Original_NNB/MQL5/Include/NeuroNetworksBook/realization/neuronproof.mqh

<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//|                                                  NeuronProof.mqh |
//|                                  Copyright 2021, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2021, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
//+------------------------------------------------------------------+
//| >4:;NG05< 181;8>B5:8                                            |
//+------------------------------------------------------------------+
#include "neuronbase.mqh"
#include <Math\Stat\Math.mqh>
//+------------------------------------------------------------------+
//| Class CNeuronProof                                               |
//| 07=0G5=85: ;0AA >@30=870F88 @01>BK ?>42K1>@>G=>3> A;>O         |
//+------------------------------------------------------------------+
class CNeuronProof    :  public CNeuronBase
  {
protected:
   uint              m_iWindow;             // 07<5@ >:=0 =0 2E>45 =59@>==>3> A;>O
   uint              m_iStep;               // 07<5@ H030 2E>4=>3> >:=0
   uint              m_iNeurons;            // 07<5@ 2KE>40 >4=>3> D8;LB@0
   uint              m_iWindowOut;          //>;8G5AB2> D8;LB@>2/
   ENUM_ACTIVATION   m_eActivation;         //$C=:F8O 0:B820F88
public:
                     CNeuronProof(void);
                    ~CNeuronProof(void) {};
   //---
   virtual bool      Init(CLayerDescription *description);
   virtual bool      FeedForward(CNeuronBase *prevLayer);
   virtual bool      CalcOutputGradient(CBufferDouble *target) { return false;}
   virtual bool      CalcHiddenGradient(CNeuronBase *prevLayer);
   virtual bool      CalcDeltaWeights(CNeuronBase *prevLayer)  { return true; }
   virtual bool      UpdateWeights(int batch_size, double learningRate,
                                   double &Beta[], double &Lambda[])
     { return true; }
   //---
   virtual CBufferDouble     *GetWeights(void)       const {  return(NULL);           }
   virtual CBufferDouble     *GetDeltaWeights(void)  const {  return(NULL);           }
   virtual uint      GetNeurons(void)  const {  return m_iNeurons;  }
   //--- 5B>4K @01>BK A D09;0<8
   virtual bool      Save(const int file_handle);
   virtual bool      Load(const int file_handle);
   //--- 5B>4 845=B8D8:0F88 >1J5:B0
   virtual int       Type(void)               const { return(defNeuronProof); }
  };
//+------------------------------------------------------------------+
//| >=AB@C:B>@ :;0AA0                                               |
//+------------------------------------------------------------------+
CNeuronProof::CNeuronProof(void) :  m_eActivation(ACT_MAX_POOLING),
                                    m_iWindow(2),
                                    m_iStep(1),
                                    m_iWindowOut(1),
                                    m_iNeurons(0)
  {
  }
//+------------------------------------------------------------------+
//| 5B>4 8=8F80;870F88 :;0AA0                                       |
//+------------------------------------------------------------------+
bool CNeuronProof::Init(CLayerDescription *description)
  {
//--- ;>: :>=B@>;59
  if(CheckPointer(description) == POINTER_INVALID || description.type != Type() ||
      description.count <= 0)
      return false;
//--- !>E@0=O5< :>=AB0=BK
   m_iWindow = description.window;
   m_iStep = description.step;
   m_iWindowOut = description.window_out;
   m_iNeurons = description.count;
   if(m_iWindow <= 0 || m_iStep <= 0 || m_iWindowOut <= 0 || m_iNeurons <= 0)
      return false;
//--- @>25@:0 DC=:F88 ?>B5@L
   switch(description.activation)
     {
      case ACT_AVERAGE_POOLING:
      case ACT_MAX_POOLING:
         m_eActivation = description.activation;
         break;
      default:
         return false;
         break;
     }
//--- =8F80;878@C5< 1CD5@ @57C;LB0B>2
   if(CheckPointer(m_cOutputs) == POINTER_INVALID)
     {
      m_cOutputs = new CBufferDouble();
      if(CheckPointer(m_cOutputs) == POINTER_INVALID)
