Fig. 5. Flow stability clustering of face-to-face contacts in a primary school.

(A and B) Alluvial diagram representing the forward and backward partitions at two different scales corresponding to RW rates of (1 hour)⁻¹ and (63 s)⁻¹, respectively. (C and D) NVI and number of clusters of the best partition for different values of the characteristic waiting time. (E) Static clustering of hourly aggregated interactions using standard modularity optimization. (F and G) NVI and number of clusters found with the generalized multilayer modularity (6) as a function of the resolution parameter. (H) Multilayer partition of the network corresponding to the minima in NVI in (F).