infosapient.hdg
Class FzyHedge

java.lang.Object
  |
  +--infosapient.system.ObservableImpl
        |
        +--infosapient.system.FzySystemComponent
              |
              +--infosapient.hdg.FzyHedge

Direct Known Subclasses:

FzyHdgABOUT, FzyHdgABOVE, FzyHdgAFTER, FzyHdgAROUND, FzyHdgBEFORE, FzyHdgBELOW, FzyHdgCLOSE, FzyHdgCOMPLEMENT, FzyHdgDECLINE, FzyHdgDECREASE, FzyHdgDEFINITELY, FzyHdgEXTREMELY, FzyHdgGENERALLY, FzyHdgINCREASE, FzyHdgMOSTLY, FzyHdgMUST, FzyHdgNEAR, FzyHdgNEGATIVE, FzyHdgNEGATIVELY, FzyHdgNOT, FzyHdgPOSITIVE, FzyHdgPOSITIVELY, FzyHdgROUGHLY, FzyHdgSHOULD, FzyHdgSLIGHTLY, FzyHdgSOMEWHAT, FzyHdgVERY, FzyHdgVICINITY

public abstract class FzyHedge

extends FzySystemComponent

implements java.lang.Cloneable, XMLOutput

Class FzyHedge are fuzzy set quantifiers. Fuzzy set quantifiers implement individual algorithms that change the surface of the set to implement a new membership function. This modifier is called a hedge.

Examples would be:

• if Height is very tall then Weight is heavy.
• if Costs are somewhat low then ProductRisk is somewhat high.

The words

• generally
• greatly
• somewhat
are termed 'hedges' as they modify the fuzzy set surface.

Version:

$Revision: 1.1.1.1 $

See Also:

Serialized Form

Field Summary

static double	ABOUT_EXP The exponent for ABOUT hedge.
static double	AROUND_EXP The exponent for AROUND hedge.
static double	CLOSE_EXP The exponent for CLOSE hedge.
private static java.lang.StringBuffer	CN
static double	DEFINITELY_EXP The exponent for DEFINITELY hedge.
static double	EXTREMELY_EXP The exponent for EXTREMELY_EXP hedge.
static double	INC_DEC_FACTOR The amount that is added or subtracted for increase or decrease hedges.
double[]	m
static double	NEAR_EXP The exponent for NEAR hedge.
static double	POSITIVE_EXP The exponent for POSITIVE hedge.
double[]	results
static double	ROUGHLY_EXP The exponent for ROUGHLY hedge.
static long	serialVersionUID
static double	SLIGHTLY_EXP The exponent for SLIGHTLY hedge.
static double	SOMEWHAT_EXP The exponent for SOMEWHAT hedge.
int	VECMAX
static double	VERY_EXP The exponent for VERY hedge.
static double	VICINITY_EXP The exponent for VICINITY hedge.

Fields inherited from class infosapient.system.FzySystemComponent

DEBUG_, myID, name, pcs, serialVersionUID, trace, vcs

Fields inherited from class infosapient.system.ObservableImpl

arr, changed, obs, serialVersionUID

Constructor Summary

FzyHedge()


Method Summary

abstract FzySet	apply(FzySet aSet) Implemented by my subclasses to perform the requested fuzzy set surface modification.
static FzyHedge	CreateHedgeFor(java.lang.String hName) Factory method for creating a hedge without knowledge of actual classes.
double	getSolutionDOM() Overriden for FzyClauseComponent interface compliance.
boolean	hasSolution() Overriden for FzyClauseComponent interface compliance.
void	printOn(java.io.Writer outWriter, int nTabs) Currently overridden as a no op for FzySystemComponent compliance.
void	reset() Overriden for FzyClauseComponent interface compliance.
java.lang.StringBuffer	toXML() Represent this hedge as XML tags.
java.lang.StringBuffer	toXML(int nTabs) Represent this hedge as XML tags.

