com.ibm.able.data
Class AbleFuzzySetPi

java.lang.Object
  com.ibm.able.data.AbleLiteral
      com.ibm.able.data.AbleFuzzySet
          com.ibm.able.data.AbleFuzzySetPi

All Implemented Interfaces:

AbleRd, java.io.Serializable

public class AbleFuzzySetPi

extends AbleFuzzySet

implements java.io.Serializable

This class defines the Able data PI fuzzy set. A pi set is a bell-shaped curve useful for representing fuzzy numbers. The membership value becomes zero at a discrete point.

See Also:

Serialized Form

Field Summary

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

AbleFuzzySetPi(AbleFuzzyVariable theParentVar, java.lang.String theName, double theAlphaCut, double thePtCenter, double theWidth)
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, 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

AbleFuzzySetPi

public AbleFuzzySetPi(AbleFuzzyVariable theParentVar,
                      java.lang.String theName,
                      double theAlphaCut,
                      double thePtCenter,
                      double theWidth)

Create a new fuzzy set.

Parameters:

theParentVar - A reference to the fuzzy variable that contains this fuzzy set.

theName - 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.

theWidth - The distance from the center point to the curve's end point at the 0.0 truth value.

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.