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333 lines
10 KiB
C++
333 lines
10 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 "FuzzyEngine.h"
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#include "MamdaniRule.h"
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#include "FuzzyExceptions.h"
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#include "defs.h"
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#include "StrOp.h"
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#include "TriangularTerm.h"
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#include "ShoulderTerm.h"
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#include <iosfwd>
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#include "FuzzyException.h"
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namespace fl {
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FuzzyEngine::FuzzyEngine() : _name(""),
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_fuzzy_op(&FuzzyOperator::DefaultFuzzyOperator()),
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_hedge_set(new HedgeSet) {
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}
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FuzzyEngine::FuzzyEngine(const std::string& name) : _name(name),
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_fuzzy_op(&FuzzyOperator::DefaultFuzzyOperator()),
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_hedge_set(new HedgeSet) {
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}
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FuzzyEngine::FuzzyEngine(const std::string& name, FuzzyOperator& fuzzy_operator) : _name(name),
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_fuzzy_op(&fuzzy_operator),
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_hedge_set(new HedgeSet) {
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}
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FuzzyEngine::~FuzzyEngine() {
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reset();
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delete _hedge_set;
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}
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void FuzzyEngine::setName(const std::string& name) {
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this->_name = name;
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}
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std::string FuzzyEngine::name() const {
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return this->_name;
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}
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void FuzzyEngine::process(bool clear) {
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if (clear) {
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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outputLVar(i)->output().clear();
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}
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}
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for (int i = 0; i < numberOfRuleBlocks(); ++i) {
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ruleBlock(i)->fireRules();
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}
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}
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void FuzzyEngine::process(int ruleblock, bool clear) {
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if (clear) {
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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outputLVar(i)->output().clear();
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}
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}
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ruleBlock(ruleblock)->fireRules();
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}
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void FuzzyEngine::reset() {
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for (int i = numberOfRuleBlocks() - 1; i >= 0; --i) {
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delete removeRuleBlock(i);
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}
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for (int i = numberOfInputLVars() - 1; i >= 0; --i) {
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delete removeInputLVar(i);
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}
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for (int i = numberOfOutputLVars() - 1; i >= 0; --i) {
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delete removeOutputLVar(i);
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}
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for (int i = hedgeSet().numberOfHedges() - 1; i >= 0; --i) {
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delete hedgeSet().remove(i);
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}
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}
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void FuzzyEngine::addInputLVar(InputLVar* lvar) {
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_input_lvars.push_back(lvar);
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}
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InputLVar* FuzzyEngine::inputLVar(int index) const {
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return _input_lvars[index];
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}
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InputLVar* FuzzyEngine::inputLVar(const std::string& name) const {
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for (int i = 0; i < numberOfInputLVars(); ++i) {
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if (inputLVar(i)->name() == name) {
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return inputLVar(i);
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}
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}
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return NULL;
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}
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InputLVar* FuzzyEngine::removeInputLVar(int index) {
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InputLVar* result = inputLVar(index);
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_input_lvars.erase(_input_lvars.begin() + index);
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return result;
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}
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InputLVar* FuzzyEngine::removeInputLVar(const std::string& name) {
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int index = indexOfInputLVar(name);
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return index == -1 ? NULL : removeInputLVar(index);
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}
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int FuzzyEngine::indexOfInputLVar(const std::string& name) const {
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for (int i = 0; i < numberOfInputLVars(); ++i) {
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if (inputLVar(i)->name() == name) {
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return i;
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}
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}
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return -1;
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}
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int FuzzyEngine::numberOfInputLVars() const {
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return _input_lvars.size();
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}
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void FuzzyEngine::addOutputLVar(OutputLVar* lvar) {
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_output_lvars.push_back(lvar);
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}
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OutputLVar* FuzzyEngine::outputLVar(int index) const {
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return _output_lvars[index];
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}
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OutputLVar* FuzzyEngine::outputLVar(const std::string& name) const {
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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if (outputLVar(i)->name() == name) {
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return outputLVar(i);
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}
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}
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return NULL;
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}
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OutputLVar* FuzzyEngine::removeOutputLVar(int index) {
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OutputLVar* result = outputLVar(index);
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_output_lvars.erase(_output_lvars.begin() + index);
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return result;
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}
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OutputLVar* FuzzyEngine::removeOutputLVar(const std::string& name) {
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int index = indexOfOutputLVar(name);
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return index == -1 ? NULL : removeOutputLVar(index);
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}
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int FuzzyEngine::indexOfOutputLVar(const std::string& name) const {
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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if (outputLVar(i)->name() == name) {
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return i;
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}
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}
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return -1;
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}
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int FuzzyEngine::numberOfOutputLVars() const {
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return _output_lvars.size();
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}
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HedgeSet& FuzzyEngine::hedgeSet() const {
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return *this->_hedge_set;
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}
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void FuzzyEngine::setFuzzyOperator(FuzzyOperator& fuzzy_operator) {
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this->_fuzzy_op = &fuzzy_operator;
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}