         return false;
     }
   if(!m_cOutputs.BufferInit(m_iNeurons * m_iWindowOut, 0))
      return false;
//--- =8F80;878@C5< 1CD5@ 3@0485=B>2 >H81:8
   if(CheckPointer(m_cGradients) == POINTER_INVALID)
     {
      m_cGradients = new CBufferDouble();
      if(CheckPointer(m_cGradients) == POINTER_INVALID)
         return false;
     }
   if(!m_cGradients.BufferInit(m_iNeurons * m_iWindowOut, 0))
      return false;
//---
   m_eOptimization = None;
//--- #40;O5< =5 8A?>;L7C5<K5 >1J5:BK
   if(CheckPointer(m_cActivation) != POINTER_INVALID)
      delete m_cActivation;
   if(CheckPointer(m_cWeights) != POINTER_INVALID)
      delete m_cWeights;
   if(CheckPointer(m_cDeltaWeights) != POINTER_INVALID)
      delete m_cDeltaWeights;
   for(int i = 0; i < 2; i++)
      if(CheckPointer(m_cMomenum[i]) != POINTER_INVALID)
         delete m_cMomenum[i];
//---
   return true;
  }
//+------------------------------------------------------------------+
//| 5B>4 ?@O<>3> ?@>E>40                                            |
//+------------------------------------------------------------------+
bool CNeuronProof::FeedForward(CNeuronBase *prevLayer)
  {
//--- ;>: :>=B@>;59
   if(CheckPointer(prevLayer) == POINTER_INVALID ||
      CheckPointer(m_cOutputs) == POINTER_INVALID ||
      CheckPointer(prevLayer.GetOutputs()) == POINTER_INVALID)
      return false;
   CBufferDouble *input_data = prevLayer.GetOutputs();
//---   0725B2;5=85 0;3>@8B<0 2 7028A8<>AB8 >B CAB@>9AB0 2K?>;=5=88O >?5@0F89
   if(CheckPointer(m_cOpenCL) == POINTER_INVALID)
     {
      uint input_total = input_data.Total();
      uint output_total = m_cOutputs.Total();
      uint input_neurons = input_total;
      if(prevLayer.Type() == defNeuronConv || prevLayer.Type() == defNeuronProof)
        {
         CNeuronProof *temp = prevLayer;
         input_neurons = temp.GetNeurons();
        }
      double array[];
      if(ArrayResize(array, m_iWindow) < 0)
         return false;
      for(uint f = 0; f < m_iWindowOut; f++)
        {
         uint shift_inp = f * input_neurons;
         uint shift_out = f * m_iNeurons;
         if(shift_inp >= input_total)
           {
            for(uint i = shift_out; i < output_total; i++)
               m_cOutputs.Update(i, 0);
            break;
           }
         for(uint o = 0; o < m_iNeurons; o++)
           {
            uint shift = o * m_iStep;
            for(uint i = 0; i < m_iWindow; i++)
               array[i] = ((shift_inp + shift + i) >= input_total || (shift + i) >= input_neurons ? 0 :
                           input_data.At(shift_inp + shift + i));
            switch(m_eActivation)
              {
               case ACT_MAX_POOLING:
                  m_cOutputs.Update(shift_out + o, array[ArrayMaximum(array)]);
                  break;
               case ACT_AVERAGE_POOLING:
                  m_cOutputs.Update(shift_out + o, MathMean(array));
                  break;
               default:
                  return false;
              }
           }
        }
     }
   else // ;>: @01>BK A OpenCL
     {
      //--- !>740=85 8 703@C7:0 A>45@68<>5 1CD5@>2 2 :>=B5:AB OpenCL
      if(input_data.GetIndex() < 0 && !input_data.BufferCreate(m_cOpenCL))
         return false;
      if(m_cOutputs.GetIndex() < 0 && !m_cOutputs.BufferCreate(m_cOpenCL))
         return false;
      //--- 5@540G0 ?0@0<5B@>2 2 :5@=5;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofFeedForward, def_prff_inputs, input_data.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofFeedForward, def_prff_outputs, m_cOutputs.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_inputs_total, input_data.Total()))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_window, m_iWindow))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_step, m_iStep))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_window_out, m_iWindowOut))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_activation, (int)m_eActivation))
         return false;
      //--- >AB0=>2:0 :5@=5;0 2 >G5@54L =0 2K?>;=5=85
      uint input_neurons = input_data.Total();
