IFuzzyVariable Interface

ICloneable
FuzzyInterfaces.IFuzzyVariable
IFuzzyLogic.TIFuzzyVariable

Delphi

type
  IFuzzyVariable = interface(ICloneable)
  ['{F749FF55-FFF4-4F92-9B6F-14568D174661}']
  end;

	Name	Description
	AsString	Returns a string representation of the fuzzy variable and its fuzzy sets. The string representation is parsable by the parser defined in the Parser property
	Comment	Contains a comment about the fuzzy variable. Use this property for any descriptive text you want to define about the fuzzy variable
	Count	Returns the number of fuzzy sets defined in the fuzzy variable
	DefuzzificationMethod	Defines the defuzzification method that fuzzy sets should use for determining a value that best represents the fuzzy set. There are two methods available: center of gravity and mean of maxima
	FuzzySetByName[String]	Returns the fuzzy set defined in the fuzzy variable that has the specified name. An exception is raised if a fuzzy set with that name does not exist
	FuzzySet[Integer]	Returns the fuzzy set defined in the fuzzy variable at the specified index
	Maximum	Defines the maximum X value for the fuzzy variable, its universe of discourse.
	Minimum	Defines the minimum X value for the fuzzy variable, its universe of discourse.
	Name	Defines the name of the fuzzy variable.
	NumFunctionValues	Defines the default number of XY value pairs used to create fuzzy sets.
	OnChange	Occurs when the fuzzy variable is changed, either its properties such as Minimum and Maximum or when fuzzy sets are added and deleted.
	Parser	Refers to the IFuzzyParser interface implementation which can print and parse the fuzzy variable and its fuzzy sets
	Threshold	Defines the "noise" level of fuzzy sets in the variable. When two fuzzy sets are compared to see if they are equal, all the XY value pairs of the two fuzzy sets are compared. If the minimum Y value of the two fuzzy sets at some X point exceed the threshold, then they equal
	Units	Defines the units of the universe of discourse (the X range units). For example, if the fuzzy variable was temperature, the Units may be 'Celcius' or 'Kelvin'.

