<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r68421925">src/mlpack/methods/edge_boxes/feature_extraction_impl.hpp</a>:</p>
<pre style='color:#555'>> +#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;
> +}
> +
> +/*
</pre>
<p>If we do not need the codes again, I think we can remove it, git will record the codes we removed before</p>
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