If ki is the number of links of node i to other nodes in its module si, is the average of k over all the nodes in si, and is the standard deviation of k in si, then:(3)is so-called Z-score (z ≥2.5 determines hub nodes, and z <2.5 non-hubs nodes), which measures how well-connected node i is to other nodes in the module.
![[This page as RDF]](http://data.gesis.org/somesci/static/rdf-icon.gif){kind=icon}