cles/2-130/v3">Poisot 2013</a> and defined as: <a href="latex">latex</a> \begin{equation} Q_r = 2\times\frac{W}{E}-1 %% This version returns values in 0;1 \end{equation} <a href="/latex">/latex</a> where @W = \sum_{ij} B_{ij} \delta(g_i,h_j)@ is the number of edges that are inside modules. Alternatively, @Q_r \equiv \frac{W-T}{W+T}@ where @T@ is the number of edges that are between modules.  In other words, this quantity maps the relative difference of edges that are within modules to those between modules 