cavis/libnd4j/include/ops/declarable/generic/activations/elu.cpp

70 lines
2.3 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
//
// @author raver119@gmail.com
//
#include <op_boilerplate.h>
#if NOT_EXCLUDED(OP_elu)
#include <ops/declarable/CustomOperations.h>
#include <ops/declarable/helpers/legacy_helpers.h>
namespace nd4j {
namespace ops {
CONFIGURABLE_OP_IMPL(elu, 1, 1, true, -2, 0) {
auto input = INPUT_VARIABLE(0);
auto output = OUTPUT_VARIABLE(0);
const auto alpha = block.numT() > 0 ? T_ARG(0) : 1.f;
input->applyScalar(nd4j::scalar::ELU, alpha, *output);
return Status::OK();
}
DECLARE_TYPES(elu) {
getOpDescriptor()
->setAllowedInputTypes(0, DataType::ANY)
->setAllowedOutputTypes(0, {ALL_FLOATS});
}
CONFIGURABLE_OP_IMPL(elu_bp, 2, 1, true, -2, 0) {
auto input = INPUT_VARIABLE(0);
auto epsilon = INPUT_VARIABLE(1);
auto output = OUTPUT_VARIABLE(0);
const auto alpha = block.numT() > 0 ? T_ARG(0) : 1.f;
// input->applyPairwiseTransform(pairwise::ELUDerivativeE, epsilon, output);
helpers::eluDerivative(block.launchContext(), input, epsilon, output, alpha);
return Status::OK();
}
DECLARE_TYPES(elu_bp) {
getOpDescriptor()
->setAllowedInputTypes(0, DataType::ANY)
->setAllowedInputTypes(1, {DataType::FLOAT32, DataType ::DOUBLE, DataType::HALF})
->setAllowedOutputTypes(0, {DataType::FLOAT32, DataType ::DOUBLE, DataType::HALF});
}
}
}
#endif