_diff</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">tf</span><span class="o">.</span><span class="n">Tensor</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">tf</span><span class="o">.</span><span class="n">Tensor</span><span class="p">,</span> <span class="n">th</span><span class="o">=</span><span class="mf">0.5</span><span class="p">):</span>
</span><span id="Sublosses.window_diff-15"><a href="#Sublosses.window_