IRIS::Fuzzy::ZMF

IRIS::Fuzzy::ZMF Class Reference

(Standard) spline-based, Z-shaped membership function More...

#include <ZMF.h>

Inheritance diagram for IRIS::Fuzzy::ZMF:

[legend]Collaboration diagram for IRIS::Fuzzy::ZMF:


Public Types
typedef pair< double, double >	interval
typedef std::vector< double >	parm_list
	type for list of parameters
typedef vector< double >	vector
	type for the vectorized form of this member function
Public Member Functions
	ZMF (double a=0, double b=0)
	ZMF (const string &name, double a=0, double b=0, double min=0, double max=0)
	ZMF (const MembershipFn::parm_list &parm)
	~ZMF ()
	destroy a membership function by releasing unneeded memory
void	set (double a=0, double b=0)
virtual void	discretize (unsigned degree)
void	get (double &a, double &b)
virtual double	eval (double x) const
virtual double	operator() (double val) const
virtual void	draw () const
void	set (const string &name, double min, double max)
void	set (unsigned i, double val)
void	set (const string &name)
void	setMin (double newMin)
void	setMax (double newMax)
void	clear ()
	clears out a membership function
void	get (string &name, double &min, double &max) const
void	get (double &min, double &max) const
interval	get () const
	get the range of this set, described as an interval
double	get (unsigned i)
	gets the value of the ith parameter
void	get (string &name) const
double	getMin () const
	get the lower bound of the range of this set
double	getMax () const
	get the upper bound of the range of this set
interval	dom () const
double &	operator[] (unsigned i)
	sets the ith item in the vector of the member function
double	operator[] (unsigned i) const
	gets the ith item in the vector of the member function
vector	getVector () const
void	setName (const string &name)
string	getName () const
	get the name of this set
Static Public Attributes
static const unsigned	NUM_PARMS = 2
	Z-shaped membership functions need two parameters.
Protected Attributes
interval	range
parm_list	parameter
vector	x
string	name

Detailed Description

(Standard) spline-based, Z-shaped membership function

Member Typedef Documentation

typedef pair<double,double> IRIS::Fuzzy::MembershipFn::interval [inherited]

describe an interval as a pair indicating a lower bound and an upper bound

typedef std::vector<double> IRIS::Fuzzy::MembershipFn::parm_list [inherited]

type for list of parameters

typedef vector<double> IRIS::Fuzzy::Numeric::vector [inherited]

type for the vectorized form of this member function

Constructor & Destructor Documentation

IRIS::Fuzzy::ZMF::ZMF ( double a = 0,

double b = 0

)

create a Z-shaped membership function based on the given parameters a and b; default is a "zero" Z-shaped membership function
Parameters:

a last, rightmost "1" value

b first, leftmost "0" value

IRIS::Fuzzy::ZMF::ZMF ( const string & name,

double a = 0,

double b = 0,

double min = 0,

double max = 0

)

create a Z-shaped membership function by naming it, setting parameters, and setting lower- and upper-bounds on its domain of values
Parameters:

name name to give this membership function

a last, rightmost "1" value

b first, leftmost "0" value

min lower bound for domain

max upper bound for domain

IRIS::Fuzzy::ZMF::ZMF ( const MembershipFn::parm_list & parm )

create a Z-shaped membership function based on the given parameter list (with two parameters)

IRIS::Fuzzy::ZMF::~ZMF ( )

destroy a membership function by releasing unneeded memory

Member Function Documentation

void IRIS::Fuzzy::MembershipFn::clear ( ) [inherited]

clears out a membership function

Reimplemented from IRIS::Fuzzy::Numeric.

void IRIS::Fuzzy::ZMF::discretize ( unsigned degree ) [virtual]

Domain range is stored in range (see Set.h)
Figure out step size for x values given the degree of discretization and the range of values in the domain
Implements IRIS::Fuzzy::MembershipFn.

MembershipFn::interval IRIS::Fuzzy::MembershipFn::dom ( ) const [inherited]

get the domain of this set; same as get()
See also:
get()

void IRIS::Fuzzy::ZMF::draw ( ) const [virtual]

draw this set to see what it looks like; included primarily for debugging purposes ...
Reimplemented from IRIS::Fuzzy::MembershipFn.

double IRIS::Fuzzy::ZMF::eval ( double x ) const [virtual]

evaluate a membership function based on the given x
Parameters:

x element of domain of membership function

Implements IRIS::Fuzzy::MembershipFn.

void IRIS::Fuzzy::Set::get ( string & name ) const [inherited]

get the name of this set; same as getName()
Parameters:

name name given this set

See also:
getName()

double IRIS::Fuzzy::MembershipFn::get ( unsigned i ) [inherited]

gets the value of the ith parameter

MembershipFn::interval IRIS::Fuzzy::MembershipFn::get ( ) const [inherited]

get the range of this set, described as an interval

void IRIS::Fuzzy::MembershipFn::get ( double & min,

double & max

) const [inherited]

get the range for this set
Parameters:

min lower bound for range

max upper bound for range

void IRIS::Fuzzy::MembershipFn::get ( string & name,

double & min,

double & max

) const [inherited]

get the name and range for this set
Parameters:

name name given to this set

min lower bound for range

max upper bound for range

void IRIS::Fuzzy::ZMF::get ( double & a,

double & b

)

gets the value of all two parameters
Parameters:

a last, rightmost "1" value

b first, leftmost "0" value

double IRIS::Fuzzy::MembershipFn::getMax ( ) const [inherited]

get the upper bound of the range of this set

double IRIS::Fuzzy::MembershipFn::getMin ( ) const [inherited]

get the lower bound of the range of this set

string IRIS::Fuzzy::Set::getName ( ) const [inherited]

get the name of this set

Numeric::vector IRIS::Fuzzy::Numeric::getVector ( ) const [inherited]

gets the vectorized form of a membership function based on the set level of discretization

double IRIS::Fuzzy::ZMF::operator() ( double val ) const [virtual]

evaluate membership of the given value in this set
Parameters:

val value to use when evaluating this set

Implements IRIS::Fuzzy::MembershipFn.

double IRIS::Fuzzy::Numeric::operator[] ( unsigned i ) const [inherited]

gets the ith item in the vector of the member function

double & IRIS::Fuzzy::Numeric::operator[] ( unsigned i ) [inherited]

sets the ith item in the vector of the member function

void IRIS::Fuzzy::Set::set ( const string & name ) [inherited]

set the name for this set; same as setName()
Parameters:

name name to give this set

See also:
setName()

void IRIS::Fuzzy::MembershipFn::set ( unsigned i,

double val

) [inherited]

sets the ith parameter for this member function to val
Parameters:

i parameter number: based on type of membership function

val new value of ith parameter

void IRIS::Fuzzy::MembershipFn::set ( const string & name,

double min,

double max

) [inherited]

set the name and range for this set
Parameters:

name name to give this set

min lower bound for range

max upper bound for range

void IRIS::Fuzzy::ZMF::set ( double a = 0,

double b = 0

)

sets the two parameters of this member function to a and b
Parameters:

a last, rightmost "1" value

b first, leftmost "0" value

Reimplemented from IRIS::Fuzzy::MembershipFn.

void IRIS::Fuzzy::MembershipFn::setMax ( double newMax ) [inherited]

set the upper bound for the range for this set
Parameters:

newMax new upper bound for range

void IRIS::Fuzzy::MembershipFn::setMin ( double newMin ) [inherited]

set the lower bound for the range for this set
Parameters:

newMin new lower bound for range