Implementation of the SpatialDropout layer. More...

Inheritance diagram for SpatialDropoutType< InputType, OutputType >:

Public Member Functions
	SpatialDropoutType ()
	Create the SpatialDropout object. More...

	SpatialDropoutType (const size_t size, const double ratio=0.5)
	Create the SpatialDropout object using the specified parameters. More...

void	Backward (const InputType &input, const OutputType &gy, OutputType &g)
	Ordinary feed backward pass of the SpatialDropout layer. More...

SpatialDropoutType *	Clone () const
	Clone the SpatialDropoutType object. This handles polymorphism correctly. More...

void	Forward (const InputType &input, OutputType &output)
	Ordinary feed forward pass of the SpatialDropout layer. More...

double	Ratio () const
	Get the probability value. More...

void	Ratio (const double r)
	Modify the probability value. More...

template < typename Archive >
void	serialize (Archive &ar, const uint32_t)
	Serialize the layer. More...

size_t	Size () const
	Get the number of channels. More...

size_t &	Size ()
	Modify the number of channels. More...

Public Member Functions inherited from Layer< InputType, OutputType >
	Layer ()
	Default constructor. More...

	Layer (const Layer &layer)
	Copy constructor. This is not responsible for copying weights! More...

	Layer (Layer &&layer)
	Move constructor. This is not responsible for moving weights! More...

virtual	~Layer ()
	Default deconstructor. More...

virtual void	Backward (const InputType &, const InputType &, InputType &)
	Performs a backpropagation step through the layer, with respect to the given input. More...

virtual void	ComputeOutputDimensions ()
	Compute the output dimensions. More...

virtual void	CustomInitialize (InputType &, const size_t)
	Override the weight matrix of the layer. More...

virtual void	Forward (const InputType &, InputType &)
	Takes an input object, and computes the corresponding output of the layer. More...

virtual void	Forward (const InputType &, const InputType &)
	Takes an input and output object, and computes the corresponding loss of the layer. More...

virtual void	Gradient (const InputType &, const InputType &, InputType &)
	Computing the gradient of the layer with respect to its own input. More...

const std::vector< size_t > &	InputDimensions () const
	Get the input dimensions. More...

std::vector< size_t > &	InputDimensions ()
	Modify the input dimensions. More...

virtual double	Loss ()
	Get the layer loss. More...

virtual Layer &	operator= (const Layer &layer)
	Copy assignment operator. This is not responsible for copying weights! More...

virtual Layer &	operator= (Layer &&layer)
	Move assignment operator. This is not responsible for moving weights! More...

const std::vector< size_t > &	OutputDimensions ()
	Get the output dimensions. More...

virtual size_t	OutputSize () final
	Get the number of elements in the output from this layer. More...

virtual const InputType &	Parameters () const
	Get the parameters. More...

virtual InputType &	Parameters ()
	Set the parameters. More...

void	serialize (Archive &ar, const uint32_t)
	Serialize the layer. More...

virtual void	SetWeights (typename InputType ::elem_type *)
	Reset the layer parameter. More...

virtual bool const &	Training () const
	Get whether the layer is currently in training mode. More...

virtual bool &	Training ()
	Modify whether the layer is currently in training mode. More...

virtual size_t	WeightSize () const
	Get the total number of trainable weights in the layer. More...

Additional Inherited Members
Protected Attributes inherited from Layer< InputType, OutputType >
std::vector< size_t >	inputDimensions
	Logical input dimensions of each point. More...

std::vector< size_t >	outputDimensions
	Logical output dimensions of each point. More...

bool	training
	If true, the layer is in training mode; otherwise, it is in testing mode. More...

bool	validOutputDimensions
	This is `true` if `ComputeOutputDimensions()` has been called, and `outputDimensions` can be considered to be up-to-date. More...

Detailed Description

template
<
typename
InputType
=
arma::mat
,
typename
OutputType
=
arma::mat
>

class mlpack::ann::SpatialDropoutType< InputType, OutputType >

Implementation of the SpatialDropout layer.