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	Name	Description
	Add(IFuzzySet)	Overloaded. Adds the existing fuzzy set, or term, into the fuzzy variable. If a fuzzy set already exists in the fuzzy variable with the same name, the old fuzzy set is deleted.
	Add(String)	Overloaded. Creates a new fuzzy set, or term, in the fuzzy variable with the specified name. If a fuzzy set already exists in the fuzzy variable with the same name, the old fuzzy set is deleted
	AssertRule(IFuzzySet,IFuzzySet,IFuzzySet,IFuzzySet)	Overloaded. Performs implication using correlation rules.
	AssertRule(IFuzzySet[],IFuzzySet[],IFuzzySet,IFuzzySet)	Overloaded. Performs implication using correlation rules.
	AssertRule(TFzyFloat,IFuzzySet,IFuzzySet)	Overloaded. Performs implication using correlation rules.
	AssignFuzzySets(IFuzzyVariable)	Copies the fuzzy sets from the Source fuzzy variable to the current variable. All the original fuzzy sets are deleted
	BeginUpdate	Suspends change events from occuring until the EndUpdate method is called. Use BeginUpdate to speed processing while values are added to or deleted from the fuzzy variable
	Clear	Deletes all the fuzzy sets from the variable
	ContainsFuzzySet(String)	Checks to see if a fuzzy set of the specified name exists in the fuzzy variable. If the fuzzy set does exist, it is returned, else nil.
	EndUpdate	Reenables change events after BeginUpdate has been called. Calls to BeginUpdate are cumulative, so calling EndUpdate will only fire a change event if every other call to BeginUpdate has already been matched by a call to EndUpdate.
	FuzzySetChanged(IFuzzySet)	Call this method when the fuzzy set has been modified
	GetComment	Accessor method for the Comment property
	GetCorrelationStrength(IFuzzySet[],IFuzzySet[])	Returns the minimum of the correlation strengths of the Premises matched with the Matchings fuzzy sets
	GetCount	Accessor method for the Count property
	GetDefuzzificationMethod	Accessor method for the DefuzzificationMethod property
	GetFuzzySet(Integer)	Accessor method for the FuzzySet property
	GetFuzzySetByName(String)	Accessor method for the FuzzySetByName property
	GetMaximum	Accessor method for the Maximum property
	GetMinimum	Accessor method for the Minimum property
	GetName	Accessor method for the Name property
	GetNumFunctionValues	Accessor method for the NumFunctionValues property
	GetOnChange	Accessor method for the OnChange event
	GetOnFuzzySetAdded	Accessor method for the OnFuzzySetAdded event
	GetOnFuzzySetChange	Accessor method for the OnFuzzySetChange event
	GetOnFuzzySetDeleted	Accessor method for the OnFuzzySetDeleted event
	GetOnVariableChange	Accessor method for the OnVariableChange event
	GetParser	Accessor method for the Parser property
	GetThreshold	Accessor method for the Threshold property
	GetUnits	Accessor method for the Units property
	get_AsString	Represents method get_AsString.
	get_Comment	Represents method get_Comment.
	get_Count	Represents method get_Count.
	get_DefuzzificationMethod	Represents method get_DefuzzificationMethod.
	get_FuzzySet(Integer)	Represents method get_FuzzySet(Integer).
	get_FuzzySetByName(String)	Represents method get_FuzzySetByName(String).
	get_Maximum	Represents method get_Maximum.
	get_Minimum	Represents method get_Minimum.
	get_Name	Represents method get_Name.
	get_NumFunctionValues	Represents method get_NumFunctionValues.
	get_OnChange	Represents method get_OnChange.
	get_OnFuzzySetAdded	Represents method get_OnFuzzySetAdded.
	get_OnFuzzySetChange	Represents method get_OnFuzzySetChange.
	get_OnFuzzySetDeleted	Represents method get_OnFuzzySetDeleted.
	get_OnVariableChange	Represents method get_OnVariableChange.
	get_Parser	Represents method get_Parser.
	get_Threshold	Represents method get_Threshold.
	get_Units	Represents method get_Units.
	Remove(IFuzzySet)	Deletes the fuzzy set from the fuzzy variable
	SetComment(String)	Accessor method for the Comment property
	SetDefuzzificationMethod(TDefuzzificationMethod)	Accessor method for the DefuzzificationMethod property
	SetMaximum(TFzyFloat)	Accessor method for the Maximum property
	SetMinimum(TFzyFloat)	Accessor method for the Minimum property
	SetName(String)	Accessor method for the Name property
	SetNumFunctionValues(Integer)	Accessor method for the NumFunctionValues property
	SetOnChange(TNotifyEvent)	Accessor method for the OnChange event
	SetOnFuzzySetAdded(TIFuzzySetEvent)	Accessor method for the OnFuzzySetAdded event
	SetOnFuzzySetChange(TIFuzzySetEvent)	Accessor method for the OnFuzzySetChange event
	SetOnFuzzySetDeleted(TIFuzzySetEvent)	Accessor method for the OnFuzzySetDeleted event
	SetOnVariableChange(TIFuzzyVariableEvent)	Accessor method for the OnVariableChange event
	SetParser(IFuzzyParser)	Accessor method for the Parser property
	SetThreshold(TFzyFloat)	Accessor method for the Threshold property
	SetUnits(String)	Accessor method for the Units property
	set_Comment(String)	Represents method set_Comment(String).
	set_DefuzzificationMethod(TDefuzzificationMethod)	Represents method set_DefuzzificationMethod(TDefuzzificationMethod).
	set_Maximum(TFzyFloat)	Represents method set_Maximum(TFzyFloat).
	set_Minimum(TFzyFloat)	Represents method set_Minimum(TFzyFloat).
	set_Name(String)	Represents method set_Name(String).
	set_NumFunctionValues(Integer)	Represents method set_NumFunctionValues(Integer).
	set_OnChange(TNotifyEvent)	Represents method set_OnChange(TNotifyEvent).
	set_OnFuzzySetAdded(TIFuzzySetEvent)	Represents method set_OnFuzzySetAdded(TIFuzzySetEvent).
	set_OnFuzzySetChange(TIFuzzySetEvent)	Represents method set_OnFuzzySetChange(TIFuzzySetEvent).
	set_OnFuzzySetDeleted(TIFuzzySetEvent)	Represents method set_OnFuzzySetDeleted(TIFuzzySetEvent).
	set_OnVariableChange(TIFuzzyVariableEvent)	Represents method set_OnVariableChange(TIFuzzyVariableEvent).
	set_Parser(IFuzzyParser)	Represents method set_Parser(IFuzzyParser).
	set_Threshold(TFzyFloat)	Represents method set_Threshold(TFzyFloat).
	set_Units(String)	Represents method set_Units(String).
	ToString	Returns a string representation of the fuzzy variable. The string representation is parsable by the parser defined in the Parser property

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	Name	Description
	OnFuzzySetAdded	Occurs when a fuzzy set is added to the fuzzy variable
	OnFuzzySetChange	Occurs when a fuzzy set in the fuzzy variable changes.
	OnFuzzySetDeleted	Occurs when a fuzzy set is removed from the fuzzy variable
	OnVariableChange	Occurs when the fuzzy variable is changed, either its properties such as Minimum and Maximum or when fuzzy sets are added and deleted.

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Fuzzy Variables are much like set variables in Pascal. However, unlike Pascal variables, the enumerated items, or terms, in the set are fuzzy and not crisp. Pascal allows enumerated values to either be in or not in the set. Fuzzy variables allow values to be partially in the set. For example, we may define a fuzzy variable which is based on Temperature. Any variable of this type may take fuzzy set (IFuzzySet) values of cold, warm, and hot (or some combination). Cold, warm, and hot are the fuzzy sets which define the terms of the type. Each fuzzy set defines a membership function over the domain of temperature. If, for our example, temperature has a range between 0 and 100 Celsius, Cold could be a fuzzy set that defined any value under 10 Celcius as completely cold (one or True), any value over 50 as not at all cold (zero), and any value in between having a membership between zero and one.

The most important function of the Fuzzy Variable is that it acts as the domain for its fuzzy sets. It defines the universe of discourse (the X range) over which values and sets in the variable may take. Before working with fuzzy sets, you must define a fuzzy variable. Fuzzy sets must have unique names.

Reference

•FuzzyInterfaces

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