-</span><span class="mi">1</span><span class="p">)</span>
            <span class="k">else</span><span class="p">:</span>
                <span class="n">A_i</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">cat</span><span class="p">((</span><span class="n">A_i</span><span class="p">,</span> <span class="n">A</span><span class="p">[:,</span> <span class="n">index</span><span class="p">]</span><span class="o">.</span><span class="n">view</span><span class="p