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/*
fuzzylite (R), a fuzzy logic control library in C++.
Copyright (C) 2010-2017 FuzzyLite Limited. All rights reserved.
Author: Juan Rada-Vilela, Ph.D. <jcrada@fuzzylite.com>
This file is part of fuzzylite.
fuzzylite is free software: you can redistribute it and/or modify it under
the terms of the FuzzyLite License included with the software.
You should have received a copy of the FuzzyLite License along with
fuzzylite. If not, see <http://www.fuzzylite.com/license/>.
fuzzylite is a registered trademark of FuzzyLite Limited.
*/
#ifndef FL_ACTIVATED_H
#define FL_ACTIVATED_H
#include "fl/term/Term.h"
namespace fl {
class TNorm;
/**
The Activated class is a special Term that contains pointers to the
necessary information of a term that has been activated as part of the
Antecedent of a Rule. The ownership of the pointers is not transferred to
objects of this class. The Activated class was named
`Thresholded` in versions 4.0 and earlier.
@author Juan Rada-Vilela, Ph.D.
@see OutputVariable
@see Term
@since 5.0
*/
class FL_API Activated : public Term {
private:
const Term* _term;
scalar _degree;
const TNorm* _implication;
public:
explicit Activated(const Term* term = fl::null, scalar degree = 1.0,
const TNorm* implication = fl::null);
virtual ~Activated() FL_IOVERRIDE;
FL_DEFAULT_COPY_AND_MOVE(Activated)
virtual std::string className() const FL_IOVERRIDE;
/**
Returns the parameters of the term
@return `"degree implication term"`
*/
virtual std::string parameters() const FL_IOVERRIDE;
/**
Does nothing.
@param parameters are irrelevant
*/
virtual void configure(const std::string& parameters) FL_IOVERRIDE;
virtual Complexity complexity() const FL_IOVERRIDE;
/**
Computes the implication of the activation degree and the membership
function value of @f$x@f$
@param x is a value
@return @f$d \otimes \mu(x)@f$, where @f$d@f$ is the activation degree
*/
virtual scalar membership(scalar x) const FL_IOVERRIDE;
virtual std::string toString() const FL_IOVERRIDE;
/**
Sets the activated term
@param term is the activated term
*/
virtual void setTerm(const Term* term);
/**
Gets the activated term
@return the activated term
*/
virtual const Term* getTerm() const;
/**
Sets the activation degree of the term
@param degree is the activation degree of the term
*/
virtual void setDegree(scalar degree);
/**
Gets the activation degree of the term
@return the activation degree of the term
*/
virtual scalar getDegree() const;
/**
Sets the implication operator
@param implication is the implication operator
*/
virtual void setImplication(const TNorm* implication);
/**
Gets the implication operator
@return the implication operator
*/
virtual const TNorm* getImplication() const;
virtual Activated* clone() const FL_IOVERRIDE;
};
}
#endif /* FL_ACTIVATED_H */
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