jfml.membershipfunction

Class LeftLinearMembershipFunction

java.lang.Object

jfml.membershipfunction.MembershipFunction

jfml.membershipfunction.LeftLinearMembershipFunction

All Implemented Interfaces:

Monotonical

public class LeftLinearMembershipFunction
extends MembershipFunction
implements Monotonical

Java class for representing LeftLinear membership functions

Author:

sotillo19

Constructor Summary

Constructors

Constructor and Description
LeftLinearMembershipFunction() Default constructor
LeftLinearMembershipFunction(Parameter p) Constructor with Parameter instance with parameters of the function
LeftLinearMembershipFunction(Parameter p, float domainLeft, float domainRight) Constructor with Parameter instance with parameters of the function and the left and right domain

Method Summary

Modifier and Type	Method and Description
float	getFi(float y) This function returns the inverse value.
float	getMembershipDegree(float x) Get membership degree value.
java.util.ArrayList<java.lang.Float>	getXValuesDefuzzifier() This function returns an array with values [x1, x2, x3, ...] which represents points in the x domain of the function needed by defuzzifer
java.lang.String	toString()

Methods inherited from class jfml.membershipfunction.MembershipFunction

getDomainLeft, getDomainRight, getName, getParameter, setDomainLeft, setDomainRight, setParameter

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LeftLinearMembershipFunction

public LeftLinearMembershipFunction()

Default constructor

LeftLinearMembershipFunction

public LeftLinearMembershipFunction(Parameter p)

Constructor with Parameter instance with parameters of the function

Parameters:

p - parameter -> a and b. Parameters a and b must satisfy a<=b

LeftLinearMembershipFunction

public LeftLinearMembershipFunction(Parameter p,
                                    float domainLeft,
                                    float domainRight)

Constructor with Parameter instance with parameters of the function and the left and right domain

Parameters:

p - parameter -> a and b. a

domainLeft - left domain

domainRight - right domain

Method Detail

getMembershipDegree

public float getMembershipDegree(float x)

Description copied from class: MembershipFunction

Get membership degree value.

Specified by:

getMembershipDegree in class MembershipFunction

Parameters:

x - : Variable's 'x' value

Returns:

Note: Output must be in range [0,1]

toString

public java.lang.String toString()

Specified by:

toString in class MembershipFunction

getFi

public float getFi(float y)

Description copied from interface: Monotonical

This function returns the inverse value. Given y, return x where f(x)=y

Specified by:

getFi in interface Monotonical

Returns:

getXValuesDefuzzifier

public java.util.ArrayList<java.lang.Float> getXValuesDefuzzifier()

Description copied from class: MembershipFunction

This function returns an array with values [x1, x2, x3, ...] which represents points in the x domain of the function needed by defuzzifer

Specified by:

getXValuesDefuzzifier in class MembershipFunction

Returns:

an ArrayList with floats