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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_CENTROID_H
#define FL_CENTROID_H
#include "fl/defuzzifier/IntegralDefuzzifier.h"
namespace fl {
/**
The Centroid class is an IntegralDefuzzifier that computes the centroid
of a fuzzy set represented in a Term.
@author Juan Rada-Vilela, Ph.D.
@see BiSector
@see IntegralDefuzzifier
@see Defuzzifier
@since 4.0
*/
class FL_API Centroid : public IntegralDefuzzifier {
public:
explicit Centroid(int resolution = defaultResolution());
virtual ~Centroid() FL_IOVERRIDE;
FL_DEFAULT_COPY_AND_MOVE(Centroid)
virtual std::string className() const FL_IOVERRIDE;
virtual Complexity complexity(const Term* term) const FL_IOVERRIDE;
/**
Computes the centroid of a fuzzy set. The defuzzification process
integrates over the fuzzy set utilizing the boundaries given as
parameters. The integration algorithm is the midpoint rectangle
method (https://en.wikipedia.org/wiki/Rectangle_method).
@param term is the fuzzy set
@param minimum is the minimum value of the fuzzy set
@param maximum is the maximum value of the fuzzy set
@return the @f$x@f$-coordinate of the centroid of the fuzzy set
*/
virtual scalar defuzzify(const Term* term,
scalar minimum, scalar maximum) const FL_IOVERRIDE;
virtual Centroid* clone() const FL_IOVERRIDE;
static Defuzzifier* constructor();
};
}
#endif /* FL_CENTROID_H */
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