mbda</span></a>
<a class="sourceLine" id="cb26-9" title="9">                           <span class="dt">alpha_cov_form =</span> <span class="st">&quot;pairwise&quot;</span>, <span class="co"># effect of covariates over alpha</span></a>
<a class="sourceLine" id="cb26-10" title="10">                           <span class="dt">initial_values =</span> <span class="kw">list</span>(<span class="dt">lambda =</span> <span class="dv">1</span>,</a>
<a class="sourceLine" id="cb26-11" title="11">                       