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Hadrons: genetic operators improvement

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This commit is contained in:
Antonin Portelli 2016-12-13 19:02:05 +00:00
parent 4a87486365
commit de8f80cf94
1 changed files with 25 additions and 11 deletions
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36
extras/Hadrons/GeneticScheduler.hpp
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@ -79,8 +79,9 @@ private:
void doMutation(void);
// genetic operators
GenePair selectPair(void);
void crossover(Gene &c, const Gene &p1, const Gene &p2);
void crossover(Gene &c1, Gene &c2, const Gene &p1, const Gene &p2);
void mutation(Gene &m, const Gene &c);
private:
Graph<T> &graph_;
const ObjFunc &func_;
@ -169,11 +170,10 @@ template <typename T>
void GeneticScheduler<T>::doCrossover(void)
{
auto p = selectPair();
auto &p1 = *(p.first), &p2 = *(p.second);
Gene &p1 = *(p.first), &p2 = *(p.second);
Gene c1, c2;
crossover(c1, p1, p2);
crossover(c2, p2, p1);
crossover(c1, c2, p1, p2);
PARALLEL_CRITICAL
{
population_.emplace(func_(c1), c1);
@ -196,7 +196,6 @@ void GeneticScheduler<T>::doMutation(void)
mutation(m, it->second);
PARALLEL_CRITICAL
{
population_.erase(it);
population_.emplace(func_(m), m);
}
}
@ -236,22 +235,37 @@ typename GeneticScheduler<T>::GenePair GeneticScheduler<T>::selectPair(void)
}
template <typename T>
void GeneticScheduler<T>::crossover(Gene &c, const Gene &p1, const Gene &p2)
void GeneticScheduler<T>::crossover(Gene &c1, Gene &c2, const Gene &p1,
const Gene &p2)
{
Gene buf;
std::uniform_int_distribution<unsigned int> dis(0, p1.size() - 1);
unsigned int cut = dis(gen_);
c.clear();
buf = p1;
c1.clear();
buf = p2;
for (unsigned int i = 0; i < cut; ++i)
{
c.push_back(p2[i]);
buf.erase(std::find(buf.begin(), buf.end(), p2[i]));
c1.push_back(p1[i]);
buf.erase(std::find(buf.begin(), buf.end(), p1[i]));
}
for (unsigned int i = 0; i < buf.size(); ++i)
{
c.push_back(buf[i]);
c1.push_back(buf[i]);
}
c2.clear();
buf = p2;
for (unsigned int i = cut; i < p1.size(); ++i)
{
buf.erase(std::find(buf.begin(), buf.end(), p1[i]));
}
for (unsigned int i = 0; i < buf.size(); ++i)
{
c2.push_back(buf[i]);
}
for (unsigned int i = cut; i < p1.size(); ++i)
{
c2.push_back(p1[i]);
}
}