an class="p">(</span><span class="n">batch_size</span><span class="p">,</span> <span class="p">))</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="n">batch_size</span><span class="p">,</span> <span class="n">nu</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="mi">1</span><span class="p">),</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1<