NeuroBook/Include/realization/positionencoder.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+

//|                                              positionencoder.mqh |

//|                                  Copyright 2021, MetaQuotes Ltd. |

//|                                             https://www.mql5.com |

//+------------------------------------------------------------------+

#property copyright "Copyright 2021, MetaQuotes Ltd."

#property link      "https://www.mql5.com"

//+------------------------------------------------------------------+

//| Connect libraries                                                |

//+------------------------------------------------------------------+

#include "buffer.mqh"

//+------------------------------------------------------------------+

//| Class CPositionEncoder                                           |

//| Purpose: Positional encoding class                               |

//+------------------------------------------------------------------+

class CPositionEncoder  : public CBufferType

  {

protected:

   ulong             m_iCount;

   ulong             m_iDimension;

public:

                     CPositionEncoder(void) {};

                    ~CPositionEncoder(void) {};

   //---

   virtual bool      InitEncoder(ulong count, ulong dimension);  // Initialization method

   virtual bool      AddEncoder(CBufferType *&buffer);        // Method for adding positional copying to input data

   //--- File handling method

   virtual bool      Save(const int file_handle);

   virtual bool      Load(const int file_handle);

  };

//+------------------------------------------------------------------+

//| Initialization method                                            |

//+------------------------------------------------------------------+

bool CPositionEncoder::InitEncoder(ulong count, ulong dimension)

  {

//--- Save constants

   m_iCount     = count;

   m_iDimension = dimension;

//--- Prepare buffer

   if(!m_mMatrix.Resize(count, dimension))

      return false;

//--- Fill buffer with positional encoding labels

   for(int r = 0; r < (int)count; r++)

     {

      for(int c = 0; c < (int)dimension; c++)

        {

         TYPE value = (TYPE)(r / pow(1000, 2 * c / dimension));

         switch(c % 2)

           {

            case 0:

               m_mMatrix[r, c] = (TYPE)MathSin(value);

               break;

            case 1:

               m_mMatrix[r, c] = (TYPE)MathCos(value);

               break;

           }