = 2
y1 = nn_ops.conv1d_transpose(t, v, [2, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, [2, 8, 5], strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test1DTensor(self):
t = array_ops.ones([2, 4, 3])
v = array_ops.ones([2, 5, 3])
strides = 2
y1 = nn_ops.conv1d_transpose(t, v, [2, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, constant_op.constant([2, 8, 5]), strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test2D(self):
t = array_ops.ones([2, 4, 4, 3])
v = array_ops.ones([2, 2, 5, 3])
strides = 2
y1 = nn_ops.conv2d_transpose_v2(t, v, [2, 8, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, [2, 8, 8, 5], strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test2DTensor(self):
t = array_ops.ones([2, 4, 4, 3])
v = array_ops.ones([2, 2, 5, 3])
strides = 2
y1 = nn_ops.conv2d_transpose_v2(t, v, [2, 8, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, constant_op.constant([2, 8, 8, 5]),
strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3D(self):
t = array_ops.ones([2, 4, 4, 4, 3])
v = array_ops.ones([2, 2, 2, 5, 3])
strides = 2
y1 = nn_ops.conv3d_transpose_v2(t, v, [2, 8, 8, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, [2, 8, 8, 8, 5], strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def test3DTensor(self):
t = array_ops.ones([2, 4, 4, 4, 3])
v = array_ops.ones([2, 2, 2, 5, 3])
strides = 2
y1 = nn_ops.conv3d_transpose_v2(t, v, [2, 8, 8, 8, 5], strides)
y2 = nn_ops.conv_transpose(t, v, constant_op.constant([2, 8, 8, 8, 5]),
strides)
self.assertAllEqual(self.evaluate(y1), self.evaluate(y2))
def testIncorrectSizeInputSmall(self):
with self.assertRaisesRegex(
ValueError,
"`output_shape` must be of length 3, 4 or 5.*of length 2."):
nn_ops.conv_transpose(None, 2, [2, 3], "SAME")
def testIncorrectSizeInput(self):
with self.assertRaisesRegex(
ValueError,
"`output_shape` must be of length 3, 4 or 5.* of length 6."):
nn_ops.conv_transpose(None, 2, [2, 3, 4, 2, 5, 1], "SAME")
def testTensorsNoShape(self):
with self.assertRaisesRegex(
ValueError, "`output_shape` must be a tensor or sized collection"):
nn_ops.conv_transpose(None, None, None, None)
class RaggedEmbeddingTest(test_lib.TestCase):
def testRaggedTensor(self):
weights = constant_op.constant([[0, 0, 0], [1, 1, 1], [2, 2, 2], [3, 3, 3]])
ragged_ids = ragged_factory_ops.constant([[1, 2, 3], [0], [1, 2]],
ragged_rank=1)
embedded_ragged = nn.embedding_lookup(weights, ragged_ids)
expected_output = ragged_factory_ops.constant(
[[[1, 1, 1], [2, 2, 2], [3, 3, 3]], [[0, 0, 0]], [[1, 1, 1], [2, 2, 2]]
],
ragged_rank=1)
self.assertAllEqual(expected_output, embedded_ragged)
def testMultipleRaggedDimTensor(self):
weights = constant_op.constant([[0, 0], [1, 1], [2, 2], [3, 3], [4, 4],
[5, 5], [6, 6]])
ragged_ids = ragged_factory_ops.constant(
[[[[3, 4], [0, 6]], []], [[[2, 1], [1, 0]], [[2, 5], [2, 3]]], [[[1, 0]]
]],
ragged_rank=2)
embedded_ragged = nn.embedding_lookup(weights, ragged_ids)
expected_output = ragged_factory_ops.constant(
[[[[[3, 3], [4, 4]], [[0, 0], [6, 6]]], []],
[[[[2, 2], [1, 1]], [[1, 1], [0, 0]]],
[[[2, 2], [5, 5]], [[2, 2], [3, 3]]]], [[[[1, 1], [0, 0]]]]],
ragged_rank=2)
self.assertAllEqual(expected_output, embedded_ragged)
def testMissingWeights(self):
ragged_ids = ragged_factory_ops.constant([[1, 2, 3], [0], [1, 2]])
with self.assertRaisesRegex(ValueError, "params must be specified.*"):
nn.embedding_lookup(None, ragged_ids)
def testEmptyWeights(self):
ragged_ids = ragged_factory_ops.constant([[1, 2, 3], [0], [1, 2]])
with self.assertRaisesRegex(ValueError, "params should not be empty.*"):
nn.embedding_lookup([], ragged_ids)
def testInvalidIndicesType(self):
weights = constant_op.constant([[0, 0, 0], [1, 1, 1], [2, 2, 2]])
ragged_ids = ragged_factory_ops.constant([[1., 2., 3.], [1., 2.]])
