Fig. 1

Community structure within the co-inventor network. The upper (lower) panel indicates communities in the largest connected component of the co-inventor network identified by the Louvain (Infomap) algorithm using different colors (but with some colors being reused in the lower panel due to the overall large number of communities yielded by Infomap). Note how certain groups of communities identified as separate by Infomap are clustered together by Louvain. The size of the circle indicating a node is proportional to the number of edges attached to that node. Images created using Gephi (Bastian et al. 2009)