45 lines
1.4 KiB
45 lines
1.4 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. 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 <memory>
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#include "CRFLayer.h"
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#include "LinearChainCRF.h"
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namespace paddle {
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/**
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* A layer for calculating the decoding sequence of sequential conditional
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* random field model.
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* The decoding sequence is stored in output_.ids
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* It also calculate error, output_.value[i] is 1 for incorrect decoding
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* or 0 for correct decoding)
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* See LinearChainCRF.h for the detail of the CRF formulation.
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*/
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class CRFDecodingLayer : public CRFLayer {
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public:
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explicit CRFDecodingLayer(const LayerConfig& config) : CRFLayer(config) {}
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bool init(const LayerMap& layerMap,
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const ParameterMap& parameterMap) override;
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void forward(PassType passType) override;
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void backward(const UpdateCallback& callback) override;
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protected:
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std::unique_ptr<LinearChainCRF> crf_;
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};
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} // namespace paddle
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