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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.
*/
#include "fl/activation/Proportional.h"
#include "fl/rule/RuleBlock.h"
#include "fl/rule/Rule.h"
#include "fl/Operation.h"
namespace fl {
Proportional::Proportional() : Activation() { }
Proportional::~Proportional() { }
std::string Proportional::className() const {
return "Proportional";
}
std::string Proportional::parameters() const {
return "";
}
void Proportional::configure(const std::string& parameters) {
FL_IUNUSED(parameters);
}
Complexity Proportional::complexity(const RuleBlock* ruleBlock) const {
Complexity result;
for (std::size_t i = 0; i < ruleBlock->numberOfRules(); ++i) {
result.comparison(1).arithmetic(1);
result += ruleBlock->getRule(i)->complexityOfActivation(
ruleBlock->getConjunction(), ruleBlock->getDisjunction());
}
for (std::size_t i = 0; i < ruleBlock->numberOfRules(); ++i) {
result.arithmetic(1);
result += ruleBlock->getRule(i)->complexityOfFiring(ruleBlock->getImplication());
}
return result;
}
void Proportional::activate(RuleBlock* ruleBlock) {
FL_DBG("Activation: " << className() << " " << parameters());
const TNorm* conjunction = ruleBlock->getConjunction();
const SNorm* disjunction = ruleBlock->getDisjunction();
const TNorm* implication = ruleBlock->getImplication();
scalar sumActivationDegrees = 0.0;
std::vector<Rule*> rulesToActivate;
const std::size_t numberOfRules = ruleBlock->numberOfRules();
for (std::size_t i = 0; i < numberOfRules; ++i) {
Rule* rule = ruleBlock->getRule(i);
rule->deactivate();
if (rule->isLoaded()) {
scalar activationDegree = rule->activateWith(conjunction, disjunction);
rulesToActivate.push_back(rule);
sumActivationDegrees += activationDegree;
}
}
for (std::size_t i = 0; i < rulesToActivate.size(); ++i) {
Rule* rule = rulesToActivate.at(i);
scalar activationDegree = rule->getActivationDegree() / sumActivationDegrees;
rule->setActivationDegree(activationDegree);
rule->trigger(implication);
}
}
Proportional* Proportional::clone() const {
return new Proportional(*this);
}
Activation* Proportional::constructor() {
return new Proportional;
}
}
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