<p>In <a href="https://github.com/mlpack/mlpack/pull/749#discussion_r74688619">src/mlpack/methods/lsh_model/lshmodel_impl.hpp</a>:</p>
<pre style='color:#555'>&gt; +template &lt;typename SortPolicy, typename ObjectiveFunction&gt;
&gt; +void LSHModel&lt;SortPolicy, ObjectiveFunction&gt;::Train(
&gt; +    const arma::mat &amp;referenceSet,
&gt; +    const double sampleRate,
&gt; +    const size_t k)
&gt; +{
&gt; +  // Sanity check - sample rate must be in (0, 1].
&gt; +  if (sampleRate &gt; 1 || sampleRate &lt;= 0)
&gt; +    Log::Fatal &lt;&lt; &quot;Sampling rate must be floating point number in (0, 1]&quot;
&gt; +        &lt;&lt; std::endl;
&gt; +
&gt; +  // Update the object&#39;s max K value information.
&gt; +  maxKValue = k;
&gt; +
&gt; +  // Save pointer to training set.
&gt; +  this-&gt;referenceSet = &amp;referenceSet;
</pre>
<p>Don't forget to update <code>ownsSet</code> here, and possibly delete the old reference set first.</p>

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