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Retina Class Reference

#include <retina.h>

Inheritance diagram for Retina:

[legend]Collaboration diagram for Retina:

[legend]List of all members.

Detailed Description

Basic retina implemented as a transparent window into the world.

Definition at line 70 of file retina.h.

Public Methods

Retina (string name_i, Dimensions dims, ActivationFunction *actfn_=0, Activity size_scale_=1.0)

virtual void activate (bool=false, bool=false, bool=false)

Activate the map given the current inputs.

void set_input (const Retinal_Obj *const obj)

Make the retina point to a particular view of the world.

virtual bool is_plastic () const

Returns true if this region might contain modifiable weights.

double size_connection_bytes () const

Returns the size of this region, in terms of the number of bytes taken to store its connections.

double size_unique_connections () const

Returns the size of this region, in terms of the number of connections which might hold unique values.

Protected Attributes

const Retinal_Obj * world_model

Most-recently-selected world view.

const OwningPointer< ActivationFunction > actfn

Activation function, generally at most thresholding.

const Activity xo

Offset relative to the origin; this allows drawing to be aligned properly even when retina has been expanded as a buffer for later regions.

const Activity yo

See xo.

const Activity size_scale

Size scale relative to ther previous region; this allows drawing to be sized properly even when retina is of a different magnification than later regions.

Member Function Documentation

virtual void Retina::activate ( bool = false,

bool = false,

bool = false

) [inline, virtual]

Activate the map given the current inputs.
Must be implemented by derived classes.
Implements NeuralRegion.
Definition at line 80 of file retina.h.
References draw(), and NeuralRegion::output.

virtual bool Retina::is_plastic ( ) const [inline, virtual]

Returns true if this region might contain modifiable weights.
Regions are assumed to be modifiable unless they declare otherwise.
Reimplemented from NeuralRegion.
Definition at line 88 of file retina.h.

double Retina::size_connection_bytes ( ) const [inline, virtual]

Returns the size of this region, in terms of the number of bytes taken to store its connections.
Required to be implemented by each type of region.
Implements NeuralRegion.
Definition at line 90 of file retina.h.

double Retina::size_unique_connections ( ) const [inline, virtual]

Returns the size of this region, in terms of the number of connections which might hold unique values.
(This might be different from the total number of connections if e.g. some connections are shared between different units.)
Implements NeuralRegion.
Definition at line 91 of file retina.h.

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

retina.h

Generated on Mon Jan 20 02:37:12 2003 for RF-LISSOM by

1.3-rc2


Public Methods
	Retina (string name_i, Dimensions dims, ActivationFunction *actfn_=0, Activity size_scale_=1.0)
virtual void	activate (bool=false, bool=false, bool=false)
	Activate the map given the current inputs.
void	set_input (const Retinal_Obj *const obj)
	Make the retina point to a particular view of the world.
virtual bool	is_plastic () const
	Returns true if this region might contain modifiable weights.
double	size_connection_bytes () const
	Returns the size of this region, in terms of the number of bytes taken to store its connections.
double	size_unique_connections () const
	Returns the size of this region, in terms of the number of connections which might hold unique values.
Protected Attributes
const Retinal_Obj *	world_model
	Most-recently-selected world view.
const OwningPointer< ActivationFunction >	actfn
	Activation function, generally at most thresholding.
const Activity	xo
	Offset relative to the origin; this allows drawing to be aligned properly even when retina has been expanded as a buffer for later regions.
const Activity	yo
	See xo.
const Activity	size_scale
	Size scale relative to ther previous region; this allows drawing to be sized properly even when retina is of a different magnification than later regions.