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Diffstat (limited to 'fuzzylite/src/defuzzifier/LargestOfMaximum.cpp')
-rw-r--r-- | fuzzylite/src/defuzzifier/LargestOfMaximum.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/fuzzylite/src/defuzzifier/LargestOfMaximum.cpp b/fuzzylite/src/defuzzifier/LargestOfMaximum.cpp new file mode 100644 index 0000000..ff05707 --- /dev/null +++ b/fuzzylite/src/defuzzifier/LargestOfMaximum.cpp @@ -0,0 +1,65 @@ +/* + 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. + */ + +#include "fl/defuzzifier/LargestOfMaximum.h" + +#include "fl/Exception.h" +#include "fl/term/Term.h" + +namespace fl { + + LargestOfMaximum::LargestOfMaximum(int resolution) + : IntegralDefuzzifier(resolution) { } + + LargestOfMaximum::~LargestOfMaximum() { } + + std::string LargestOfMaximum::className() const { + return "LargestOfMaximum"; + } + + Complexity LargestOfMaximum::complexity(const Term* term) const { + return Complexity().comparison(1).arithmetic(1 + 2) + + term->complexity().comparison(1).arithmetic(3).multiply(getResolution()); + } + + scalar LargestOfMaximum::defuzzify(const Term* term, scalar minimum, scalar maximum) const { + if (not Op::isFinite(minimum + maximum)) return fl::nan; + + const int resolution = getResolution(); + const scalar dx = (maximum - minimum) / resolution; + scalar x, y; + scalar ymax = -1.0, xlargest = maximum; + for (int i = 0; i < resolution; ++i) { + x = minimum + (i + 0.5) * dx; + y = term->membership(x); + + if (Op::isGE(y, ymax)) { + ymax = y; + xlargest = x; + } + } + return xlargest; + } + + LargestOfMaximum* LargestOfMaximum::clone() const { + return new LargestOfMaximum(*this); + } + + Defuzzifier* LargestOfMaximum::constructor() { + return new LargestOfMaximum; + } + +} |