<p>In <a href="https://github.com/mlpack/mlpack/pull/664#discussion_r68488960">src/mlpack/core/tree/rectangle_tree/discrete_hilbert_value.hpp</a>:</p>
<pre style='color:#555'>&gt; +  void Copy(TreeType* dst, TreeType* src);
&gt; +  
&gt; +  void NullifyData();
&gt; +  
&gt; +  /**
&gt; +   * Update the largest Hilbert value and the local dataset.
&gt; +   * The children of the node (or the points that the node contains) should be
&gt; +   * arranged according to their Hilbert values.
&gt; +   * @param node The node in which the information should be updated.
&gt; +   */
&gt; +  template&lt;typename TreeType&gt;
&gt; +  void UpdateLargestValue(TreeType* node);
&gt; +
&gt; +  template&lt;typename TreeType&gt;
&gt; +  void UpdateHilbertValues(TreeType* parent, size_t firstSibling,
&gt; +                           size_t lastSibling);
</pre>
<p>Yeah, I agree that that is a good name change.</p>

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