For more information, refer to the following paper,

@article{Tompson15,
  author    = {Jonathan Tompson, Ross Goroshin, Arjun Jain,
               Yann LeCun, Christopher Bregler},
  title     = {Efficient Object Localization Using Convolutional Networks},
  journal   = {CoRR},
  volume    = {abs/1411.4280},
  year      = {2015},
  url       = {https://arxiv.org/abs/1411.4280},
  eprint    = {1411.4280},
}

Template Parameters

InputType	The type of the layer's inputs. The layer automatically cast inputs to this type (Default: arma::mat).
OutputType	The type of the computation which also causes the output to also be in this type. The type also allows the computation and weight type to differ from the input type (Default: arma::mat).

Definition at line 50 of file spatial_dropout.hpp.

Constructor & Destructor Documentation

◆ SpatialDropoutType() [1/2]

SpatialDropoutType ( )

Create the SpatialDropout object.

Referenced by SpatialDropoutType< InputType, OutputType >::Clone().

◆ SpatialDropoutType() [2/2]

SpatialDropoutType	(	const size_t	size,
		const double	ratio = `0.5`
	)

Create the SpatialDropout object using the specified parameters.

Parameters

size	The number of channels of each input image.
ratio	The probability of each channel getting dropped.

Member Function Documentation

◆ Backward()

void Backward	(	const InputType &	input,
		const OutputType &	gy,
		OutputType &	g
	)

Ordinary feed backward pass of the SpatialDropout layer.

Parameters

input	The propagated input activation.
gy	The backpropagated error.
g	The calculated gradient.

Referenced by SpatialDropoutType< InputType, OutputType >::Clone().

◆ Clone()

SpatialDropoutType* Clone ( ) const

inlinevirtual

Clone the SpatialDropoutType object. This handles polymorphism correctly.

Implements Layer< InputType, OutputType >.

Definition at line 65 of file spatial_dropout.hpp.

References SpatialDropoutType< InputType, OutputType >::Backward(), SpatialDropoutType< InputType, OutputType >::Forward(), and SpatialDropoutType< InputType, OutputType >::SpatialDropoutType().

◆ Forward()

void Forward	(	const InputType &	input,
		OutputType &	output
	)

Ordinary feed forward pass of the SpatialDropout layer.

Parameters

input	Input data used for evaluating the specified function.
output	Resulting output activation.

Referenced by SpatialDropoutType< InputType, OutputType >::Clone().

◆ Ratio() [1/2]

double Ratio ( ) const

inline

Get the probability value.

Definition at line 91 of file spatial_dropout.hpp.

◆ Ratio() [2/2]

void Ratio ( const double r )

inline

Modify the probability value.

Definition at line 94 of file spatial_dropout.hpp.

References SpatialDropoutType< InputType, OutputType >::serialize().

◆ serialize()

void serialize	(	Archive &	ar,
		const uint32_t
	)

Serialize the layer.

Referenced by SpatialDropoutType< InputType, OutputType >::Ratio().

◆ Size() [1/2]

size_t Size ( ) const

inline

Get the number of channels.

Definition at line 85 of file spatial_dropout.hpp.

◆ Size() [2/2]

size_t& Size ( )

inline

Modify the number of channels.

Definition at line 88 of file spatial_dropout.hpp.

The documentation for this class was generated from the following file:

/home/jenkins-mlpack/mlpack.org/_src/mlpack-git/src/mlpack/methods/ann/layer/not_adapted/spatial_dropout.hpp

Public Member Functions

Additional Inherited Members

Detailed Description

template<typenameInputType=arma::mat,typenameOutputType=arma::mat> class mlpack::ann::SpatialDropoutType< InputType, OutputType >

Constructor & Destructor Documentation

◆ SpatialDropoutType() [1/2]

◆ SpatialDropoutType() [2/2]

Member Function Documentation

◆ Backward()

◆ Clone()

◆ Forward()

◆ Ratio() [1/2]

◆ Ratio() [2/2]

◆ serialize()

◆ Size() [1/2]

◆ Size() [2/2]

template
<
typename
InputType
=
arma::mat
,
typename
OutputType
=
arma::mat
>

class mlpack::ann::SpatialDropoutType< InputType, OutputType >