Methods inherited from class infosapient.system.FzySystemComponent

addPropertyChangeListener, addVetoableChangeListener, equals, getID, getName, getPropertyChangeSupport, getVetoableChangeSupport, hashCode, removePropertyChangeListener, removeVetoableChangeListener, setID, setName

Methods inherited from class infosapient.system.ObservableImpl

addObserver, clearChanged, containsObserver, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

CN

private static java.lang.StringBuffer CN

serialVersionUID

public static final long serialVersionUID

ROUGHLY_EXP

public static final double ROUGHLY_EXP

The exponent for ROUGHLY hedge. ROUGHLY_EXP = 0.33333d;

AROUND_EXP

public static final double AROUND_EXP

The exponent for AROUND hedge. AROUND_EXP = 0.4d;

SOMEWHAT_EXP

public static final double SOMEWHAT_EXP

The exponent for SOMEWHAT hedge. SOMEWHAT_EXP = 0.5d;

SLIGHTLY_EXP

public static final double SLIGHTLY_EXP

The exponent for SLIGHTLY hedge. SLIGHTLY_EXP = 0.75d;

ABOUT_EXP

public static final double ABOUT_EXP

The exponent for ABOUT hedge. ABOUT_EXP = 1.25d;

NEAR_EXP

public static final double NEAR_EXP

The exponent for NEAR hedge. NEAR_EXP = 1.5d;

CLOSE_EXP

public static final double CLOSE_EXP

The exponent for CLOSE hedge. CLOSE_EXP = 1.75d;

POSITIVE_EXP

public static final double POSITIVE_EXP

The exponent for POSITIVE hedge. POSITIVE_EXP = 2.0d;

VERY_EXP

public static final double VERY_EXP

The exponent for VERY hedge. VERY_EXP = 2.0d;

DEFINITELY_EXP

public static final double DEFINITELY_EXP

The exponent for DEFINITELY hedge. DEFINITELY_EXP = 3.0d;

VICINITY_EXP

public static final double VICINITY_EXP

The exponent for VICINITY hedge. VICINITY_EXP = 4.0d;

EXTREMELY_EXP

public static final double EXTREMELY_EXP

The exponent for EXTREMELY_EXP hedge. EXTREMELY_EXP = 4.0d;

INC_DEC_FACTOR

public static final double INC_DEC_FACTOR

The amount that is added or subtracted for increase or decrease hedges. INC_DEC_FACTOR = 0.1d

VECMAX

public int VECMAX

m

public double[] m

results

public double[] results

Constructor Detail

FzyHedge

public FzyHedge()

Method Detail

apply

public abstract FzySet apply(FzySet aSet)

Implemented by my subclasses to perform the requested fuzzy set surface modification.

Parameters:

FzySet - -- the fuzzy set to have the hedge applied

Returns:

FzySet -- the cloned, modified fuzzy set.

CreateHedgeFor

public static FzyHedge CreateHedgeFor(java.lang.String hName)
                               throws FzySystemException

Factory method for creating a hedge without knowledge of actual classes.

Parameters:

String - - hedge name

Returns:

FzyHedge - newly created fuzzy hedge.

getSolutionDOM

public double getSolutionDOM()

Overriden for FzyClauseComponent interface compliance.

Returns:

Double.NaN

hasSolution

public boolean hasSolution()

Overriden for FzyClauseComponent interface compliance.

Returns:

boolean FALSE

printOn

public void printOn(java.io.Writer outWriter,
                    int nTabs)
             throws java.io.IOException

Currently overridden as a no op for FzySystemComponent compliance.

Overrides:

printOn in class FzySystemComponent

reset

public void reset()

Overriden for FzyClauseComponent interface compliance. Currently no-op.

toXML

public java.lang.StringBuffer toXML()

Represent this hedge as XML tags. Creation date: (1/31/00 8:08:27 AM)

Returns:

java.lang.StringBuffer

toXML

public java.lang.StringBuffer toXML(int nTabs)

Represent this hedge as XML tags. Creation date: (1/31/00 8:08:27 AM)

Specified by:

toXML in interface XMLOutput

Returns:

java.lang.StringBuffer