ROOT logo
// @(#)root/tmva $Id: TNeuronInputSum.h 29122 2009-06-22 06:51:30Z brun $
// Author: Matt Jachowski

/**********************************************************************************
 * Project: TMVA - a Root-integrated toolkit for multivariate data analysis       *
 * Package: TMVA                                                                  *
 * Class  : TMVA::TNeuronInputSum                                                 *
 * Web    : http://tmva.sourceforge.net                                           *
 *                                                                                *
 * Description:                                                                   *
 *      TNeuron input calculator -- calculates the weighted sum of inputs.        *
 *                                                                                *
 * Authors (alphabetical):                                                        *
 *      Matt Jachowski  <jachowski@stanford.edu> - Stanford University, USA       *
 *                                                                                *
 * Copyright (c) 2005:                                                            *
 *      CERN, Switzerland                                                         *
 *                                                                                *
 * Redistribution and use in source and binary forms, with or without             *
 * modification, are permitted according to the terms listed in LICENSE           *
 * (http://tmva.sourceforge.net/LICENSE)                                          *
 **********************************************************************************/
 

#ifndef ROOT_TMVA_TNeuronInputSum
#define ROOT_TMVA_TNeuronInputSum

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TNeuronInputSum                                                      //
//                                                                      //
// TNeuron input calculator -- calculates the weighted sum of inputs    //
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#ifndef ROOT_TObject
#include "TObject.h"
#endif
#ifndef ROOT_TString
#include "TString.h"
#endif

#ifndef ROOT_TMVA_TNeuronInput
#include "TMVA/TNeuronInput.h"
#endif
#ifndef ROOT_TMVA_TNeuron
#include "TMVA/TNeuron.h"
#endif

namespace TMVA {

   class TNeuronInputSum : public TNeuronInput {
    
   public:

      TNeuronInputSum() {}
      virtual ~TNeuronInputSum() {}

      // calculate input value for neuron
      Double_t GetInput( const TNeuron* neuron ) const {
         if (neuron->IsInputNeuron()) return 0;
         Double_t result = 0;
	 Int_t npl = neuron->NumPreLinks();
         for (Int_t i=0; i < npl; i++) {
            result += neuron->PreLinkAt(i)->GetWeightedValue();
         }
         return result;
      }

      // name of class
      TString GetName() { return "Sum of weighted activations"; }

      ClassDef(TNeuronInputSum,0) // Calculates weighted sum of neuron inputs
   };

} // namespace TMVA

#endif
 TNeuronInputSum.h:1
 TNeuronInputSum.h:2
 TNeuronInputSum.h:3
 TNeuronInputSum.h:4
 TNeuronInputSum.h:5
 TNeuronInputSum.h:6
 TNeuronInputSum.h:7
 TNeuronInputSum.h:8
 TNeuronInputSum.h:9
 TNeuronInputSum.h:10
 TNeuronInputSum.h:11
 TNeuronInputSum.h:12
 TNeuronInputSum.h:13
 TNeuronInputSum.h:14
 TNeuronInputSum.h:15
 TNeuronInputSum.h:16
 TNeuronInputSum.h:17
 TNeuronInputSum.h:18
 TNeuronInputSum.h:19
 TNeuronInputSum.h:20
 TNeuronInputSum.h:21
 TNeuronInputSum.h:22
 TNeuronInputSum.h:23
 TNeuronInputSum.h:24
 TNeuronInputSum.h:25
 TNeuronInputSum.h:26
 TNeuronInputSum.h:27
 TNeuronInputSum.h:28
 TNeuronInputSum.h:29
 TNeuronInputSum.h:30
 TNeuronInputSum.h:31
 TNeuronInputSum.h:32
 TNeuronInputSum.h:33
 TNeuronInputSum.h:34
 TNeuronInputSum.h:35
 TNeuronInputSum.h:36
 TNeuronInputSum.h:37
 TNeuronInputSum.h:38
 TNeuronInputSum.h:39
 TNeuronInputSum.h:40
 TNeuronInputSum.h:41
 TNeuronInputSum.h:42
 TNeuronInputSum.h:43
 TNeuronInputSum.h:44
 TNeuronInputSum.h:45
 TNeuronInputSum.h:46
 TNeuronInputSum.h:47
 TNeuronInputSum.h:48
 TNeuronInputSum.h:49
 TNeuronInputSum.h:50
 TNeuronInputSum.h:51
 TNeuronInputSum.h:52
 TNeuronInputSum.h:53
 TNeuronInputSum.h:54
 TNeuronInputSum.h:55
 TNeuronInputSum.h:56
 TNeuronInputSum.h:57
 TNeuronInputSum.h:58
 TNeuronInputSum.h:59
 TNeuronInputSum.h:60
 TNeuronInputSum.h:61
 TNeuronInputSum.h:62
 TNeuronInputSum.h:63
 TNeuronInputSum.h:64
 TNeuronInputSum.h:65
 TNeuronInputSum.h:66
 TNeuronInputSum.h:67
 TNeuronInputSum.h:68
 TNeuronInputSum.h:69
 TNeuronInputSum.h:70
 TNeuronInputSum.h:71
 TNeuronInputSum.h:72
 TNeuronInputSum.h:73
 TNeuronInputSum.h:74
 TNeuronInputSum.h:75
 TNeuronInputSum.h:76
 TNeuronInputSum.h:77
 TNeuronInputSum.h:78