with self.assertRaisesRegex(
ValueError, "The values contained by the inputs have type*"):
nn.embedding_lookup(weights, ragged_ids)
def testMaxNormForEmbeddings(self):
weights = constant_op.constant(
[[0, 0, 0, 0], [1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3]],
dtype=dtypes.float32)
ragged_ids = ragged_factory_ops.constant([[1, 2, 3], [0], [1, 2]],
ragged_rank=1)
actual_embeddings = [
nn.embedding_lookup(weights, ragged_ids, max_norm=max_norm)
for max_norm in [1, 2, 5]
]
expected_embeddings = (
# max_norm = 1
[[[.5, .5, .5, .5], [.5, .5, .5, .5], [.5, .5, .5, .5]], [[0, 0, 0, 0]],
[[.5, .5, .5, .5], [.5, .5, .5, .5]]],
# max_norm = 2
[[[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]], [[0, 0, 0, 0]],
[[1, 1, 1, 1], [1, 1, 1, 1]]],
# max_norm = 5
[[[1, 1, 1, 1], [2, 2, 2, 2], [2.5, 2.5, 2.5, 2.5]], [[0, 0, 0, 0]],
[[1, 1, 1, 1], [2, 2, 2, 2]]],
)
for expected, actual in zip(expected_embeddings, actual_embeddings):
self.assertAllClose(
ragged_factory_ops.constant(expected, dtype=float, ragged_rank=1),
actual)
class IsotonicTest(parameterized.TestCase, test_lib.TestCase):
@test_util.run_in_graph_and_eager_modes
def test_increasing_and_decreasing(self):
x = constant_op.constant([[0, 1, 2, 3, 4], [5, 6, 7, 8, 9]],
dtype=dtypes.float64)
y, segments = nn_ops.isotonic_regression(x, decreasing=False)
self.assertAllClose(y, x)
self.assertAllClose(segments, [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4]])
y, segments = nn_ops.isotonic_regression(x, decreasing=True)
self.assertAllClose(
y,
[
[2, 2, 2, 2, 2], # Average of the inputs.
[7, 7, 7, 7, 7]
])
self.assertAllClose(segments, array_ops.zeros((2, 5)))
# pylint: disable=invalid-unary-operand-type
y, segments = nn_ops.isotonic_regression(-x, decreasing=True)
self.assertAllClose(segments, [[0, 1, 2, 3, 4], [0, 1, 2, 3, 4]])
self.assertAllClose(y, -x)
y, segments = nn_ops.isotonic_regression(-x, decreasing=False)
self.assertAllClose(
-y,
[
[2, 2, 2, 2, 2], # Average of the inputs.
[7, 7, 7, 7, 7]
])
self.assertAllClose(segments, array_ops.zeros((2, 5)))
@test_util.run_in_graph_and_eager_modes
def test_different_axis(self):
x = constant_op.constant([[0, 6, 2, 8, 4], [5, 1, 7, 3, 9]],
dtype=dtypes.float64)
y, segments = nn_ops.isotonic_regression(x, decreasing=True, axis=0)
self.assertAllClose(
y,
[
[2.5, 6, 4.5, 8, 6.5], # Either identity or average.
[2.5, 1, 4.5, 3, 6.5]
])
self.assertAllClose(segments, [[0, 0, 0, 0, 0], [0, 1, 0, 1, 0]])
@test_util.run_v2_only
def testGradientV2(self, dtype=np.float64, batch_size=30, dimensions=50):
@def_function.function
def ComputeIsotonicFn(x):
y, _ = nn_ops.isotonic_regression(x) # No gradient wrt segments.
return y
np.random.seed(0)
x_init = np.random.randn(batch_size, dimensions).astype(dtype)
grad_theoretical, grad_numerical = gradient_checker_v2.compute_gradient(
ComputeIsotonicFn, [x_init], delta=1e-5)
self.assertAllClose(grad_theoretical, grad_numerical)
@test_util.run_v1_only("compute_gradient_error is v1 only")
def testGradientV1(self, dtype=np.float64, batch_size=30, dimensions=50):
np.random.seed(0)
x_init = np.random.randn(batch_size, dimensions).astype(dtype)
with self.cached_session():
x = array_ops.placeholder(dtype, (batch_size, dimensions))
y, _ = nn_ops.isotonic_regression(x) # Segments have no gradient.
max_error = gradient_checker.compute_gradient_error(
x, (batch_size, dimensions), y, (batch_size, dimensions), x_init)
self.assertAllClose(max_error, 0.)
@parameterized.parameters([[dtypes.half, dtypes.half],
[dtypes.bfloat16, dtypes.bfloat16],
[dtypes.float32, dtypes.float32],
[dtypes.float64, dtypes.float64],
[dtypes.int32, dtypes.float64],
[dtypes.int16, dtypes.float32]])
def testTypePromotion(self, dtype_in, expected_dtype_out):
x = constant_op.constant([[0, 6, 2, 8, 4], [5, 1, 7, 3, 9]], dtype=dtype_in)
y, segments = nn_ops.isotonic_regression(x)
self.assertEqual(y.dtype, expected_dtype_out)
self.assertEqual(segments.dtype, dtypes.int32)
if __name__ == "__main__":
test_lib.main()