LCOV - code coverage report
Current view: top level - nntrainer/layers - positional_encoding_layer.h (source / functions) Coverage Total Hit
Test: coverage_filtered.info Lines: 100.0 % 3 3
Test Date: 2025-12-14 20:38:17 Functions: 100.0 % 2 2

            Line data    Source code
       1              : // SPDX-License-Identifier: Apache-2.0
       2              : /**
       3              :  * Copyright (C) 2022 Hyeonseok Lee <hs89.lee@samsung.com>
       4              :  *
       5              :  * @file   positional_encoding_layer.h
       6              :  * @date   16 August 2022
       7              :  * @brief  This file contains the positional encoding layer in transformer
       8              :  * @see    https://github.com/nnstreamer/nntrainer
       9              :  *         https://arxiv.org/abs/1607.06450
      10              :  * @author Hyeonseok Lee <hs89.lee@samsung.com>
      11              :  * @bug    No known bugs except for NYI items
      12              :  *
      13              :  */
      14              : 
      15              : #ifndef __POSITIONAL_ENCODING_LAYER_H__
      16              : #define __POSITIONAL_ENCODING_LAYER_H__
      17              : #ifdef __cplusplus
      18              : 
      19              : #include <base_properties.h>
      20              : #include <layer_context.h>
      21              : #include <layer_devel.h>
      22              : #include <node_exporter.h>
      23              : 
      24              : namespace nntrainer {
      25              : 
      26              : /**
      27              :  * @class   Positional encoding Layer
      28              :  * @brief   Implementation of positional encoding layer which is described in
      29              :  * paper "Attention is all you need"
      30              :  */
      31              : class PositionalEncodingLayer : public Layer {
      32              : public:
      33              :   /**
      34              :    * @brief     Constructor of PositionalEncodingLayer
      35              :    */
      36              :   PositionalEncodingLayer();
      37              : 
      38              :   /**
      39              :    * @brief     Destructor of PositionalEncodingLayer
      40              :    */
      41              :   ~PositionalEncodingLayer();
      42              : 
      43              :   /**
      44              :    *  @brief  Move constructor of PositionalEncodingLayer.
      45              :    *  @param[in] PositionalEncodingLayer &&
      46              :    */
      47              :   PositionalEncodingLayer(PositionalEncodingLayer &&rhs) noexcept = default;
      48              : 
      49              :   /**
      50              :    * @brief  Move assignment operator.
      51              :    * @parma[in] rhs PositionalEncodingLayer to be moved.
      52              :    */
      53              :   PositionalEncodingLayer &operator=(PositionalEncodingLayer &&rhs) = default;
      54              : 
      55              :   /**
      56              :    * @copydoc Layer::finalize(InitLayerContext &context)
      57              :    */
      58              :   void finalize(InitLayerContext &context) override;
      59              : 
      60              :   /**
      61              :    * @copydoc Layer::forwarding(RunLayerContext &context, bool training)
      62              :    */
      63              :   void forwarding(RunLayerContext &context, bool training) override;
      64              : 
      65              :   /**
      66              :    * @copydoc Layer::calcDerivative(RunLayerContext &context)
      67              :    */
      68              :   void calcDerivative(RunLayerContext &context) override;
      69              : 
      70              :   /**
      71              :    * @copydoc bool supportBackwarding() const
      72              :    */
      73            2 :   bool supportBackwarding() const override { return true; };
      74              : 
      75              :   /**
      76              :    * @copydoc Layer::exportTo(Exporter &exporter, ml::train::ExportMethods
      77              :    * method)
      78              :    */
      79              :   void exportTo(Exporter &exporter,
      80              :                 const ml::train::ExportMethods &method) const override;
      81              : 
      82              :   /**
      83              :    * @copydoc Layer::setProperty(const std::vector<std::string> &values)
      84              :    */
      85              :   void setProperty(const std::vector<std::string> &values) override;
      86              : 
      87              :   /**
      88              :    * @copydoc Layer::getType()
      89              :    */
      90          117 :   const std::string getType() const override {
      91          117 :     return PositionalEncodingLayer::type;
      92              :   };
      93              : 
      94              :   static constexpr const char *type = "positional_encoding";
      95              : 
      96              : private:
      97              :   bool isPEcalculated; // bool value to check positional encoding is already
      98              :                        // calculated
      99              :   std::tuple<props::MaxTimestep> positional_encoding_props;
     100              :   std::array<unsigned int, 1> weight_idx;
     101              : 
     102              :   /**
     103              :    * @brief calculate positional encoding
     104              :    * @param context Context of the layer
     105              :    */
     106              :   void calculatePositionalEncoding(RunLayerContext &context);
     107              : };
     108              : 
     109              : } // namespace nntrainer
     110              : 
     111              : #endif /* __cplusplus */
     112              : #endif /* __MULTI_HEAD_ATTENTION_LAYER_H__ */
        

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