Fig. 6

The possible diffusion processes following the career trajectories originating from the University of Cambridge. The thickness of an edge represents the probability to observe that move. The color of an edge is blue when it represents a move going back to the source node, i.e., the University of Cambridge, otherwise the color is orange. The diffusion process describes the probability to find a scientists in a given location after t moves starting from the source node. On the left side of the plot a, the empirical diffusion (i.e., actual moves) is shown. On the right side of the plot b, the Markovian diffusion is shown, i.e., the diffusion we would expect if career trajectories had no temporal correlations. For visualization purposes, the 50% most common career trajectories have been used for this figure