<p>In <a href="https://github.com/mlpack/mlpack/pull/746#discussion_r75855301">src/mlpack/core/tree/cellbound_impl.hpp</a>:</p>
<pre style='color:#555'>&gt;  
&gt; -    hiBound(k, numBounds) = std::min(bounds[k].Hi(), hiCorner[k]);
&gt; +  for (size_t i = 0; i &lt; data.n_cols; i++)
</pre>
<p>Indeed, that provides some benefits. If I am not mistaken, the minimum bounding rectangle is used in the <code>Contains()</code> function but I can replace that by the hyperrectangles.</p>

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