      if(prevLayer.Type() == defNeuronConv || prevLayer.Type() == defNeuronProof)
        {
         CNeuronProof *temp = prevLayer;
         input_neurons = temp.GetNeurons();
        }
      if(!m_cOpenCL.SetArgument(def_k_ProofFeedForward, def_prff_input_neurons, input_neurons))
         return false;
      int off_set[] = {0};
      int NDRange[] = {(int)m_iNeurons};
      if(!m_cOpenCL.Execute(def_k_ProofFeedForward, 1, off_set, NDRange))
         return false;
      //--- 03@C7:0 @57C;LB0B>2 @0AGQB0
      if(!m_cOutputs.BufferRead())
         return false;
      input_data.BufferFree();
     }
//---
   return true;
  }
//+------------------------------------------------------------------+
//| 5B>4 @0A?@545;5=8O 3@0485=B0 >H81:8 G5@57 A:@KBK9 A;>9          |
//+------------------------------------------------------------------+
bool CNeuronProof::CalcHiddenGradient(CNeuronBase *prevLayer)
  {
//--- ;>: :>=B@>;59
   if(CheckPointer(prevLayer) == POINTER_INVALID ||
      CheckPointer(m_cOutputs) == POINTER_INVALID ||
      CheckPointer(m_cGradients) == POINTER_INVALID ||
      CheckPointer(prevLayer.GetOutputs()) == POINTER_INVALID ||
      CheckPointer(prevLayer.GetGradients()) == POINTER_INVALID)
      return false;
   CBufferDouble *input_data = prevLayer.GetOutputs();
   CBufferDouble *input_gradient = prevLayer.GetGradients();
   if(!input_gradient.BufferInit(input_data.Total(), 0))
      return false;
//---   0725B2;5=85 0;3>@8B<0 2 7028A8<>AB8 >B CAB@>9AB0 2K?>;=5=88O >?5@0F89
   if(CheckPointer(m_cOpenCL) == POINTER_INVALID)
     {
      uint input_total = input_data.Total();
      uint output_total = m_cOutputs.Total();
      uint input_neurons = input_total;
      if(prevLayer.Type() == defNeuronConv || prevLayer.Type() == defNeuronProof)
        {
         CNeuronProof *temp = prevLayer;
         input_neurons = temp.GetNeurons();
        }
      for(uint f = 0; f < m_iWindowOut; f++)
        {
         uint shift_inp = f * input_neurons;
         uint shift_out = f * m_iNeurons;
         if(shift_inp >= input_total)
            break;
         for(uint o = 0; o < m_iNeurons; o++)
           {
            uint shift = o * m_iStep;
            double out = m_cOutputs.At(shift_out + o);
            double gradient = m_cGradients.At(shift_out + o);
            switch(m_eActivation)
              {
               case ACT_MAX_POOLING:
                  for(uint i = 0; i < m_iWindow; i++)
                    {
                     if((shift_inp + shift + i) >= input_total || (shift + i) >= input_neurons)
                        break;
                     if(input_data.At(shift_inp + shift + i) == out)
                       {
                        input_gradient.Update(shift_inp + shift + i,
                                              input_gradient.At(shift_inp + shift + i) + gradient);
                        break;
                       }
                    }
                  break;
               case ACT_AVERAGE_POOLING:
                  gradient /= (double)m_iWindow;
                  for(uint i = 0; i < m_iWindow; i++)
                    {
                     if((shift_inp + shift + i) >= input_total || (shift + i) >= input_neurons)
                        break;
                     input_gradient.Update(shift_inp + shift + i,
                                           input_gradient.At(shift_inp + shift + i) + gradient);
                    }
                  break;
               default:
                  return false;
              }
           }
        }
     }
   else    // ;>: @01>BK A OpenCL
     {
      //--- !>740=85 8 703@C7:0 A>45@68<>5 1CD5@>2 2 :>=B5:AB OpenCL
      if(input_data.GetIndex() < 0 && !input_data.BufferCreate(m_cOpenCL))
         return false;
      if(m_cOutputs.GetIndex() < 0 && !m_cOutputs.BufferCreate(m_cOpenCL))
         return false;
      if(input_gradient.GetIndex() < 0 && !input_gradient.BufferCreate(m_cOpenCL))
         return false;
      if(m_cGradients.GetIndex() < 0 && !m_cGradients.BufferCreate(m_cOpenCL))
         return false;
