or log density.</p>
</div>
<div id="no-u-turn-sampling" class="section level3 unnumbered">
<h3>No-U-Turn Sampling</h3>
<p>Stan’s default no-U-turn sampler (NUTS), is even more efficient at
exploring the posterior; see
<span class="citation">Hoffman and Gelman (<a href="#ref-Hoffman-Gelman:2011" role="doc-biblioref">2011</a>)</span> and <span class="citation">Hoffman and Gelman (<a href="#ref-Hoffman-Gelman:2014" role="doc-biblioref">2014</a>)</span>. NUTS simulates the
motion of the fictitious particle re