<p>In <a href="https://github.com/mlpack/mlpack/pull/708#discussion_r71807579">src/mlpack/core/tree/vantage_point_tree/vantage_point_tree_impl.hpp</a>:</p>
<pre style='color:#555'>> + // same, we can't split them.
> + if (!split)
> + return;
> +
> + // Now that we know the split column, we will recursively split the children
> + // by calling their constructors (which perform this splitting process).
> + left = new VantagePointTree(this, splitBegin, splitCol - splitBegin, splitter,
> + maxLeafSize, true);
> + right = new VantagePointTree(this, splitCol, splitBegin + splitCount - splitCol,
> + splitter, maxLeafSize, false);
> +
> + // Calculate parent distances for those two nodes.
> + arma::vec center, leftCenter, rightCenter;
> + Center(center);
> + left->Center(leftCenter);
> + right->Center(rightCenter);
</pre>
<p>Shouldn't the parent distance be identical for both children? (I think it will just be the distance between this node's vantage point and the left child's vantage point)</p>
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