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. 2014 Dec 30;9(12):e116046. doi: 10.1371/journal.pone.0116046

Figure 1. Members of a party show cohesion if the links connecting them are stronger than the ties with other deputies.

Figure 1

We capture the former by the intra-cluster density Inline graphic and the latter by the inter-cluster density Inline graphic. The party shows high cohesion when the two lie considerably higher and lower respectively copared to the average link density of the whole parliament Inline graphic.