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<div id="component-collapsing-in-mixture-models" class="section level2">
<h2><span class="header-section-number">19.3</span> Component Collapsing in Mixture Models</h2>
<p>It is possible for two mixture components in a mixture model to
collapse to the same values during sampling or optimization. For
example, a mixture of <span class="math inline">\(K\)</span> normals might devolve to have <span class="math inline">\(\mu_i = 