Fig. 1From: Theory of preference modelling for communities in scale-free networksStrong and Weak Community. An example of a strong and weak community network. The community in green is a weak community as it strictly violates the definition of strong community for each node. However the community in red can be viewed as a strong community if node 6 is ignored. In the case of the purple community, all the nodes strictly follow the definition of a strong community from 1Back to article page