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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_HEDGE_H
#define FL_HEDGE_H
#include "fl/fuzzylite.h"
#include "fl/Complexity.h"
#include <string>
namespace fl {
/**
The Hedge class is the abstract class for hedges. Hedges are utilized
within the Antecedent and Consequent of a Rule in order to modify the
membership function of a linguistic Term.
@author Juan Rada-Vilela, Ph.D.
@see Antecedent
@see Consequent
@see Rule
@see HedgeFactory
@since 4.0
*/
class FL_API Hedge {
public:
Hedge() {
}
virtual ~Hedge() {
}
FL_DEFAULT_COPY_AND_MOVE(Hedge)
/**
Returns the name of the hedge
@return the name of the hedge
*/
virtual std::string name() const = 0;
/**
Computes the estimated complexity of applying the hedge
@return the estimated complexity of applying the hedge
*/
virtual Complexity complexity() const = 0;
/**
Computes the hedge for the membership function value @f$x@f$
@param x is a membership function value
@return the hedge of @f$x@f$
*/
virtual scalar hedge(scalar x) const = 0;
/**
Creates a clone of the hedge
@return a clone of the hedge.
*/
virtual Hedge* clone() const = 0;
};
}
#endif /* FL_HEDGE_H */
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