<p>The following two tags look synonymous:</p>

<ul>
<li><a href="https://stats.stackexchange.com/questions/tagged/expectation-maximization">https://stats.stackexchange.com/questions/tagged/expectation-maximization</a></li>
<li><a href="https://stats.stackexchange.com/questions/tagged/e-m">https://stats.stackexchange.com/questions/tagged/e-m</a></li>
</ul>
