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<span class="sd">                Sinkhorn-algorithm.</span>
<span class="sd">            metric(string or callable): The pairwise metric used for</span>
<span class="sd">                calculating the local similarity. Accepts any of the sklearn</span>
<span class="sd">                pairwise metric strings (e.g. &quot;linear&quot;, &quot;rbf&quot;, &quot;laplacian&quot;,</span>
<span class="sd">                &quot;polynomial&quot;) or a custom callable. A callable should accept</span>
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