summaryrefslogtreecommitdiff
path: root/fuzzylite/src/defuzzifier/LargestOfMaximum.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'fuzzylite/src/defuzzifier/LargestOfMaximum.cpp')
-rw-r--r--fuzzylite/src/defuzzifier/LargestOfMaximum.cpp65
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;
+ }
+
+}