pan class="math inline">\(\theta_k \geq 0\)</span> for <span class="math inline">\(k \in \{1,\ldots,K\}\)</span> and <span class="math inline">\(\sum_{k = 1}^K \theta_k = 1\)</span>.</p>
<section id="dirichlet-distribution" class="level2">
<h2 class="anchored" data-anchor-id="dirichlet-distribution">Dirichlet distribution</h2>
<section id="probability-density-function" class="level3">
<h3 class="anchored" data-anchor-id="probability-density-function">Probability density function</h3>
<p>If <span class="math