mlpack
gradient_visitor.hpp
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1 
13 #ifndef MLPACK_METHODS_ANN_VISITOR_GRADIENT_VISITOR_HPP
14 #define MLPACK_METHODS_ANN_VISITOR_GRADIENT_VISITOR_HPP
15 
16 #include <mlpack/methods/ann/layer/layer_traits.hpp>
17 #include <mlpack/methods/ann/layer/layer_types.hpp>
18 
19 #include <boost/variant.hpp>
20 
21 namespace mlpack {
22 namespace ann {
23 
28 class GradientVisitor : public boost::static_visitor<void>
29 {
30  public:
33  GradientVisitor(const arma::mat& input, const arma::mat& delta);
34 
36  GradientVisitor(const arma::mat& input,
37  const arma::mat& delta,
38  const size_t index);
39 
41  template<typename LayerType>
42  void operator()(LayerType* layer) const;
43 
44  void operator()(MoreTypes layer) const;
45 
46  private:
48  const arma::mat& input;
49 
51  const arma::mat& delta;
52 
54  size_t index;
55 
57  bool hasIndex;
58 
61  template<typename T>
62  typename std::enable_if<
63  HasGradientCheck<T, arma::mat&(T::*)()>::value &&
64  !HasRunCheck<T, bool&(T::*)(void)>::value, void>::type
65  LayerGradients(T* layer, arma::mat& input) const;
66 
69  template<typename T>
70  typename std::enable_if<
71  HasGradientCheck<T, arma::mat&(T::*)()>::value &&
72  HasRunCheck<T, bool&(T::*)(void)>::value, void>::type
73  LayerGradients(T* layer, arma::mat& input) const;
74 
77  template<typename T, typename P>
78  typename std::enable_if<
79  !HasGradientCheck<T, P&(T::*)()>::value, void>::type
80  LayerGradients(T* layer, P& input) const;
81 };
82 
83 } // namespace ann
84 } // namespace mlpack
85 
86 // Include implementation.
87 #include "gradient_visitor_impl.hpp"
88 
89 #endif
layer_traits.hpp
mlpack
Linear algebra utility functions, generally performed on matrices or vectors.
Definition: add_to_po.hpp:21
mlpack::ann::GradientVisitor::GradientVisitor
GradientVisitor(const arma::mat &input, const arma::mat &delta)
Executes the Gradient() method of the given module using the input and delta parameter.
mlpack::ann::MoreTypes
boost::variant< Glimpse< arma::mat, arma::mat > *, Highway< arma::mat, arma::mat > *, Recurrent< arma::mat, arma::mat > *, RecurrentAttention< arma::mat, arma::mat > *, ReinforceNormal< arma::mat, arma::mat > *, Reparametrization< arma::mat, arma::mat > *, Select< arma::mat, arma::mat > *, Sequential< arma::mat, arma::mat, false > *, Sequential< arma::mat, arma::mat, true > *, Subview< arma::mat, arma::mat > *, VRClassReward< arma::mat, arma::mat > *, VirtualBatchNorm< arma::mat, arma::mat > *, RBF< arma::mat, arma::mat, GaussianFunction > *, BaseLayer< GaussianFunction, arma::mat, arma::mat > *> MoreTypes
Definition: layer_types.hpp:221
mlpack::ann::GradientVisitor
SearchModeVisitor executes the Gradient() method of the given module using the input and delta parame...
Definition: gradient_visitor.hpp:28
layer_types.hpp
mlpack::ann::GradientVisitor::operator()
void operator()(LayerType *layer) const
Executes the Gradient() method.