// @(#)root/tmva $Id: TNeuronInputSqSum.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::TNeuronInputSqSum * * Web : http://tmva.sourceforge.net * * * * Description: * * TNeuron input calculator -- calculates the square * * of 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_TNeuronInputSqSum #define ROOT_TMVA_TNeuronInputSqSum ////////////////////////////////////////////////////////////////////////// // // // TNeuronInputSqSum // // // // TNeuron input calculator -- calculates the squared 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 TNeuronInputSqSum : public TNeuronInput { public: TNeuronInputSqSum() {} virtual ~TNeuronInputSqSum() {} // calculate the input value for the neuron Double_t GetInput( const TNeuron* neuron ) const { if (neuron->IsInputNeuron()) return 0; Double_t result = 0; for (Int_t i=0; i < neuron->NumPreLinks(); i++) { Double_t val = neuron->PreLinkAt(i)->GetWeightedValue(); result += val*val; } return result; } // name of the class TString GetName() { return "Sum of weighted activations squared"; } ClassDef(TNeuronInputSqSum,0) // Calculates square of weighted sum of neuron inputs }; } // namespace TMVA #endif