nergy matrix calculation).  The aggregation tree is</span>
0006 <span class="comment">%     stored in SPIKES.HIERARCHY.TREE and the new assignments are stored in</span>
0007 <span class="comment">%     SPIKES.HIERARCHY.ASSIGNS.</span>
0008 <span class="comment">%</span>
0009 <span class="comment">%     The algorithm computes a similarity/connection matrix using the interface</span>
0010 <span class="comment">%     energy.  It then chooses the cluster pair with the highest connection</span>
0011 <span class=