/usr/include/root/TMVA/TActivationSigmoid.h is in libroot-tmva-dev 5.34.19+dfsg-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | // @(#)root/tmva $Id$
// Author: Matt Jachowski
/**********************************************************************************
* Project: TMVA - a Root-integrated toolkit for multivariate data analysis *
* Package: TMVA *
* Class : TMVA::TActivationSigmoid *
* Web : http://tmva.sourceforge.net *
* *
* Description: *
* Sigmoid activation function for TNeuron *
* *
* 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_TActivationSigmoid
#define ROOT_TMVA_TActivationSigmoid
//////////////////////////////////////////////////////////////////////////
// //
// TActivationSigmoid //
// //
// Sigmoid activation function for TNeuron //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TFormula
#include "TFormula.h"
#endif
#ifndef ROOT_TString
#include "TString.h"
#endif
#ifndef ROOT_TMVA_TActivation
#include "TMVA/TActivation.h"
#endif
namespace TMVA {
class TActivationSigmoid : public TActivation {
public:
TActivationSigmoid();
~TActivationSigmoid();
// evaluate the activation function
Double_t Eval(Double_t arg);
// evaluate the derivative of the activation function
Double_t EvalDerivative(Double_t arg);
// minimum of the range of the activation function
Double_t GetMin() { return 0; }
// maximum of the range of the activation function
Double_t GetMax() { return 1; }
// expression for the activation function
TString GetExpression();
// writer of function code
virtual void MakeFunction(std::ostream& fout, const TString& fncName);
private:
TFormula* fEqn; // equation of sigmoid
TFormula* fEqnDerivative; // equation of sigmoid derivative
ClassDef(TActivationSigmoid,0) // Sigmoid activation function for TNeuron
};
} // namespace TMVA
#endif
|