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

[Marcus Edel]

> +                        true);
> +    genome.AddLink(inputLink);
> +    genome.AddLink(outputLink);
> +  }
> +
> +  // Mutate: enable disabled, or disable enabled link.
> +  void MutateEnableDisable(Genome& genome, bool enabled, double mutateProb) {
> +    std::vector<ssize_t> linkIndexs;
> +    for (ssize_t i=0; i<genome.NumLink(); ++i) {
> +      if (genome.aLinkGenes[i].Enabled() == enabled) {
> +        linkIndexs.push_back(i);
> +      }
> +    }
> +
> +    double p = mlpack::math::Random();
> +    if (p<mutateProb && linkIndexs.size()>0) {

I think it worth to check the mutate probability before we generate the `linkIndexs`list.

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