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Most probable paths in temporal weighted networks: An application to ocean transport

Ser-Giacomi, Enrico; Vasile, Ruggero; Hernandez-Garcia, Emilio; Lopez, Cristobal
Physical Review E 92, 012818 (1-6) (2015)

We consider paths in weighted and directed temporal networks, introducing tools to compute sets of paths of high probability. We quantify the relative importance of the most probable path between two nodes with respect to the whole set of paths, and to a subset of highly probable paths which incorporate most of the connection probability. These concepts are used to provide alternative definitions of betweenness centrality. We apply our formalism to a transport network describing surface flow in the Mediterranean sea. Despite the full transport dynamics is described by a very large number of paths we find that, for realistic time scales, only a very small subset of high probability paths (or even a single most probable one) is enough to characterize global connectivity properties of the network.