jfml.membershipfunction

Class TrapezoidMembershipFunction

java.lang.Object

jfml.membershipfunction.MembershipFunction

jfml.membershipfunction.TrapezoidMembershipFunction

public class TrapezoidMembershipFunction
extends MembershipFunction

Java class for representing Trapezoid functions

Author:

sotillo19

Constructor Summary

Constructors

Constructor and Description
TrapezoidMembershipFunction() Default constructor
TrapezoidMembershipFunction(Parameter p) Constructor with Parameter instance with the parameters of the function
TrapezoidMembershipFunction(Parameter p, float domainLeft, float domainRight) Constructor with Parameter instance with the parameters of the function

Method Summary

Modifier and Type	Method and Description
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

TrapezoidMembershipFunction

public TrapezoidMembershipFunction()

Default constructor

TrapezoidMembershipFunction

public TrapezoidMembershipFunction(Parameter p)

Constructor with Parameter instance with the parameters of the function

Parameters:

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

TrapezoidMembershipFunction

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

Constructor with Parameter instance with the parameters of the function

Parameters:

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

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

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