n id="cb21-1"><a href="#cb21-1"></a>heldout <span class="ot">&lt;-</span> <span class="fu">make.heldout</span>(words_sparse)</span>
<span id="cb21-2"><a href="#cb21-2"></a></span>
<span id="cb21-3"><a href="#cb21-3"></a>k_result <span class="ot">&lt;-</span> many_models <span class="sc">%&gt;%</span></span>
<span id="cb21-4"><a href="#cb21-4"></a>    <span class="fu">mutate</span>(<span class="at">exclusivity        =</span> <span class="fu">map</span>(topic_model, exclusivity),</span>
<span id="cb21-5"><a 