lization is achieved by dividing each</span>
<span class="sd">                kernel element :math:`K_{ij}` with the factor</span>
<span class="sd">                :math:`\sqrt{K_{ii}K_{jj}}`</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">metric</span> <span class="o">=</span> <span class="n">metric</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">gamma</span> <span class="o">=</span> <sp