>\(\hat{R}\)</span> values substantially greater than 1
because the first half of each chain has not mixed with the second
half.</p>
</div>
<div id="convergence-is-global" class="section level3">
<h3 number="16.3.3"><span class="header-section-number">16.3.3</span> Convergence is Global</h3>
<p>A question that often arises is whether it is acceptable to monitor
convergence of only a subset of the parameters or generated
quantities. The short answer is “no,” but this is elaborated
further in this section