n>
</span><span id="Sublosses.window_diff-31"><a href="#Sublosses.window_diff-31"><span class="linenos">31</span></a>    <span class="n">_aux</span> <span class="o">=</span> <span class="n">tf</span><span class="o">.</span><span class="n">math</span><span class="o">.</span><span class="n">multiply</span><span class="p">(</span><span class="mf">2.0</span><span class="p">,</span> <span class="p">(</span><span class="n">tf</span><span class="o">.</span><span class="n">math</span><span class="o">.</span><span c