<p>In <a href="https://github.com/mlpack/mlpack/pull/708#discussion_r69545743">src/mlpack/core/tree/binary_space_tree/vantage_point_split_impl.hpp</a>:</p>
<pre style='color:#555'>> + // Calculate the median value of the distance from the vantage point candidate
> + // to these samples
> + GetMedian(bound, data, samples, vantagePoint, mu);
> + }
> + }
> + assert(bestSpread > 0);
> +}
> +
> +template<typename BoundType, typename MatType>
> +void VantagePointSplit<BoundType, MatType>::
> +GetDistinctSamples(arma::uvec& distinctSamples, const size_t numSamples,
> + const size_t begin, const size_t upperBound)
> +{
> + if (upperBound > numSamples)
> + {
> + arma::Col<size_t> samples;
</pre>
<p>I think it is better to move all temporal vectors and matrices outside (i.e. define as class members). That allows to avoid unnecessary memory allocations.</p>
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