an>
<span class="sd">        Args:</span>
<span class="sd">            n_elements:</span>
<span class="sd">                Number of structure elements used.</span>

<span class="sd">            point_dimension: D</span>
<span class="sd">                Dimensionality of the points of which the</span>
<span class="sd">                input multi set consists of.</span>

<span class="sd">            centers_init:</span>
<span class="sd">                The initialization for the centers of the structure elem