<p>In <a href="https://github.com/mlpack/mlpack/pull/691#discussion_r68640146">src/mlpack/methods/lsh/lsh_search_impl.hpp</a>:</p>
<pre style='color:#555'>&gt; +        perturbationSets.push_back(Ae); // add expanded set to sets
&gt; +        minHeap.push(
&gt; +            std::make_pair(
&gt; +              perturbationScore(Ae, scores),
&gt; +              perturbationSets.size() - 1)
&gt; +            );
&gt; +      }
&gt; +
&gt; +    }while (! perturbationValid(Ai, numProj)  );//Discard invalid perturbations
&gt; +
&gt; +    // add perturbation vector to probing sequence if valid
&gt; +    for (size_t i = 0; i &lt; Ai.size(); ++i)
&gt; +      additionalProbingBins(positions(Ai[i]), pvec) += actions(Ai[i]);
&gt; +
&gt; +  }
&gt; +  */
</pre>
<p>If you like the new implementation, we can go ahead and remove the old one. :)  There are some other commented-out implementations above that we can remove too.</p>

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