</div>
<div id="partially-known-parameters.section" class="section level2">
<h2><span class="header-section-number">3.2</span> Partially Known Parameters</h2>
<p>In some situations, such as when a multivariate probability function
has partially observed outcomes or parameters, it will be necessary to
create a vector mixing known (data) and unknown (parameter) values.
This can be done in Stan by creating a vector or array in the
<code>transformed parameters</code> block and assigning to it.</p>
<p>The follow