elu.hpp

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#ifndef MLPACK_METHODS_ANN_LAYER_ELU_HPP
#define MLPACK_METHODS_ANN_LAYER_ELU_HPP
 
#include <mlpack/prereqs.hpp>
 
namespace mlpack {
namespace ann  {
 
template <
    typename InputDataType = arma::mat,
    typename OutputDataType = arma::mat
>
class ELU
{
 public:
  ELU();
 
  ELU(const double alpha);
 
  template<typename InputType, typename OutputType>
  void Forward(const InputType& input, OutputType& output);
 
  template<typename DataType>
  void Backward(const DataType& input, const DataType& gy, DataType& g);
 
  OutputDataType const& OutputParameter() const { return outputParameter; }
  OutputDataType& OutputParameter() { return outputParameter; }
 
  OutputDataType const& Delta() const { return delta; }
  OutputDataType& Delta() { return delta; }
 
  double const& Alpha() const { return alpha; }
  double& Alpha() { return alpha; }
 
  bool Deterministic() const { return deterministic; }
  bool& Deterministic() { return deterministic; }
 
  double const& Lambda() const { return lambda; }
 
  template<typename Archive>
  void serialize(Archive& ar, const unsigned int /* version */);
 
 private:
  OutputDataType delta;
 
  OutputDataType outputParameter;
 
  arma::mat derivative;
 
  double alpha;
 
  double lambda;
 
  bool deterministic;
}; // class ELU
 
// Template alias for SELU using ELU class.
using SELU = ELU<arma::mat, arma::mat>;
 
} // namespace ann
} // namespace mlpack
 
// Include implementation.
#include "elu_impl.hpp"
 
#endif