diff options
Diffstat (limited to 'fuzzylite/src/term/Concave.cpp')
| -rw-r--r-- | fuzzylite/src/term/Concave.cpp | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/fuzzylite/src/term/Concave.cpp b/fuzzylite/src/term/Concave.cpp index 37679ae..c585edc 100644 --- a/fuzzylite/src/term/Concave.cpp +++ b/fuzzylite/src/term/Concave.cpp @@ -1,25 +1,17 @@ /* - Author: Juan Rada-Vilela, Ph.D. - Copyright (C) 2010-2014 FuzzyLite Limited - All rights reserved + 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 GNU Lesser General Public License as published by the Free - Software Foundation, either version 3 of the License, or (at your option) - any later version. + the terms of the FuzzyLite License included with the software. - fuzzylite is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License - for more details. - - You should have received a copy of the GNU Lesser General Public License - along with fuzzylite. If not, see <http://www.gnu.org/licenses/>. - - fuzzylite™ is a trademark of FuzzyLite Limited. + 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/term/Concave.h" @@ -27,35 +19,47 @@ namespace fl { Concave::Concave(const std::string& name, scalar inflection, scalar end, scalar height) - : Term(name, height), _inflection(inflection), _end(end) { - - } + : Term(name, height), _inflection(inflection), _end(end) { } - Concave::~Concave() { - - } + Concave::~Concave() { } std::string Concave::className() const { return "Concave"; } + Complexity Concave::complexity() const { + return Complexity().comparison(1 + 3).arithmetic(1 + 5); + } + scalar Concave::membership(scalar x) const { - if (fl::Op::isNaN(x)) return fl::nan; - if (fl::Op::isLE(_inflection, _end)) { //Concave increasing - if (fl::Op::isLt(x, _end)) { - return _height * (_end - _inflection) / (2 * _end - _inflection - x); + if (Op::isNaN(x)) return fl::nan; + if (Op::isLE(_inflection, _end)) { //Concave increasing + if (Op::isLt(x, _end)) { + return Term::_height * (_end - _inflection) / (2.0 * _end - _inflection - x); } } else { //Concave decreasing - if (fl::Op::isGt(x, _end)) { - return _height * (_inflection - _end) / (_inflection - 2 * _end + x); + if (Op::isGt(x, _end)) { + return Term::_height * (_inflection - _end) / (_inflection - 2.0 * _end + x); } } - return _height * 1.0; + return Term::_height * 1.0; + } + + scalar Concave::tsukamoto(scalar activationDegree, scalar minimum, scalar maximum) const { + FL_IUNUSED(minimum); + FL_IUNUSED(maximum); + scalar i = _inflection; + scalar e = _end; + return (i - e) / membership(activationDegree) + 2 * e - i; + } + + bool Concave::isMonotonic() const { + return true; } std::string Concave::parameters() const { return Op::join(2, " ", _inflection, _end) + - (not Op::isEq(_height, 1.0) ? " " + Op::str(_height) : ""); + (not Op::isEq(getHeight(), 1.0) ? " " + Op::str(getHeight()) : ""); } @@ -67,7 +71,7 @@ namespace fl { std::ostringstream ex; ex << "[configuration error] term <" << className() << ">" << " requires <" << required << "> parameters"; - throw fl::Exception(ex.str(), FL_AT); + throw Exception(ex.str(), FL_AT); } setInflection(Op::toScalar(values.at(0))); setEnd(Op::toScalar(values.at(1))); @@ -100,8 +104,4 @@ namespace fl { return new Concave; } - - - - } |