[mlpack-git] [mlpack/mlpack] NeuralEvolution - implemented gene, genome (#686)

[Marcus Edel]

> +    double totalAverageRank = std::accumulate(speciesAverageRank.begin(), speciesAverageRank.end(), 0);
> +
> +    for (ssize_t i=0; i<population.aSpecies.size(); ++i) {
> +      double weak = (std::floor(speciesAverageRank[i] * population.PopulationSize() / totalAverageRank)
> +                    > 1);
> +      if (weak) {
> +        population.RemoveSpecies(i);
> +      }
> +    }
> +  }
> +
> +  // Remove empty species.
> +  void RemoveEmptySpecies(Population& population) {
> +    for (ssize_t i=0; i<population.aSpecies.size(); ++i) {
> +      if (population.aSpecies[i].aGenomes.size() == 0) {
> +        population.aSpecies.erase(population.aSpecies.begin() + i);

I would go with the extra ``RemoveSpecies``function.

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