LinguisticVariable Class Reference

A composite of linguistic terms. More...

#include <LinguisticVariable.h>

Inheritance diagram for LinguisticVariable:

List of all members.

Public Member Functions
	LinguisticVariable (const std::string name="", double lowerBound=-std::numeric_limits< double >::max(), double upperBound=std::numeric_limits< double >::max())
	The constructor sets the name and the range for the new linguistic variable, e.g.
virtual	~LinguisticVariable ()
	Destructor.
std::string	getName () const
	Returns the name of the linguistic variable.
void	setName (const std::string name)
	Sets the name of the linguistic variable.
void	addTerm (LinguisticTerm *lt)
	Adds a new linguistic term.
void	removeTerm (LinguisticTerm *lt)
	Removes the given LinguisticTerm from this variable.
int	getNumberOfTerms ()
	Returns number of terms associated with the LinguisticVariable.
const RCPtr< LinguisticTerm >	getTerm (int whichOne)
	Returns a LinguisticTerm associated with this variable.
void	setBounds (double lower, double upper)
	Sets a new range for the variable.
double	getLowerBound ()
	Returns the lower bound of the variables range.
double	getUpperBound ()
	Returns the upper bound of the variables range.
const RCPtr< LinguisticTerm >	findLT (std::string name)
	Returns an LinguisticTerm object specified by its name.
Static Public Member Functions
static LinguisticVariable *	getLV (std::string name)
	Returns the linguistic variable for the given name if existent or throws FuzzyException otherwise.

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Detailed Description

A composite of linguistic terms.

A linguistic variable combines linguistic terms like 'slow', 'moderately fast', 'fast', 'unbelievable fast' under a new name, e.g. 'speed'.

Definition at line 36 of file LinguisticVariable.h.

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Constructor & Destructor Documentation

LinguisticVariable::LinguisticVariable	(	const std::string	name = "",
		double	lowerBound = -std::numeric_limits<double>::max(),
		double	upperBound = std::numeric_limits<double>::max()
	)

The constructor sets the name and the range for the new linguistic variable, e.g.

( "Temperature", -10, 120 ).

The bounds also hold for the support of all derived fuzzy sets, i.e. regions outside these bounds are ignored for defuzzyfication.

Parameters:

	name	the variables name, e.g. "Temperature"
	lowerBound	lower bound of the variables range
	upperBound	upper bound of the variables range

Definition at line 45 of file LinguisticVariable.cpp.

LinguisticVariable::~LinguisticVariable

(

)

[virtual]

Destructor.

Definition at line 37 of file LinguisticVariable.cpp.

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Member Function Documentation

void LinguisticVariable::addTerm

(

LinguisticTerm *

lt

)

Adds a new linguistic term.

This method shouldn't be necessary most of time, since a LinguisticTerm is associated with its LinguisticVariable durin construction.

Parameters:

lt

the LinguisticTerm to add

Definition at line 64 of file LinguisticVariable.cpp.

const RCPtr< LinguisticTerm > LinguisticVariable::findLT

(

std::string

name

)

Returns an LinguisticTerm object specified by its name.

Parameters:

name

the name of the designated LinguisticTerm

Definition at line 92 of file LinguisticVariable.cpp.

Referenced by Rule::Rule().

double LinguisticVariable::getLowerBound

(

)

[inline]

Returns the lower bound of the variables range.

Definition at line 105 of file LinguisticVariable.h.

LinguisticVariable * LinguisticVariable::getLV

(

std::string

name

)

[static]

Returns the linguistic variable for the given name if existent or throws FuzzyException otherwise.

Definition at line 28 of file LinguisticVariable.cpp.

Referenced by Rule::Rule().

std::string LinguisticVariable::getName

(

)

const

Returns the name of the linguistic variable.

Definition at line 51 of file LinguisticVariable.cpp.

int LinguisticVariable::getNumberOfTerms

(

)

[inline]

Returns number of terms associated with the LinguisticVariable.

Definition at line 84 of file LinguisticVariable.h.

Referenced by getTerm().

const RCPtr< LinguisticTerm > LinguisticVariable::getTerm

(

int

whichOne

)

Returns a LinguisticTerm associated with this variable.

Parameters:

whichOne

index of the term ( 0 <= index < numerOfTerms )

Definition at line 79 of file LinguisticVariable.cpp.

References getNumberOfTerms().

double LinguisticVariable::getUpperBound

(

)

[inline]

Returns the upper bound of the variables range.

Definition at line 110 of file LinguisticVariable.h.

void LinguisticVariable::removeTerm

(

LinguisticTerm *

lt

)

Removes the given LinguisticTerm from this variable.

Parameters:

lt

the LinguisticTerm to remove

Definition at line 69 of file LinguisticVariable.cpp.

void LinguisticVariable::setBounds	(	double	lower,
		double	upper
	)

Sets a new range for the variable.

The bounds also hold for the support of all derived fuzzy sets.

Parameters:

	lower	the lower bound
	upper	the upper bound

Definition at line 59 of file LinguisticVariable.cpp.

void LinguisticVariable::setName

(

const std::string

name

)

Sets the name of the linguistic variable.

Parameters:

name

the new name

Definition at line 55 of file LinguisticVariable.cpp.

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

• LinguisticVariable.h
• LinguisticVariable.cpp