d="cb6-3"><a href="#cb6-3"></a></span>
<span id="cb6-4"><a href="#cb6-4"></a><span class="fu">class</span>(words_sparse)</span>
<span id="cb6-5"><a href="#cb6-5"></a><span class="co">#&gt; [1] "dgCMatrix"</span></span>
<span id="cb6-6"><a href="#cb6-6"></a><span class="co">#&gt; attr(,"package")</span></span>
<span id="cb6-7"><a href="#cb6-7"></a><span class="co">#&gt; [1] "Matrix"</span></span>
<span id="cb6-8"><a href="#cb6-8"></a><span class="fu">dim</span>(words_sparse)</span>
<span id="cb6-9"><a href="