Figure 4

Comparison of in- and out- cluster densities. In- and out-densities measured on 12 clusters generated by running the clustering algorithm on the cryptocurrencies’ tags. Blue circles represent the different clusters (the size of the circle is related to the cluster’s size) and the text indicates the most relevant tags per cluster. The dashed red line is the diagonal, the red-shaded area represents the in- and out-cluster density distribution for the randomised clusters. The clusters identified by the algorithm fall outside this area; thus their in- and out-densities are not compatible with the random benchmark we tested