neural gas class. More...

#include <neuralgas.h>

Inheritance diagram for NeuralGas:

Collaboration diagram for NeuralGas:

Public Member Functions
	NeuralGas (const std::string &name="NeuralGas", const std::string &revision="$Id$")

	NeuralGas (double lambda, double eps, int maxTime, const std::string &name="NeuralGas", const std::string &revision="$Id$")
	create a som More...

virtual	~NeuralGas ()

virtual void	init (unsigned int inputDim, unsigned int outputDim, double unit_map=0.0, RandGen *randGen=0)
	initialised som More...

virtual const matrix::Matrix	process (const matrix::Matrix &input)
	passive processing of the input (this function is not constant since a recurrent network for example might change internal states More...

virtual const matrix::Matrix	learn (const matrix::Matrix &input, const matrix::Matrix &nom_output, double learnRateFactor=1)

virtual void	damp (double damping)
	damps the weights and the biases by multiplying (1-damping) More...

virtual unsigned int	getInputDim () const
	returns the number of input neurons More...

virtual unsigned int	getOutputDim () const
	returns the number of output neurons More...

virtual bool	store (FILE *f) const
	stores the object to the given file stream (ASCII preferred). More...

virtual bool	restore (FILE *f)
	loads the object from the given file stream (ASCII preferred). More...

virtual void	printWeights (FILE *f) const

virtual void	printCellsizes (FILE *f) const

Public Member Functions inherited from AbstractModel
	AbstractModel (const std::string &name, const std::string &revision)

virtual	~AbstractModel ()

Public Member Functions inherited from Configurable
	Configurable ()

	Configurable (const std::string &name, const std::string &revision)
	intialise with name and revision (use "$ID$") More...

virtual	~Configurable ()

virtual void	notifyOnChange (const paramkey &key)
	Is called when a parameter was changes via setParam(). More...

virtual void	addParameter (const paramkey &key, paramval *val, paramval minBound, paramval maxBound, const paramdescr &descr=paramdescr())
	This is the new style for adding configurable parameters. More...

virtual void	addParameter (const paramkey &key, paramval *val, const paramdescr &descr=paramdescr())
	See addParameter(const paramkey& key, paramval* val, paramval minBound, paramval maxBound, const paramdescr& descr) More...

virtual void	addParameter (const paramkey &key, parambool *val, const paramdescr &descr=paramdescr())
	See addParameter(const paramkey& key, paramval* val) but for bool values. More...

virtual void	addParameter (const paramkey &key, paramint *val, paramint minBound, paramint maxBound, const paramdescr &descr=paramdescr())
	See addParameter(const paramkey& key, paramval* val) but for int values. More...

virtual void	addParameter (const paramkey &key, paramint *val, const paramdescr &descr=paramdescr())

virtual void	addParameterDef (const paramkey &key, paramval *val, paramval def, paramval minBound, paramval maxBound, const paramdescr &descr=paramdescr())
	This function is only provided for convenience. More...

virtual void	addParameterDef (const paramkey &key, paramval *val, paramval def, const paramdescr &descr=paramdescr())

virtual void	addParameterDef (const paramkey &key, parambool *val, parambool def, const paramdescr &descr=paramdescr())
	See addParameterDef(const paramkey&, paramval*, paramval) More...

virtual void	addParameterDef (const paramkey &key, paramint *val, paramint def, paramint minBound, paramint maxBound, const paramdescr &descr=paramdescr())
	See addParameterDef(const paramkey&, paramval*, paramval) More...

virtual void	addParameterDef (const paramkey &key, paramint *val, paramint def, const paramdescr &descr=paramdescr())

virtual void	setParamDescr (const paramkey &key, const paramdescr &descr, bool traverseChildren=true)
	sets a description for the given parameter More...

int	getId () const
	return the id of the configurable objects, which is created by random on initialisation More...

virtual paramkey	getName () const
	return the name of the object More...

virtual paramkey	getRevision () const
	returns the revision of the object More...

virtual void	setName (const paramkey &name, bool callSetNameOfInspectable=true)
	Sets the name of the configurable. More...

