<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r68431699">src/mlpack/methods/edge_boxes/feature_extraction_impl.hpp</a>:</p>
<pre style='color:#555'>> +#include "feature_extraction.hpp"
> +#include <mlpack/methods/pca/pca.hpp>
> +namespace mlpack {
> +namespace structured_tree {
> +
> +/**
> + * Constructor: stores all the parameters in an object
> + * of feature_parameters class.
> + */
> +template<typename MatType, typename CubeType>
> +StructuredForests<MatType, CubeType>::
> +StructuredForests(FeatureParameters F) : params(F) {}
> +
> +/*
> +template<typename MatType, typename CubeType>
> +MatType StructuredForests<MatType, CubeType>::
</pre>
<p>I guess we can remove useless codes, let git help us memorize the codes we written</p>
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