<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'>&gt; +#define MLPACK_METHODS_EDGE_BOXES_STRUCTURED_TREE_HPP
&gt; +//#define INF 999999.9999
&gt; +//#define EPS 1E-20
&gt; +#include &lt;mlpack/core.hpp&gt;
&gt; +
&gt; +namespace mlpack {
&gt; +namespace structured_tree {
&gt; +
&gt; +template &lt;typename MatType = arma::mat, typename CubeType = arma::cube&gt;
&gt; +class StructuredForests
&gt; +{
&gt; +
&gt; + public:
&gt; +
&gt; +  static constexpr double eps = 1e-20;
&gt; +
</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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