torch</span><span class="o">.</span><span class="n">Tensor</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">])</span> <span class="o">/</span> <span class="n">np</span><span class="o">.</span><span class="n">sqrt</span><span class="p">(</span><span class="mi">2</span><span class="p">))</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">b_2</span> <span class="o">=</span> <span class="p">(</span><span cla