The SigmoidDifference class is an extended Term that represents the difference between two sigmoidal membership functions. More...

#include <SigmoidDifference.h>

Inheritance diagram for fl::SigmoidDifference:

Collaboration diagram for fl::SigmoidDifference:

Public Member Functions
	SigmoidDifference (const std::string &name="", scalar left=fl::nan, scalar rising=fl::nan, scalar falling=fl::nan, scalar right=fl::nan, scalar height=1.0)

virtual	~SigmoidDifference () FL_IOVERRIDE

virtual std::string	className () const FL_IOVERRIDE
	Returns the name of the class of the term. More...

virtual std::string	parameters () const FL_IOVERRIDE
	Returns the parameters of the term. More...

virtual void	configure (const std::string &parameters) FL_IOVERRIDE
	Configures the term with the parameters. More...

virtual Complexity	complexity () const FL_IOVERRIDE
	Computes the estimated complexity of evaluating the membership function. More...

virtual scalar	membership (scalar x) const FL_IOVERRIDE
	Computes the membership function evaluated at \(x\). More...

virtual void	setLeft (scalar leftInflection)
	Sets the inflection of the left sigmoidal curve. More...

virtual scalar	getLeft () const
	Gets the inflection of the left sigmoidal curve. More...

virtual void	setRising (scalar risingSlope)
	Sets the slope of the left sigmoidal curve. More...

virtual scalar	getRising () const
	Gets the slope of the left sigmoidal curve. More...

virtual void	setFalling (scalar fallingSlope)
	Sets the slope of the right sigmoidal curve. More...

virtual scalar	getFalling () const
	Gets the slope of the right sigmoidal curve. More...

virtual void	setRight (scalar rightInflection)
	Sets the inflection of the right sigmoidal curve. More...

virtual scalar	getRight () const
	Gets the inflection of the right sigmoidal curve. More...

virtual SigmoidDifference *	clone () const FL_IOVERRIDE
	Creates a clone of the term. More...

Public Member Functions inherited from fl::Term
	Term (const std::string &name="", scalar height=1.0)

virtual	~Term ()

virtual void	setName (const std::string &name)
	Sets the name of the term. More...

virtual std::string	getName () const
	Gets the name of the term. More...

virtual void	setHeight (scalar height)
	Sets the height of the term. More...

virtual scalar	getHeight () const
	Gets the height of the term. More...

virtual std::string	toString () const
	Returns the representation of the term in the FuzzyLite Language. More...

virtual void	updateReference (const Engine *engine)
	Updates the references (if any) to point to the current engine (useful when cloning engines or creating terms within Importer objects. More...

Static Public Member Functions
static Term *	constructor ()

Additional Inherited Members
Protected Attributes inherited from fl::Term
scalar	_height

Detailed Description

The SigmoidDifference class is an extended Term that represents the difference between two sigmoidal membership functions.

Author: Juan Rada-Vilela, Ph.D.

See also: Term; Variable

Since: 4.0

Definition at line 35 of file SigmoidDifference.h.

Constructor & Destructor Documentation

◆ SigmoidDifference()

fl::SigmoidDifference::SigmoidDifference	(	const std::string &	name = `""`,
		scalar	left = `fl::nan`,
		scalar	rising = `fl::nan`,
		scalar	falling = `fl::nan`,
		scalar	right = `fl::nan`,
		scalar	height = `1.0`
	)

explicit

◆ ~SigmoidDifference()

virtual fl::SigmoidDifference::~SigmoidDifference ( )

virtual

Member Function Documentation

◆ className()

virtual std::string fl::SigmoidDifference::className ( ) const

virtual

Returns the name of the class of the term.

Returns: the name of the class of the term

Implements fl::Term.

◆ clone()

virtual SigmoidDifference* fl::SigmoidDifference::clone ( ) const

virtual

Creates a clone of the term.

Returns: a clone of the term

Implements fl::Term.

◆ complexity()

virtual Complexity fl::SigmoidDifference::complexity ( ) const

virtual

Computes the estimated complexity of evaluating the membership function.

Returns: the estimated complexity of evaluating the membership function

Implements fl::Term.

◆ configure()

virtual void fl::SigmoidDifference::configure ( const std::string & parameters )

virtual

Configures the term with the parameters.

Parameters

parameters as "left rising falling right [height]"

Implements fl::Term.

◆ constructor()

static Term* fl::SigmoidDifference::constructor ( )

static

◆ getFalling()

virtual scalar fl::SigmoidDifference::getFalling ( ) const

virtual

Gets the slope of the right sigmoidal curve.

Returns: the slope of the right sigmoidal curve

◆ getLeft()

virtual scalar fl::SigmoidDifference::getLeft ( ) const

virtual

Gets the inflection of the left sigmoidal curve.

Returns: the inflection of the left sigmoidal curve

◆ getRight()

virtual scalar fl::SigmoidDifference::getRight ( ) const

virtual

Gets the inflection of the right sigmoidal curve.

Returns: the inflection of the right sigmoidal curve

◆ getRising()

virtual scalar fl::SigmoidDifference::getRising ( ) const

virtual

Gets the slope of the left sigmoidal curve.

Returns: the slope of the left sigmoidal curve

◆ membership()

virtual scalar fl::SigmoidDifference::membership ( scalar x ) const

virtual

Computes the membership function evaluated at \(x\).

Parameters

x

Returns: \( h (a-b)\)

where \(h\) is the height of the Term, \(a= 1 / (1 + \exp(-s_l \times (x - i_l))) \), \(b = 1 / (1 + \exp(-s_r \times (x - i_r)))\), \(i_l\) is the left inflection of the SigmoidDifference, \(s_l\) is the left slope of the SigmoidDifference, \(i_r\) is the right inflection of the SigmoidDifference, \(s_r\) is the right slope of the SigmoidDifference

Implements fl::Term.

◆ parameters()

virtual std::string fl::SigmoidDifference::parameters ( ) const

virtual

Returns the parameters of the term.

Returns: "left rising falling right [height]"

Implements fl::Term.

◆ setFalling()

virtual void fl::SigmoidDifference::setFalling ( scalar fallingSlope )

virtual

Sets the slope of the right sigmoidal curve.

Parameters

fallingSlope is the slope of the right sigmoidal curve

◆ setLeft()

virtual void fl::SigmoidDifference::setLeft ( scalar leftInflection )

virtual

Sets the inflection of the left sigmoidal curve.

Parameters

leftInflection is the inflection of the left sigmoidal curve

◆ setRight()

virtual void fl::SigmoidDifference::setRight ( scalar rightInflection )

virtual

Sets the inflection of the right sigmoidal curve.

Parameters

rightInflection is the inflection of the right sigmoidal curve

◆ setRising()

virtual void fl::SigmoidDifference::setRising ( scalar risingSlope )

virtual

Sets the slope of the left sigmoidal curve.

Parameters

risingSlope is the slope of the left sigmoidal curve

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

fuzzylite/fl/term/SigmoidDifference.h

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SigmoidDifference()

◆ ~SigmoidDifference()

Member Function Documentation

◆ className()

◆ clone()

◆ complexity()

◆ configure()

◆ constructor()

◆ getFalling()

◆ getLeft()

◆ getRight()

◆ getRising()

◆ membership()

◆ parameters()

◆ setFalling()

◆ setLeft()

◆ setRight()

◆ setRising()