<p>In <a href="https://github.com/mlpack/mlpack/pull/691#discussion_r68061002">src/mlpack/methods/lsh/lsh_search_impl.hpp</a>:</p>
<pre style='color:#555'>&gt;    for (size_t i = 0; i &lt; hashVec.n_elem; i++)
&gt;      hashVec[i] = (double) ((size_t) hashVec[i] % secondHashSize);
&gt;  
&gt;    Log::Assert(hashVec.n_elem == numTablesToSearch);
&gt;  
&gt; +  // Compute hashVectors of additional probing bins
&gt; +  arma::mat hashMat;
&gt; +  if (T &gt; 0)
&gt; +  {
&gt; +    hashMat.zeros(T, numTablesToSearch);
</pre>
<p>If I concatenate a (T x numTablesToSearch) matrix with a (1 x numTablesToSearch) vector, won't I get a T+1 row matrix? </p>

<p>I understood from armadillo documnetation that <code>join_vert</code> resizes hashMat. Am I throwing the last vector away like that?</p>

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