<p>We have multiple synonyms for full-form names and their abbreviations like <a href="https://stats.stackexchange.com/questions/tagged/item-response-theory" class="post-tag" title="show questions tagged &#39;item-response-theory&#39;" rel="tag">item-response-theory</a> and <a href="https://stats.stackexchange.com/questions/tagged/irt" class="post-tag" title="show questions tagged &#39;irt&#39;" rel="tag">irt</a>, or <a href="https://stats.stackexchange.com/questions/tagged/stochastic-gradient-descent" class="post-tag" title="show questions tagged &#39;stochastic-gradient-descent&#39;" rel="tag">stochastic-gradient-descent</a> and <a href="https://stats.stackexchange.com/questions/tagged/sgd" class="post-tag" title="show questions tagged &#39;sgd&#39;" rel="tag">sgd</a>. What should be the basic form: full length or abbreviated? The labels can be easily swapped.</p>