virtual void	setRevision (const paramkey &revision)
	sets the revision Hint: { return "$ID$"; } More...

virtual paramval	getParam (const paramkey &key, bool traverseChildren=true) const
	returns the value of the requested parameter or 0 (+ error message to stderr) if unknown. More...

virtual bool	hasParam (const paramkey &key, bool traverseChildren=true) const
	Returns if the requested parameter is part of the configurable or their children. More...

virtual bool	setParam (const paramkey &key, paramval val, bool traverseChildren=true)
	sets the value of the given parameter or does nothing if unknown. More...

virtual void	setParamBounds (const paramkey &key, paramval minBound, paramval maxBound, bool traverseChildren=true)
	Sets the bounds (minBound and maxBound) of the given parameter. More...

virtual void	setParamBounds (const paramkey &key, paramint minBound, paramint maxBound, bool traverseChildren=true)

virtual void	setParamBounds (const paramkey &key, paramvalBounds bounds, bool traverseChildren=true)

virtual void	setParamBounds (const paramkey &key, paramintBounds bounds, bool traverseChildren=true)

virtual paramlist	getParamList () const
	The list of all parameters with there value as allocated lists. More...

virtual std::list< paramkey >	getAllParamNames (bool traverseChildren=true)
	returns all names that are configureable More...

virtual parammap	getParamValMap () const

virtual paramintmap	getParamIntMap () const

virtual paramboolmap	getParamBoolMap () const

virtual paramdescr	getParamDescr (const paramkey &key, bool traverseChildren=true) const
	returns the description for the given parameter More...

virtual paramvalBounds	getParamvalBounds (const paramkey &key, bool traverseChildren=true) const

virtual paramintBounds	getParamintBounds (const paramkey &key, bool traverseChildren=true) const

virtual bool	hasParamDescr (const paramkey &key, bool traverseChildren=true) const

virtual bool	hasParamvalBounds (const paramkey &key, bool traverseChildren=true) const

virtual bool	hasParamintBounds (const paramkey &key, bool traverseChildren=true) const

virtual bool	storeCfg (const char *filenamestem, const std::list< std::string > &comments=std::list< std::string >())
	stores the key values paires into the file : filenamestem.cfg including the comments given in the list More...

virtual bool	restoreCfg (const char *filenamestem)
	restores the key values paires from the file : filenamestem.cfg More...

void	print (FILE f, const char prefix, int columns=90, bool traverseChildren=true) const
	prints the keys, values and descriptions to the file. Each line is prefixed More...

bool	parse (FILE f, const char prefix=0, bool traverseChildren=true)
	parses the configuration from the given file More...

virtual void	addConfigurable (Configurable *conf)
	Adds a configurable as a child object. More...

virtual void	removeConfigurable (Configurable *conf)
	Removes a configurable as a child object. More...

virtual const configurableList &	getConfigurables () const
	Returns the list containing all configurable children. More...

virtual void	configurableChanged ()
	Indicates that the configurable itself or the configurable children attached to this configurable have changed. More...

Public Member Functions inherited from BackCaller
	BackCaller ()

virtual	~BackCaller ()

virtual void	addCallbackable (Callbackable *callbackableInstance, CallbackableType type=BackCaller::DEFAULT_CALLBACKABLE_TYPE)
	Adds a Callbackable instance to this caller instance. More...

virtual void	removeCallbackable (Callbackable *callbackableInstance, CallbackableType type=BackCaller::DEFAULT_CALLBACKABLE_TYPE)
	Removes a Callbackable instance from this caller instance. More...

virtual void	removeAllCallbackables (CallbackableType type)
	Removes all Callbackable instances from this caller instance. More...

virtual void	callBack (CallbackableType type=BackCaller::DEFAULT_CALLBACKABLE_TYPE)
	Calls all registered callbackable classes of the determined type. More...

virtual void	callBackQMP (CallbackableType type=BackCaller::DEFAULT_CALLBACKABLE_TYPE)
	Calls all registered callbackable classes of the determined type. More...

