fast artificial neural network library

fann.cpp

#include <fann.h>
#include <fann_cpp.h>

void prepare_data(std::string const &name){
  std::ofstream file(name+ ".data", std::ios::trunc);
  file<< "4 2 1\n"
    << "0 0\n0\n"
    << "0 1\n1\n"
    << "1 0\n1\n"
    << "1 1\n0\n";
}

void prepare_net(std::string const &name,
  std::initializer_list<unsigned> layers){
  for(int t= 0; t< 10; ++ t){
    FANN::neural_net net;
    std::vector<unsigned> v(layers);
    net.create_standard_array(v.size(), &v[0]);
    net.train_on_file(name+ ".data", 1000, 0, .0f);
    if(net.get_MSE()== 0){
      if(!net.save(name+ ".net")){
        throw std::runtime_error("unable to save: "+ name);
      }
      return;
    }
  }
  throw std::runtime_error("unable to create: "+ name);
}

int main(){
  prepare_data("xor");
  for(int n= 0; n< 100; ++ n)
  {
    prepare_net("xor", { 2, 2, 1 });
  }
}