lass="st">"negative"</span><span class="op">)</span></span></code></pre></div>
<div class="sourceCode" id="cb17"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">head</a></span><span class="op">(</span><span class="va">surf_decoding</span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">##        keyword     r</span></span>
<span><span class="co">## 538  retrieval 0.065<