You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.4 KiB
70 lines
2.4 KiB
/* Copyright (c) 2016 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. */
|
|
|
|
#include "ParameterReluLayer.h"
|
|
#include "paddle/utils/Logging.h"
|
|
#include "paddle/utils/Stat.h"
|
|
|
|
namespace paddle {
|
|
|
|
REGISTER_LAYER(prelu, ParameterReluLayer);
|
|
|
|
bool ParameterReluLayer::init(const LayerMap& layerMap,
|
|
const ParameterMap& parameterMap) {
|
|
/* Initialize the basic parent class */
|
|
Layer::init(layerMap, parameterMap);
|
|
CHECK_EQ(inputLayers_.size(), 1UL);
|
|
CHECK_EQ(inputLayers_.size(), parameters_.size());
|
|
partialSum_ = config_.partial_sum();
|
|
CHECK_GT(partialSum_, 0UL) << "partial_sum must be larger than zero.";
|
|
CHECK(!(inputLayers_[0]->getSize() % partialSum_))
|
|
<< "Incorrect value for partialSum: " << partialSum_
|
|
<< " must divide input size: " << inputLayers_[0]->getSize();
|
|
CHECK_EQ(getSize() / partialSum_, parameters_[0]->getSize());
|
|
weight_ = std::unique_ptr<Weight>(new Weight(
|
|
1UL, inputLayers_[0]->getSize() / partialSum_, parameters_[0]));
|
|
return true;
|
|
}
|
|
|
|
void ParameterReluLayer::forward(PassType passType) {
|
|
Layer::forward(passType);
|
|
|
|
/* malloc memory for the output_ if necessary */
|
|
int batchSize = getInput(0).getBatchSize();
|
|
int size = getSize();
|
|
reserveOutput(batchSize, size);
|
|
MatrixPtr outV = getOutputValue();
|
|
{
|
|
REGISTER_TIMER_INFO("FwResetTimer", getName().c_str());
|
|
outV->paramReluForward(*(getInput(0).value), *(weight_->getW()));
|
|
}
|
|
}
|
|
|
|
void ParameterReluLayer::backward(const UpdateCallback& callback) {
|
|
if (weight_->getWGrad()) {
|
|
weight_->getWGrad()->paramReluBackwardW(*getOutputGrad(),
|
|
*(getInputValue(0)));
|
|
}
|
|
|
|
MatrixPtr preGrad = getInputGrad(0);
|
|
preGrad->paramReluBackwardDiff(
|
|
*getOutputGrad(), *(getInputValue(0)), *(weight_->getW()));
|
|
{
|
|
REGISTER_TIMER_INFO("WeightUpdate", getName().c_str());
|
|
weight_->getParameterPtr()->incUpdate(callback);
|
|
}
|
|
}
|
|
|
|
} // namespace paddle
|