">torch</span><span class="o">.</span><span class="n">mul</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">not_dummy_points</span><span class="p">)</span>
        <span class="n">x</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">view</span><span class="p">(</span><span class="n">batch_size</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">n_elements</span><span class