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Paddle/python/paddle/fluid/tests/unittests/test_prelu_op.py

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# Copyright (c) 2018 PaddlePaddle 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.
from __future__ import print_function
import unittest
import numpy as np
import six
from op_test import OpTest
class PReluTest(OpTest):
def setUp(self):
self.op_type = "prelu"
self.initTestCase()
x_np = np.random.normal(size=(3, 5, 5, 10)).astype("float32")
# Since zero point in prelu is not differentiable, avoid randomize
# zero.
x_np[np.abs(x_np) < 0.005] = 0.02
if self.attrs == {'mode': "all"}:
alpha_np = np.random.rand(1).astype("float32")
self.inputs = {'X': x_np, 'Alpha': alpha_np}
elif self.attrs == {'mode': "channel"}:
alpha_np = np.random.rand(1, x_np.shape[1], 1, 1).astype("float32")
self.inputs = {'X': x_np, 'Alpha': alpha_np}
else:
alpha_np = np.random.rand(*x_np.shape).astype("float32")
self.inputs = {'X': x_np, 'Alpha': alpha_np}
out_np = np.maximum(self.inputs['X'], 0.)
out_np = out_np + np.minimum(self.inputs['X'],
0.) * self.inputs['Alpha']
assert out_np is not self.inputs['X']
self.outputs = {'Out': out_np}
def initTestCase(self):
self.attrs = {'mode': "channel"}
def test_check_output(self):
self.check_output()
def test_check_grad_1_ignore_x(self):
self.check_grad(['Alpha'], 'Out', no_grad_set=set('X'))
def test_check_grad_2(self):
self.check_grad(['X', 'Alpha'], 'Out')
def test_check_grad_3_ignore_alpha(self):
self.check_grad(['X'], 'Out', no_grad_set=set('Alpha'))
# TODO(minqiyang): Resume these test cases after fixing Python3 CI job issues
if six.PY2:
class TestCase1(PReluTest):
def initTestCase(self):
self.attrs = {'mode': "all"}
class TestCase2(PReluTest):
def initTestCase(self):
self.attrs = {'mode': "channel"}
class TestCase3(PReluTest):
def initTestCase(self):
self.attrs = {'mode': "element"}
if __name__ == "__main__":
unittest.main()