      //--- 5@540G0 ?0@0<5B@>2 2 :5@=5;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofHiddenGradients, def_prhgr_inputs, input_data.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofHiddenGradients, def_prhgr_outputs, m_cOutputs.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofHiddenGradients, def_prhgr_gradients, m_cGradients.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgumentBuffer(def_k_ProofHiddenGradients, def_prhgr_gradient_inputs, input_gradient.GetIndex()))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_inputs_total, input_data.Total()))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_window, m_iWindow))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_step, m_iStep))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_window_out, m_iWindowOut))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_activation, (int)m_eActivation))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_neurons, m_iNeurons))
         return false;
      if(!m_cOpenCL.SetArgument(def_k_ProofHiddenGradients, def_prhgr_outputs_total, m_cOutputs.Total()))
         return false;
      //--- >AB0=>2:0 :5@=5;0 2 >G5@54L =0 2K?>;=5=5
      uint input_neurons = input_data.Total();
      if(prevLayer.Type() == defNeuronConv || prevLayer.Type() == defNeuronProof)
        {
         CNeuronProof *temp = prevLayer;
         input_neurons = temp.GetNeurons();
        }
      int off_set[] = {0};
      int NDRange[] = {(int)input_neurons};
      if(!m_cOpenCL.Execute(def_k_ProofHiddenGradients, 1, off_set, NDRange))
         return false;
      //--- 03@C7:0 @57C;LB0B>2
      if(!input_gradient.BufferRead())
         return false;
      //--- G8AB:0 ?0<OB8 :>=B5:AB0 OpenCL
      input_data.BufferFree();
      m_cOutputs.BufferFree();
      m_cGradients.BufferFree();
     }
//---
   return true;
  }
//+------------------------------------------------------------------+
//| 5B>4 A>E@0=5=8O M;5<5=B>2 :0AA0 2 D09;                          |
//+------------------------------------------------------------------+
bool CNeuronProof::Save(const int file_handle)
  {
//--- ;>: :>=B@>;59
   if(file_handle == INVALID_HANDLE)
      return false;
//--- !>E@0=O5< :>=AB0=BK
   if(FileWriteInteger(file_handle, Type()) <= 0)
      return false;
   if(FileWriteInteger(file_handle, (int)m_iWindow) <= 0)
      return false;
   if(FileWriteInteger(file_handle, (int)m_iStep) <= 0)
      return false;
   if(FileWriteInteger(file_handle, (int)m_iWindowOut) <= 0)
      return false;
   if(FileWriteInteger(file_handle, (int)m_iNeurons) <= 0)
      return false;
   if(FileWriteInteger(file_handle, (int)m_eActivation) <= 0)
      return false;
//---
   return true;
  }
//+------------------------------------------------------------------+
//| 5B>4 2>AAB0=>2;5=8O @01>BK :;0AA0 87 D09;0                      |
//+------------------------------------------------------------------+
bool CNeuronProof::Load(const int file_handle)
  {
//--- ;>: :>=B@>;59
   if(file_handle == INVALID_HANDLE)
      return false;
//--- 03@C605< :>=AB0=BK
   m_iWindow = (uint)FileReadInteger(file_handle);
   m_iStep = (uint)FileReadInteger(file_handle);
   m_iWindowOut = (uint)FileReadInteger(file_handle);
   m_iNeurons = (uint)FileReadInteger(file_handle);
   m_eActivation = (ENUM_ACTIVATION)FileReadInteger(file_handle);
//--- =8F80;87B8@C5< 8 703@C605< 1CD5@ @57C;LB0B>2
   if(CheckPointer(m_cOutputs) == POINTER_INVALID)
     {
      m_cOutputs = new CBufferDouble();
      if(CheckPointer(m_cOutputs) == POINTER_INVALID)
         return false;
     }
   if(!m_cOutputs.BufferInit(m_iNeurons * m_iWindowOut, 0))
      return false;
//--- =8F80;878@C5< 8 703@C605< 1CD5@ 3@0485=B>2 >H81:8
   if(CheckPointer(m_cGradients) == POINTER_INVALID)
     {
      m_cGradients = new CBufferDouble();
      if(CheckPointer(m_cGradients) == POINTER_INVALID)
         return false;
     }
   if(!m_cGradients.BufferInit(m_iNeurons * m_iWindowOut, 0))
      return false;
//---
   return true;
  }
//+------------------------------------------------------------------+