Fig. 2
From: Identifying fabricated networks within authorship-for-sale enterprises
Development of the unusual author cohort as a percentage of all Stage I and II researchers by year. The two areas are overlapping and not cumulative. The area between the top of the light blue region and the x-axis represents all unusual Stage I and II researchers as a percentage of all Stage I and Stage II researchers. The dark blue area shows just those that are part of the largest connected component of the unusual co-author network defined by our model.
