               (keyword arguments) for kernel function passed as callable</span>
<span class="sd">                object.</span>
<span class="sd">            normalize_kernel(boolean): Whether to normalize the final global</span>
<span class="sd">                similarity kernel. The normalization 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">     