template<typename Architecture_t>
class TMVA::DNN::TSharedLayer< Architecture_t >

Layer class width shared weight and bias layers.

Like the Layer class only that weight matrices are shared between different instances of the net, which can be used to implement multithreading 'Hogwild' style.

Definition at line 147 of file Layer.h.

Public Types
using	Matrix_t = typename Architecture_t::Matrix_t

using	Scalar_t = typename Architecture_t::Scalar_t

using	Tensor_t = typename Architecture_t::Tensor_t

Public Member Functions
	TSharedLayer (const TSharedLayer &layer)

	TSharedLayer (size_t fBatchSize, TLayer< Architecture_t > &layer)

void	Backward (Matrix_t &gradients_backward, const Matrix_t &activations_backward, ERegularization r, Scalar_t weightDecay)
	Compute weight, bias and activation gradients.

void	Forward (Matrix_t &input, bool applyDropout=false)
	Compute activation of the layer for the given input.

EActivationFunction	GetActivationFunction () const

Matrix_t &	GetActivationGradients ()

const Matrix_t &	GetActivationGradients () const

size_t	GetBatchSize () const

Matrix_t &	GetBiases ()

const Matrix_t &	GetBiases () const

Matrix_t &	GetBiasGradients ()

const Matrix_t &	GetBiasGradients () const

size_t	GetDropoutProbability () const

size_t	GetInputWidth () const

Matrix_t &	GetOutput ()

const Matrix_t &	GetOutput () const

Matrix_t &	GetWeightGradients ()

const Matrix_t &	GetWeightGradients () const

Matrix_t &	GetWeights () const

size_t	GetWidth () const

void	Print () const

void	SetDropoutProbability (Scalar_t p)

Private Attributes
Matrix_t	fActivationGradients
	Gradients w.r.t. the activations of this layer.

size_t	fBatchSize
	Batch size used for training and evaluation.

Matrix_t &	fBiases
	Reference to the bias vectors of this layer.

Matrix_t	fBiasGradients
	Gradients w.r.t. the bias values of this layer.

Matrix_t	fDerivatives
	First fDerivatives of the activations of this layer.

Scalar_t	fDropoutProbability
	Probability that an input is active.

EActivationFunction	fF
	Activation function of the layer.

size_t	fInputWidth
	Number of neurons of the previous layer.

Matrix_t	fOutput
	Activations of this layer.

Matrix_t	fWeightGradients
	Gradients w.r.t. the weigths of this layer.

Matrix_t &	fWeights
	Reference to the weight matrix of this layer.

size_t	fWidth
	Number of neurons of this layer.

#include <TMVA/DNN/Layer.h>

Member Typedef Documentation

◆ Matrix_t

template<typename Architecture_t >

using TMVA::DNN::TSharedLayer< Architecture_t >::Matrix_t = typename Architecture_t::Matrix_t

Definition at line 153 of file Layer.h.

◆ Scalar_t

template<typename Architecture_t >

using TMVA::DNN::TSharedLayer< Architecture_t >::Scalar_t = typename Architecture_t::Scalar_t

Definition at line 152 of file Layer.h.

◆ Tensor_t

template<typename Architecture_t >

using TMVA::DNN::TSharedLayer< Architecture_t >::Tensor_t = typename Architecture_t::Tensor_t

Definition at line 154 of file Layer.h.

Constructor & Destructor Documentation

◆ TSharedLayer() [1/2]

template<typename Architecture_t >

TMVA::DNN::TSharedLayer< Architecture_t >::TSharedLayer	(	size_t	fBatchSize,
		TLayer< Architecture_t > &	layer
	)

Definition at line 328 of file Layer.h.

◆ TSharedLayer() [2/2]

template<typename Architecture_t >

TMVA::DNN::TSharedLayer< Architecture_t >::TSharedLayer ( const TSharedLayer< Architecture_t > & layer )

Definition at line 343 of file Layer.h.

Member Function Documentation

◆ Backward()

template<typename Architecture_t >

auto TMVA::DNN::TSharedLayer< Architecture_t >::Backward	(	Matrix_t &	gradients_backward,
		const Matrix_t &	activations_backward,
		ERegularization	r,
		Scalar_t	weightDecay
	)

inline

Compute weight, bias and activation gradients.

Uses the precomputed first partial derviatives of the activation function computed during forward propagation and modifies them. Must only be called directly a the corresponding call to Forward(...).

Definition at line 373 of file Layer.h.

◆ Forward()

template<typename Architecture_t >

auto TMVA::DNN::TSharedLayer< Architecture_t >::Forward	(	Matrix_t &	input,
		bool	applyDropout = `false`
	)

inline

Compute activation of the layer for the given input.

The input must be in matrix form with the different rows corresponding to different events in the batch. Computes activations as well as the first partial derivative of the activation function at those activations.

Definition at line 356 of file Layer.h.

◆ GetActivationFunction()

template<typename Architecture_t >

EActivationFunction TMVA::DNN::TSharedLayer< Architecture_t >::GetActivationFunction ( ) const

inline

Definition at line 205 of file Layer.h.

◆ GetActivationGradients() [1/2]

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetActivationGradients ( )

inline

Definition at line 212 of file Layer.h.

◆ GetActivationGradients() [2/2]

template<typename Architecture_t >

const Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetActivationGradients ( ) const

inline

Definition at line 213 of file Layer.h.

◆ GetBatchSize()

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::GetBatchSize ( ) const

inline

Definition at line 198 of file Layer.h.

◆ GetBiases() [1/2]

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetBiases ( )

inline

Definition at line 210 of file Layer.h.

◆ GetBiases() [2/2]

template<typename Architecture_t >

const Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetBiases ( ) const

inline

Definition at line 211 of file Layer.h.

