Fig. 5
From: Internal dynamics of patent reference networks using the Bray–Curtis dissimilarity measure
Log-probability, or log(relative frequency), histogram of the ΔdBC changes in dissimilarities between categories in the patent database from the q1 to the q2 quarter-years. The figure shows that the further away two categories are in the BC-space, the more probable that they move closer to each other. So far this is expectable, but the linearity between the logarithm of the relative frequency of a change in the BC-dissimilarity and the BC-distance itself is surprising