<p>In <a href="https://github.com/mlpack/mlpack/pull/708#discussion_r71806624">src/mlpack/core/tree/vantage_point_tree/vantage_point_split_impl.hpp</a>:</p>
<pre style='color:#555'>> +
> +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;
> +
> + samples.zeros(upperBound);
> +
> + for (size_t i = 0; i < numSamples; i++)
> + samples [ (size_t) math::RandInt(upperBound) ]++;
> +
> + distinctSamples = arma::find(samples > 0);
</pre>
<p>I think this does not guarantee that <code>distinctSamples.n_elem == numSamples</code>. Correct me if I have misunderstood.</p>
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