2.4 Community detection
Communities are sets of nodes (modules) that are densely interconnected compared to other nodes in the network, sharing common properties. This definition leads to a function called modularity, used to describe the quality of the partitions and the modular structure of the network. We computed the optimal partition from the network of premises summarised by parishes using the simulated annealing (SA) algorithm (Grisi-Filho et al., 2013) based on LinkRank (Kim et al., 2010) derived from Google’s PageRank (Page and Brin, 1998).