lass="n">add</span><span class="p">(</span><span class="mf">1.0</span><span class="p">,</span> <span class="n">tf</span><span class="o">.</span><span class="n">math</span><span class="o">.</span><span class="n">reduce_sum</span><span class="p">(</span><span class="n">_b</span><span class="p">))))</span>
</span><span id="Sublosses.window_diff-32"><a href="#Sublosses.window_diff-32"><span class="linenos">32</span></a>    <span class="n">_aux</span> <span class="o">=</span> <span class="n">tf</span><span class