net.sourceforge.jFuzzyLogic.membership
Class MembershipFunction

java.lang.Object
  net.sourceforge.jFuzzyLogic.membership.MembershipFunction

Direct Known Subclasses:

MembershipFunctionContinuous, MembershipFunctionDiscrete

public abstract class MembershipFunction
extends java.lang.Object

Base membership function

Author:

pcingola@users.sourceforge.net

Field Summary

(package private) boolean	discrete
(package private) double[]	parameters Function's parameters
(package private) double	universeMax Universe max (range max)
(package private) double	universeMin Universe min (range min)

Constructor Summary

MembershipFunction()
Constructor

Method Summary

abstract org.jfree.chart.JFreeChart	chart(java.lang.String title, boolean showIt) Create a membership function chart
abstract boolean	checkParamters(java.lang.StringBuffer errors)
abstract void	estimateUniverse() Try to guess the universe (if not setted)
java.lang.String	getName() Short name
double	getParameter(int i)
int	getParametersLength()
double	getUniverseMax()
double	getUniverseMin()
boolean	isDiscrete()
abstract double	membership(double in) Get membership function's value.
void	setDiscrete(boolean discrete)
void	setParameter(int i, double value)
void	setUniverseMax(double universeMax)
void	setUniverseMin(double universeMin)
java.lang.String	toString()
abstract java.lang.String	toStringFCL()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

discrete

boolean discrete

parameters

double[] parameters

Function's parameters

universeMax

double universeMax

Universe max (range max)

universeMin

double universeMin

Universe min (range min)

Constructor Detail

MembershipFunction

MembershipFunction()

Constructor

Method Detail

chart

public abstract org.jfree.chart.JFreeChart chart(java.lang.String title,
                                                 boolean showIt)

Create a membership function chart

Parameters:

title - : Title to show (if null => show membership function name)

showIt - : If true, plot is displayed

checkParamters

public abstract boolean checkParamters(java.lang.StringBuffer errors)

estimateUniverse

public abstract void estimateUniverse()

Try to guess the universe (if not setted)

getName

public java.lang.String getName()

Short name

getParameter

public double getParameter(int i)

getParametersLength

public int getParametersLength()

getUniverseMax

public double getUniverseMax()

getUniverseMin

public double getUniverseMin()

isDiscrete

public boolean isDiscrete()

membership

public abstract double membership(double in)

Get membership function's value.

Parameters:

in - : Variable's 'x' value Note: Output mu be in range [0,1]

setDiscrete

public void setDiscrete(boolean discrete)

setParameter

public void setParameter(int i,
                         double value)

setUniverseMax

public void setUniverseMax(double universeMax)

setUniverseMin

public void setUniverseMin(double universeMin)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toStringFCL

public abstract java.lang.String toStringFCL()