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FL_INLINE FuzzyOperator& FuzzyEngine::fuzzyOperator() const {
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return *this->_fuzzy_op;
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}
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//RULES
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void FuzzyEngine::addRuleBlock(RuleBlock* ruleblock) {
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this->_rule_blocks.push_back(ruleblock);
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}
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RuleBlock* FuzzyEngine::removeRuleBlock(int index) {
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RuleBlock* result = ruleBlock(index);
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this->_rule_blocks.erase(this->_rule_blocks.begin() + index);
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return result;
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}
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RuleBlock* FuzzyEngine::ruleBlock(int index) const {
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return this->_rule_blocks[index];
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}
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RuleBlock* FuzzyEngine::ruleBlock(const std::string& name) const {
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for (int i = 0; i < numberOfRuleBlocks(); ++i) {
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if (ruleBlock(i)->name() == name) {
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return ruleBlock(i);
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}
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}
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return NULL;
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}
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int FuzzyEngine::numberOfRuleBlocks() const {
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return this->_rule_blocks.size();
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}
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FL_INLINE void FuzzyEngine::setInput(const std::string& input_lvar, flScalar value) {
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InputLVar* input = inputLVar(input_lvar);
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if (!input) {
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throw InvalidArgumentException(FL_AT, "Input variable <" + input_lvar + "> not registered in fuzzy engine");
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}
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input->setInput(value);
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}
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FL_INLINE flScalar FuzzyEngine::output(const std::string& output_lvar) const {
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OutputLVar* output = outputLVar(output_lvar);
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if (!output) {
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throw InvalidArgumentException(FL_AT, "Output variable <" + output_lvar + "> not registered in fuzzy engine");
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}
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return output->output().defuzzify();
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}
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std::string FuzzyEngine::fuzzyOutput(const std::string& output_lvar) const {
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flScalar defuzzified = output(output_lvar);
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OutputLVar* output = outputLVar(output_lvar);
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if (!output) {
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throw InvalidArgumentException(FL_AT, "Output variable <" + output_lvar + "> not registered in fuzzy engine");
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}
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return output->fuzzify(defuzzified);
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}
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// void FuzzyEngine::fromString(const std::string& fcl) {
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//
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// enum eState {
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// WAITING = 0, VAR_INPUT, FUZZIFY, DEFUZZIFY, RULE_BLOCK,
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// };
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// eState state = WAITING;
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// std::string line;
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// std::string token;
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// std::istringstream is(fcl);
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// std::string current_name;
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// while (!is.eof()) {
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// std::getline(is, line);
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// StrOp::FindReplace(line, "(", " ( ");
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// StrOp::FindReplace(line, ")", " ) ");
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// while (StrOp::FindReplace(line, " ", " ") > 0) {
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// //do nothing;
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// }
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// std::vector<std::string> tokens = StrOp::Tokenize(line, " ");
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// if (tokens.size() == 0) continue;
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// InputLVar* input = NULL;
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// OutputLVar* output = NULL;
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// switch (state) {
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// case WAITING:
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// current_name = tokens.size() > 0 ? tokens[1] : "";
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// if (tokens[0] == "FUNCTION_BLOCK") setName(current_name);
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// else if (tokens[0] == "VAR_INPUT") state = VAR_INPUT;
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// else if (tokens[0] == "FUZZIFY") state = FUZZIFY;
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// else if (tokens[0] == "DEFUZZIFY") state = DEFUZZIFY;
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// else if (tokens[0] == "RULEBLOCK") state = RULE_BLOCK;
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// break;
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// case VAR_INPUT:
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// if (tokens[0] == "END_VAR") state = WAITING;
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// else addInputLVar(new InputLVar(tokens[0]));
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// break;
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// case FUZZIFY:
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// if (tokens[0] == "TERM") {
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// input = inputLVar(current_name);
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// ParsingException::Assert(FL_AT, input, "Input <" << current_name << "> not registered");
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//
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// } else if (tokens[0] == "END_FUZZIFY") state = WAITING;
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// break;
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// case DEFUZZIFY:
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// case RULE_BLOCK:
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// }
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// }
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// }
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std::string FuzzyEngine::toString() const {
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std::stringstream ss;
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ss << "FUNCTION_BLOCK " << name() << "\n\n";
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ss << "VAR_INPUT\n";
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for (int i = 0; i < numberOfInputLVars(); ++i) {
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ss << inputLVar(i)->name() << ": REAL;\n";
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}
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ss << "END_VAR\n\n";
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for (int i = 0; i < numberOfInputLVars(); ++i) {
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ss << "FUZZIFY " << inputLVar(i)->name() << "\n";
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for (int j = 0; j < inputLVar(i)->numberOfTerms(); ++j) {
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ss << inputLVar(i)->term(j)->toString() << ";\n";
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}
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ss << "END_FUZZIFY\n\n";
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}
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ss << "VAR_OUTPUT\n";
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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ss << outputLVar(i)->name() << ": REAL\n";
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}
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ss << "END_VAR\n\n";
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for (int i = 0; i < numberOfOutputLVars(); ++i) {
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ss << "DEFUZZIFY " << outputLVar(i)->name() << "\n";
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for (int j = 0; j < outputLVar(i)->numberOfTerms(); ++j) {
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ss << outputLVar(i)->term(j)->toString() << ";\n";
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}
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ss << "END_DEFUZZIFY\n\n";
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}
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for (int i = 0; i < numberOfRuleBlocks(); ++i) {
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ss << ruleBlock(i)->toString() << "\n\n";
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}
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ss << "END_FUNCTION_BLOCK";
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return ss.str();
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}
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}
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