Table 8.

Mean similarity of ARs to other ARs either in the same cluster (1 vs. 1 or 2 vs. 2) or in the other cluster (1 vs. 2) under the different schemes. Cluster 1 contains ARs that are very dissimilar to each other while Cluster 2 contains ARs that are very similar to each other.

Mean similarity
1 vs. 1 1 vs. 2 2 vs. 2
SVD, Hellinger 0.29 0.42 0.87
NMF, Hellinger 0.30 0.42 0.88

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