Public Member Functions inherited from Storeable
virtual	~Storeable ()

bool	storeToFile (const char *filename) const
	Provided for convenience. More...

bool	restoreFromFile (const char *filename)
	Provided for convenience. More...

Public Member Functions inherited from Inspectable
	Inspectable (const iparamkey &name="")
	TYPEDEFS END. More...

virtual	~Inspectable ()

virtual iparamkeylist	getInternalParamNames () const
	The list of the names of all internal parameters given by getInternalParams(). More...

virtual iparamvallist	getInternalParams () const

virtual iparamvalptrlist	getInternalParamsPtr () const
	be careful: matrices will be ignored More...

virtual ilayerlist	getStructuralLayers () const
	Specifies which parameter vector forms a structural layer (in terms of a neural network) The ordering is important. More...

virtual iconnectionlist	getStructuralConnections () const
	Specifies which parameter matrix forms a connection between layers (in terms of a neural network) The orderning is not important. More...

virtual void	addInspectableValue (const iparamkey &key, iparamval const *val, const std::string &descr=std::string())
	This is the new style for adding inspectable values. More...

virtual void	addInspectableMatrix (const iparamkey &key, const matrix::Matrix *m, bool only4x4AndDiag=true, const std::string &descr=std::string())
	This is the new style for adding inspectable values. More...

virtual void	addInspectableDescription (const iparamkey &key, const std::string &descr)
	adds a description for the given parameter using info-lines The line will start (appart from the #I) with a D for description followed by the key end then followed by the string. More...

virtual void	addInfoLine (std::string infoLine)
	Adds an info line to this inspectable instance. More...

virtual void	addInfoLines (std::list< std::string > infoLineList)
	Adds a bunch of infolines with addInfoLine to this inspectable instance. More...

virtual void	removeInfoLines ()
	Removes all infolines from this inspectable instance. More...

virtual const infoLinesList &	getInfoLines () const
	Returns all infolines added to this inspectable instance. More...

virtual void	addInspectable (Inspectable *insp)
	Adds an inspectable as a child object. More...

virtual void	removeInspectable (Inspectable *insp)
	Removes an inspectable as a child object. More...

virtual void	setNameOfInspectable (const iparamkey &name)
	set the name of the inspectable More...

virtual const iparamkey	getNameOfInspectable () const
	return the name of the inspectable, getName() would conflict with Configurable::getName() too often More...

virtual const inspectableList &	getInspectables () const
	Returns the list containing all inspectable children. More...

Public Attributes
double	eps
	initial learning rate for weight update More...

Protected Member Functions
void	updateCellSizes ()
	updates the cell sizes More...

Protected Member Functions inherited from Configurable
void	copyParameters (const Configurable &, bool traverseChildren=true)
	copies the internal params of the given configurable More...

void	printdescr (FILE f, const char prefix, const paramkey &key, int columns, int indent) const

Static Protected Member Functions
static double	activationfunction (double rdfsize, double d)
	activation function (rbf) More...

Additional Inherited Members
Public Types inherited from Configurable
typedef std::string	paramkey

typedef std::string	paramdescr

typedef double	paramval

typedef std::list< std::pair < paramkey, paramval > >	paramlist

typedef std::map< paramkey, paramval * >	parammap

typedef bool	parambool

typedef std::list< std::pair < paramkey, parambool > >	paramboollist

typedef std::map< paramkey, parambool * >	paramboolmap

typedef int	paramint

typedef std::list< std::pair < paramkey, paramint > >	paramintlist

typedef std::map< paramkey, paramint * >	paramintmap

typedef std::map< paramkey, paramdescr >	paramdescrmap

typedef std::pair< paramval, paramval >	paramvalBounds

typedef std::map< paramkey, paramvalBounds >	paramvalBoundsMap

typedef std::pair< paramint, paramint >	paramintBounds

typedef std::map< paramkey, paramintBounds >	paramintBoundsMap

typedef std::pair< paramkey, paramval * >	paramvalpair

typedef std::pair< paramkey, parambool * >	paramboolpair

typedef std::pair< paramkey, paramint * >	paramintpair

typedef std::vector < Configurable * >	configurableList

Public Types inherited from BackCaller
typedef unsigned long	CallbackableType

Public Types inherited from Inspectable
typedef std::string	iparamkey

typedef double	iparamval

typedef std::pair< iparamkey, iparamval const * >	iparampair

typedef std::pair< iparamkey, std::pair< const matrix::Matrix *, bool > >	imatrixpair

