Fig. 2
From: Dietary networks identified by Gaussian graphical model and general and abdominal obesity in adults
Detailed characteristics of three dietary networks identified by Gaussian graphical model. Nodes represent food groups. Edges represent conditional dependencies between food groups revealed by partial correlation coefficients. The absence of an edge between 2 food groups indicates conditional independence between them. Continuous edges show positive partial correlations while broken edges show negative partial correlations. Line thickness is proportional to the strength of the correlations between food groups. Communities are represented by matching node and edge colors. Centrality indicates importance of a food group based on the number of communities it belongs to