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genetic-bit-string-evolver
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Enhance fitness differences a bit

This commit is contained in:
Mike 2018-04-14 06:31:34 -07:00
parent dc75f730ab
commit d2997d9a5c
1 changed files with 4 additions and 1 deletions
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5
RouletteWheel.cpp
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@ -173,6 +173,7 @@ namespace BitEvolver
// //
pair.first = chromosome->GetFitness() - fitness_low; pair.first = chromosome->GetFitness() - fitness_low;
pair.first *= pair.first; // Square to enhance the difference a little
pair.second = chromosome; pair.second = chromosome;
// //
@ -222,7 +223,9 @@ namespace BitEvolver
std::unique_lock<std::recursive_mutex> lock(this->chromosomes_mutex); std::unique_lock<std::recursive_mutex> lock(this->chromosomes_mutex);
std::vector<std::pair<double, std::shared_ptr<Chromosome>>> chromosomes_normalized_fitness; std::vector<std::pair<double, std::shared_ptr<Chromosome>>> chromosomes_normalized_fitness;
std::pair<double,std::shared_ptr<Chromosome>> wheel_slot; std::pair<double,std::shared_ptr<Chromosome>> wheel_slot;
double slot_begin_value; double
slot_begin_value
;
// //
if ( !this->slots_need_population ) { if ( !this->slots_need_population ) {