◆ GetBiasGradients() [1/2]

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetBiasGradients ( )

inline

Definition at line 214 of file Layer.h.

◆ GetBiasGradients() [2/2]

template<typename Architecture_t >

const Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetBiasGradients ( ) const

inline

Definition at line 215 of file Layer.h.

◆ GetDropoutProbability()

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::GetDropoutProbability ( ) const

inline

Definition at line 201 of file Layer.h.

◆ GetInputWidth()

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::GetInputWidth ( ) const

inline

Definition at line 199 of file Layer.h.

◆ GetOutput() [1/2]

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetOutput ( )

inline

Definition at line 207 of file Layer.h.

◆ GetOutput() [2/2]

template<typename Architecture_t >

const Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetOutput ( ) const

inline

Definition at line 208 of file Layer.h.

◆ GetWeightGradients() [1/2]

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetWeightGradients ( )

inline

Definition at line 216 of file Layer.h.

◆ GetWeightGradients() [2/2]

template<typename Architecture_t >

const Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetWeightGradients ( ) const

inline

Definition at line 217 of file Layer.h.

◆ GetWeights()

template<typename Architecture_t >

Matrix_t & TMVA::DNN::TSharedLayer< Architecture_t >::GetWeights ( ) const

inline

Definition at line 209 of file Layer.h.

◆ GetWidth()

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::GetWidth ( ) const

inline

Definition at line 200 of file Layer.h.

◆ Print()

template<typename Architecture_t >

void TMVA::DNN::TSharedLayer< Architecture_t >::Print

Definition at line 393 of file Layer.h.

◆ SetDropoutProbability()

template<typename Architecture_t >

void TMVA::DNN::TSharedLayer< Architecture_t >::SetDropoutProbability ( Scalar_t p )

inline

Definition at line 203 of file Layer.h.

Member Data Documentation

◆ fActivationGradients

template<typename Architecture_t >

Matrix_t TMVA::DNN::TSharedLayer< Architecture_t >::fActivationGradients

private

Gradients w.r.t. the activations of this layer.

Definition at line 171 of file Layer.h.

◆ fBatchSize

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::fBatchSize

private

Batch size used for training and evaluation.

Definition at line 159 of file Layer.h.

◆ fBiases

template<typename Architecture_t >

Matrix_t& TMVA::DNN::TSharedLayer< Architecture_t >::fBiases

private

Reference to the bias vectors of this layer.

Definition at line 166 of file Layer.h.

◆ fBiasGradients

template<typename Architecture_t >

Matrix_t TMVA::DNN::TSharedLayer< Architecture_t >::fBiasGradients

private

Gradients w.r.t. the bias values of this layer.

Definition at line 170 of file Layer.h.

◆ fDerivatives

template<typename Architecture_t >

Matrix_t TMVA::DNN::TSharedLayer< Architecture_t >::fDerivatives

private

First fDerivatives of the activations of this layer.

Definition at line 168 of file Layer.h.

◆ fDropoutProbability

template<typename Architecture_t >

Scalar_t TMVA::DNN::TSharedLayer< Architecture_t >::fDropoutProbability

private

Probability that an input is active.

Definition at line 163 of file Layer.h.

◆ fF

template<typename Architecture_t >

EActivationFunction TMVA::DNN::TSharedLayer< Architecture_t >::fF

private

Activation function of the layer.

Definition at line 173 of file Layer.h.

◆ fInputWidth

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::fInputWidth

private

Number of neurons of the previous layer.

Definition at line 160 of file Layer.h.

◆ fOutput

template<typename Architecture_t >

Matrix_t TMVA::DNN::TSharedLayer< Architecture_t >::fOutput

private

Activations of this layer.

Definition at line 167 of file Layer.h.

◆ fWeightGradients

template<typename Architecture_t >

Matrix_t TMVA::DNN::TSharedLayer< Architecture_t >::fWeightGradients

private

Gradients w.r.t. the weigths of this layer.

Definition at line 169 of file Layer.h.

◆ fWeights

template<typename Architecture_t >

Matrix_t& TMVA::DNN::TSharedLayer< Architecture_t >::fWeights

private

Reference to the weight matrix of this layer.

Definition at line 165 of file Layer.h.

◆ fWidth

template<typename Architecture_t >

size_t TMVA::DNN::TSharedLayer< Architecture_t >::fWidth

private

Number of neurons of this layer.

Definition at line 161 of file Layer.h.

tmva/tmva/inc/TMVA/DNN/Layer.h

Public Types

Public Member Functions

Private Attributes

Member Typedef Documentation

◆ Matrix_t

◆ Scalar_t

◆ Tensor_t

Constructor & Destructor Documentation

◆ TSharedLayer() [1/2]

◆ TSharedLayer() [2/2]

Member Function Documentation

◆ Backward()

◆ Forward()

◆ GetActivationFunction()

◆ GetActivationGradients() [1/2]

◆ GetActivationGradients() [2/2]

◆ GetBatchSize()

◆ GetBiases() [1/2]

◆ GetBiases() [2/2]

◆ GetBiasGradients() [1/2]

◆ GetBiasGradients() [2/2]

◆ GetDropoutProbability()

◆ GetInputWidth()

◆ GetOutput() [1/2]

◆ GetOutput() [2/2]

◆ GetWeightGradients() [1/2]

◆ GetWeightGradients() [2/2]

◆ GetWeights()

◆ GetWidth()

◆ Print()

◆ SetDropoutProbability()

Member Data Documentation

◆ fActivationGradients

◆ fBatchSize

◆ fBiases

◆ fBiasGradients

◆ fDerivatives

◆ fDropoutProbability

◆ fF

◆ fInputWidth

◆ fOutput

◆ fWeightGradients

◆ fWeights

◆ fWidth