<p>In <a href="https://github.com/mlpack/mlpack/pull/696#discussion_r67062930">src/mlpack/methods/edge_boxes/feature_extraction.hpp</a>:</p>
<pre style='color:#555'>> +#define MLPACK_METHODS_EDGE_BOXES_STRUCTURED_TREE_HPP
> +//#define INF 999999.9999
> +//#define EPS 1E-20
> +#include <mlpack/core.hpp>
> +
> +namespace mlpack {
> +namespace structured_tree {
> +
> +template <typename MatType = arma::mat, typename CubeType = arma::cube>
> +class StructuredForests
> +{
> +
> + public:
> +
> + static constexpr double eps = 1e-20;
> +
</pre>
<p>We don't use that particular parameter, also making it public isn't a good idea at all. We could just define it inside the function.</p>
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