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63 lines
1.9 KiB
63 lines
1.9 KiB
9 years ago
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/* Copyright (c) 2016 Baidu, Inc. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#pragma once
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#include "Layer.h"
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#include "Projection.h"
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#include "Operator.h"
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namespace paddle {
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/**
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* A mixed layer has multiple input layers.
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* Each input layer was processed by a Projection or Operator.
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* The results of all projections or Operators are summed together with bias
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* (if configured), and then go through an activation function and dropout
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* (if configured).
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*
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* The config file api is mixed_layer.
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*/
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class MixedLayer : public Layer {
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public:
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explicit MixedLayer(const LayerConfig& config) : Layer(config) {}
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~MixedLayer() {}
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virtual bool init(const LayerMap& layerMap, const ParameterMap& parameterMap);
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virtual void prefetch();
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virtual void forward(PassType passType);
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virtual void backward(const UpdateCallback& callback = nullptr);
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virtual void resetState();
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/**
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* setState() should be called after getState().
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* Argument state consists of all projections states.
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*/
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virtual void setState(LayerStatePtr state);
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/**
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* Return state which consists of all projections states.
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*/
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virtual LayerStatePtr getState();
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protected:
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std::vector<std::unique_ptr<Projection>> projections_;
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std::vector<std::unique_ptr<Operator>> operators_;
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/// the matrix size of projection state
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std::vector<int> projectionStateMatrixSize_;
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std::unique_ptr<Weight> biases_;
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};
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} // namespace paddle
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