theta L_T^i (\\theta_t) - \\frac{k}{N} \\nabla_\\theta L(\\theta_t) \\right | \\right|  </span>
<span class="sd">    </span>
<span class="sd">    where,</span>
<span class="sd">    </span>
<span class="sd">        - Each gradient is computed with respect to the last layer&#39;s parameters</span>
<span class="sd">        - :math:`\\theta_t` are the model parameters at selection round :math:`t`</span>
<span class="sd">        - :math:`X_t` is the queried set of points to label at selection round :math:`t`</sp