typedef std::list< iparamkey >	iparamkeylist

typedef std::list< std::string >	infoLinesList

typedef std::list< iparamval >	iparamvallist

typedef std::list< iparamval const * >	iparamvalptrlist

typedef std::list< iparampair >	iparampairlist

typedef std::list< imatrixpair >	imatrixpairlist

typedef struct Inspectable::ILayer	ILayer

typedef struct Inspectable::IConnection	IConnection

typedef std::list< ILayer >	ilayerlist

typedef std::list< IConnection >	iconnectionlist

typedef std::list< const Inspectable * >	inspectableList

Static Public Attributes inherited from Configurable
static const CallbackableType	CALLBACK_CONFIGURABLE_CHANGED = 11

Static Public Attributes inherited from BackCaller
static const CallbackableType	DEFAULT_CALLBACKABLE_TYPE = 0
	This is the default Callbackable type. More...

Protected Attributes inherited from Inspectable
iparamkey	name

iparampairlist	mapOfValues

imatrixpairlist	mapOfMatrices

infoLinesList	infoLineStringList

Detailed Description

neural gas class.

Implementation follows roughly Martinetz scheme. The output of the network is $exp(- |x-w_i|^2/cellsize)$ for each neuron, where cellsize is distance to the second closest neigbour.

Constructor & Destructor Documentation

NeuralGas	(	const std::string &	name = `"NeuralGas"`,
		const std::string &	revision = `"$Id$"`
	)

NeuralGas	(	double	lambda,
		double	eps,
		int	maxTime,
		const std::string &	name = `"NeuralGas"`,
		const std::string &	revision = `"$Id$"`
	)

create a som

Parameters

lambda	initial competetive constant for neighborhood learning
eps	initial learning rate
maxTime	maximal time we expect the network to learn, if 0 no annealing is performed

virtual ~NeuralGas ( )

inlinevirtual

Member Function Documentation

double activationfunction	(	double	rdfsize,
		double	d
	)

staticprotected

activation function (rbf)

virtual void damp ( double damping )

inlinevirtual

damps the weights and the biases by multiplying (1-damping)

Implements AbstractModel.

virtual unsigned int getInputDim ( ) const

inlinevirtual

returns the number of input neurons

Implements AbstractModel.

virtual unsigned int getOutputDim ( ) const

inlinevirtual

returns the number of output neurons

Implements AbstractModel.

void init	(	unsigned int	inputDim,
		unsigned int	outputDim,
		double	unit_map = `0.0`,
		RandGen *	randGen = `0`
	)

virtual

initialised som

Parameters

inputDim	dimension of input vector
outputDim	number of outputneurons
unit_map	interval for randomly choosen weights. if zero then (-1,1) is used otherwise (-unit_map, unit_map) (in all dimensions)

Implements AbstractModel.

const Matrix learn	(	const matrix::Matrix &	input,
		const matrix::Matrix &	nom_output,
		double	learnRateFactor = `1`
	)

virtual

Implements AbstractModel.

void printCellsizes ( FILE * f ) const

virtual

void printWeights ( FILE * f ) const

virtual

const Matrix process ( const matrix::Matrix & input )

virtual

passive processing of the input (this function is not constant since a recurrent network for example might change internal states

Implements AbstractModel.

bool restore ( FILE * f )

virtual

loads the object from the given file stream (ASCII preferred).

Implements Storeable.

bool store ( FILE * f ) const

virtual

stores the object to the given file stream (ASCII preferred).

Implements Storeable.

void updateCellSizes ( )

protected

updates the cell sizes

Member Data Documentation

double eps

initial learning rate for weight update

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

Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation