 poi first, nuisance second</span>
        <span class="n">mu</span><span class="p">,</span> <span class="n">nu</span> <span class="o">=</span> <span class="n">param</span><span class="p">[:,</span> <span class="p">:</span><span class="bp">self</span><span class="o">.</span><span class="n">poi_dim</span><span class="p">],</span> <span class="n">param</span><span class="p">[:,</span> <span class="bp">self</span><span class="o">.</span><span class="n">poi_dim</span><span class="p">:]</span>
        <span clas