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122 lines
4.1 KiB
C++
122 lines
4.1 KiB
C++
/* Copyright 2010 Juan Rada-Vilela
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "TakagiSugenoConsequent.h"
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#include <stack>
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#include <iosfwd>
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#include "FunctionTerm.h"
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#include "SingletonTerm.h"
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#include "TakagiSugenoTerm.h"
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namespace fl {
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TakagiSugenoConsequent::TakagiSugenoConsequent() {
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_infix2postfix.loadMathOperators();
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}
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TakagiSugenoConsequent::~TakagiSugenoConsequent() {
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}
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const FuzzyEngine& TakagiSugenoConsequent::fuzzyEngine() const {
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return *this->_fuzzy_engine;
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}
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void TakagiSugenoConsequent::setFuzzyEngine(const FuzzyEngine& fuzzy_engine) {
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this->_fuzzy_engine = &fuzzy_engine;
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}
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std::string TakagiSugenoConsequent::consequent() const {
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return this->_consequent;
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}
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void TakagiSugenoConsequent::setConsequent(const std::string& consequent) {
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this->_consequent = consequent;
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}
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std::string TakagiSugenoConsequent::postfixFunction() const {
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return this->_postfix_function;
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}
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void TakagiSugenoConsequent::setPostfixFunction(const std::string& postfix) {
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this->_postfix_function = postfix;
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}
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void TakagiSugenoConsequent::parse(const std::string& consequent,
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const FuzzyEngine& engine) throw (ParsingException) {
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setFuzzyEngine(engine);
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setConsequent(consequent);
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std::stringstream ss(consequent);
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std::string output_lvar;
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ss >> output_lvar;
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if (!fuzzyEngine().outputLVar(output_lvar)) {
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throw ParsingException(FL_AT, "Output variable <" + output_lvar +
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"> not found in fuzzy engine");
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}
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setOutputLVar(fuzzyEngine().outputLVar(output_lvar));
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std::string equal;
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ss >> equal;
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if (equal != "=") {
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throw ParsingException(FL_AT, "<=> expected but found <" + equal + ">");
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}
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std::string right_side;
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std::string token;
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while (ss >> token) {
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right_side += token + " ";
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}
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setPostfixFunction(_infix2postfix.transform(right_side));
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std::map<std::string, flScalar> variables;
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for (int i = 0; i < fuzzyEngine().numberOfInputLVars(); ++i) {
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variables[fuzzyEngine().inputLVar(i)->name()] =
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fuzzyEngine().inputLVar(i)->input();
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}
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for (int i = 0; i < fuzzyEngine().numberOfOutputLVars(); ++i) {
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variables[fuzzyEngine().outputLVar(i)->name()] =
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fuzzyEngine().outputLVar(i)->output().defuzzify();
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}
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try {
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_infix2postfix.evaluate(postfixFunction(), &variables);
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} catch (FuzzyException& e) {
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throw ParsingException(FL_AT, e.message(), e);
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}
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}
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void TakagiSugenoConsequent::execute(flScalar degree) {
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std::map<std::string, flScalar> variables;
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for (int i = 0; i < fuzzyEngine().numberOfInputLVars(); ++i) {
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variables[fuzzyEngine().inputLVar(i)->name()] =
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fuzzyEngine().inputLVar(i)->input();
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}
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for (int i = 0; i < fuzzyEngine().numberOfOutputLVars(); ++i) {
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variables[fuzzyEngine().outputLVar(i)->name()] =
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fuzzyEngine().outputLVar(i)->output().defuzzify();
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}
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TakagiSugenoTerm result(fuzzyEngine().fuzzyOperator(), postfixFunction());
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result.setValue(_infix2postfix.evaluate(postfixFunction(), &variables));
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result.setWeight(degree);
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outputLVar()->output().addTerm(result);
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}
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std::string TakagiSugenoConsequent::toString() const {
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return consequent();
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}
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void TakagiSugenoConsequent::main(int args, char** argv) {
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}
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}
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