12 P. Garc´ıa-S´anchez et al.
the set, or the amount of beast cards, weapon cards, or combo cards, to cite some
examples. This information could better describe the decks for their analysis.
Moreover, other clustering algorithms such as Density-Based Spatial Clus-
tering of Applications w ith Noise [6] can partially solve the issue of deciding a
priori the number of clusters; nevertheless, they feature different parameters to
be tuned.
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