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.
63 lines
2.2 KiB
63 lines
2.2 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
|
|
|
|
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. */
|
|
|
|
#pragma once
|
|
|
|
#include "paddle/framework/op_registry.h"
|
|
#include "paddle/operators/math/math_function.h"
|
|
#include "paddle/operators/math/maxouting.h"
|
|
|
|
namespace paddle {
|
|
namespace operators {
|
|
|
|
using Tensor = framework::Tensor;
|
|
|
|
template <typename Place, typename T>
|
|
class MaxOutKernel : public framework::OpKernel<T> {
|
|
public:
|
|
void Compute(const framework::ExecutionContext& context) const override {
|
|
const Tensor* in_x = context.Input<Tensor>("X");
|
|
Tensor* out = context.Output<Tensor>("Out");
|
|
int groups = context.template Attr<int>("groups");
|
|
|
|
math::MaxOutFunctor<Place, T> maxout_forward;
|
|
maxout_forward(context.device_context(), *in_x, out, groups);
|
|
}
|
|
};
|
|
|
|
template <typename Place, typename T>
|
|
class MaxOutGradKernel : public framework::OpKernel<T> {
|
|
public:
|
|
void Compute(const framework::ExecutionContext& context) const override {
|
|
const Tensor* in_x = context.Input<Tensor>("X");
|
|
const Tensor* out = context.Input<Tensor>("Out");
|
|
const Tensor* out_grad =
|
|
context.Input<Tensor>(framework::GradVarName("Out"));
|
|
Tensor* in_x_grad = context.Output<Tensor>(framework::GradVarName("X"));
|
|
int groups = context.template Attr<int>("groups");
|
|
auto& device_ctx = context.device_context();
|
|
math::SetConstant<Place, T> zero;
|
|
if (in_x_grad) {
|
|
in_x_grad->mutable_data<T>(context.GetPlace());
|
|
zero(device_ctx, in_x_grad, static_cast<T>(0.0));
|
|
math::MaxOutGradFunctor<Place, T> maxout_backward;
|
|
maxout_backward(context.device_context(), *in_x, in_x_grad, *out,
|
|
*out_grad, groups);
|
|
}
|
|
}
|
|
};
|
|
|
|
} // namespace operators
|
|
} // namespace paddle
|