Figure 13.

Quality of the clustering results of CCC at different levels k for the similarity threshold t = 0.46. Only for k = 5 the same clustering as the reference clustering is computed. It implies that using the CCC algorithm it would be possible to obtain the same clustering as the reference clustering. However, that would require the selection of one specific, i.e., the optimal level of k. But without prior knowledge of the reference clustering it is not possible to determine this optimal level.