Figure 3

Distributions of collaborators/papers per author. The panels show the distributions counted in PNAS 1999–2013 (red plots), and those counted in the papers of each science category (blue diamonds). Fitting distributions (purple curves) are mixtures of a generalized Poisson distribution and a power-law distribution. Fitting parameters are listed in Table 4. The regions “G-P”, “C-O”, “P-L” stand for generalized Poisson, cross-over and power-law respectively