 of the
parameters.</p>
<p>If the user specifies the number of leapfrog steps (i.e., chooses to
use standard HMC), that number of leapfrog steps are simulated. If
the user has not specified the number of leapfrog steps, the No-U-Turn
sampler (NUTS) will determine the number of leapfrog steps adaptively
<span class="citation">(Hoffman and Gelman <a href="#ref-Hoffman-Gelman:2014">2014</a>)</span>.</p>
</div>
<div id="log-probability-and-gradient-calculation" class="section level3 unnumbered">
<h3>Log probabi