ABLE 2.0.0 07/02/2003 10:25:01

com.ibm.able.data
Class AbleFuzzySetBeta

java.lang.Object
  |
  +--com.ibm.able.data.AbleLiteral
        |
        +--com.ibm.able.data.AbleFuzzySet
              |
              +--com.ibm.able.data.AbleFuzzySetBeta
All Implemented Interfaces:
AbleRd, java.io.Serializable

public class AbleFuzzySetBeta
extends AbleFuzzySet
implements java.io.Serializable

This class defines the Able data beta fuzzy set. A beta set is a bell-shaped curve useful for representing fuzzy numbers. It is more tightly compacted than the PI curve and the membership function goes to zero only at extremely large widths.

See Also:
Serialized Form

Fields inherited from class com.ibm.able.data.AbleFuzzySet
AlphaCutDefault, AlphaCutStrong, AlphaCutWeak, CorrelationMethodDefault, CorrelationMethodMinimise, CorrelationMethodProduct, DefuzzifyMethodAverageHeight, DefuzzifyMethodCentroid, DefuzzifyMethodDefault, DefuzzifyMethodMaxHeight, FUZZY_ADD, FuzzyInferenceMethodDefault, HedgeAbout, HedgeAbove, HedgeBelow, HedgeCloseTo, HedgeExtremely, HedgeGenerally, HedgeInVicinityOf, HedgeNot, HedgeNull, HedgePositively, HedgeSlightly, HedgeSomewhat, HedgeVery, MaxValues, MIN_MAX, myAlphaCut, myComplementFlag, myComplementName, myDomainHi, myDomainLo, myFlexFactor, myNumberOfValues, myParentVar, myPtBeg, myPtCenter, myPtEnd, myPtFlex, myPtLeft, myPtLeftCore, myPtRight, myPtRightCore, myScalarVecSav, mySetDir, mySetName, mySetType, myTruthVecSav, myTruthVector, myWeight, myWidth, PRODUCT_OR, SetDirectionDown, SetDirectionLeft, SetDirectionRight, SetDirectionUp, SetTypeBeta, SetTypeGaussian, SetTypeLinear, SetTypePi, SetTypeSegments, SetTypeShoulder, SetTypeSigmoid, SetTypeTrapezoid, SetTypeTriangle, SetTypeWork
 
Constructor Summary
AbleFuzzySetBeta(AbleFuzzyVariable theParentVar, java.lang.String theSetName, double theAlphaCut, double thePtCenter, double theFlexFactor)
          Create a new fuzzy set.
AbleFuzzySetBeta(AbleFuzzyVariable theParentVar, java.lang.String theSetName, double theAlphaCut, double thePtCenter, double theFlexFactor, double theWeight)
          Create a new fuzzy set.
 
Method Summary
 java.lang.String arlString()
          Return a formal rule language string representation of this fuzzy set.
 java.lang.String toString()
          Retrieve a string describing (the contents of) the object.
 java.lang.String xmlString()
          Return a formal XML string representation of this fuzzy set.
 
Methods inherited from class com.ibm.able.data.AbleFuzzySet
arlCRdString, Copyright, CorrelationMethod, CorrelationMethodRl, CorrelationMethodXml, DefuzzifyMethod, DefuzzifyMethodRl, DefuzzifyMethodXml, FuzzyInferenceMethod, FuzzyInferenceMethodRl, FuzzyInferenceMethodXml, getAlphaCut, getBooleanValue, getDataType, getDataTypeClass, getDataTypeClassName, getDomainHi, getDomainLo, getFlexFactor, getFuzzyValue, getGenericValue, getNumberOfValues, getNumericValue, getPtBeg, getPtCenter, getPtEnd, getPtFlex, getPtLeft, getPtLeftCore, getPtRight, getPtRightCore, getReferent, getScalarVector, getSetDir, getSetName, getSetProperties, getSetType, getStringValue, getTruthValues, getTruthVector, getValue, getWeight, getWidth, Hedge, HedgeRl, HedgeXml, setAlphaCut, SetDirection, SetDirectionRl, SetDirectionXml, SetType, SetTypeRl, SetTypeXml, traceString, xmlCRdString
 
Methods inherited from class com.ibm.able.data.AbleLiteral
bitwiseAND, bitwiseNOT, bitwiseOR, bitwiseShiftLeft, bitwiseShiftRight, bitwiseShiftRightZeroFill, bitwiseXOR, cmpEq, cmpGt, cmpGtEq, cmpIs, cmpLt, cmpLtEq, cmpNeq, compDivide, compMinus, compModulo, compMultiply, compPlus, compUnaryMinus, getDataTypeAsString, getReferents, getTemplateString, isConstant, logicalAND, logicalNOT, logicalOR
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

AbleFuzzySetBeta

public AbleFuzzySetBeta(AbleFuzzyVariable theParentVar,
                        java.lang.String theSetName,
                        double theAlphaCut,
                        double thePtCenter,
                        double theFlexFactor,
                        double theWeight)
Create a new fuzzy set.
Parameters:
theParentVar - A reference to the fuzzy variable that contains this fuzzy set.

theSetName - The name of this fuzzy set.

theAlphaCut - The low cut-off value for this fuzzy set.

thePtCenter - The point around which the curve is centered.

theFlexFactor - The distance from the center point to the curve's inflexion point at the 0.5 truth value; the width.

theWeight - A number to attenuate the shape of the curve. 1.0 produces an unattenuated curve.


AbleFuzzySetBeta

public AbleFuzzySetBeta(AbleFuzzyVariable theParentVar,
                        java.lang.String theSetName,
                        double theAlphaCut,
                        double thePtCenter,
                        double theFlexFactor)
Create a new fuzzy set.
Parameters:
theParentVar - A reference to the fuzzy variable that contains this fuzzy set.

theSetName - The name of this fuzzy set.

theAlphaCut - The low cut-off value for this fuzzy set.

thePtCenter - The point around which the curve is centered.

theFlexFactor - The distance from the center point to the curve's inflexion point at the 0.5 truth value; the width.

Method Detail

arlString

public java.lang.String arlString()
Return a formal rule language string representation of this fuzzy set.
Returns:
A String describing the object in rule language.

xmlString

public java.lang.String xmlString()
Return a formal XML string representation of this fuzzy set.
Returns:
A String describing the object in XML.

toString

public java.lang.String toString()
Retrieve a string describing (the contents of) the object.
Overrides:
toString in class AbleFuzzySet
Returns:
A String containing the current contents of the object.

ABLE 2.0.0 07/02/2003 10:25:01

(C) Copyright IBM Corporation 1999, 2003