‘Clumpiness’ mixing in complex networks

@article{Estrada2008ClumpinessMI,
  title={‘Clumpiness’ mixing in complex networks},
  author={Ernesto Estrada and Naomichi Hatano and Amauri Guti{\'e}rrez},
  journal={Journal of Statistical Mechanics: Theory and Experiment},
  year={2008},
  volume={2008},
  pages={P03008}
}
Three measures of clumpiness of complex networks are introduced. The measures quantify how most central nodes of a network are clumped together. The assortativity coefficient defined in a previous study measures a similar characteristic, but accounts only for the clumpiness of the central nodes that are directly connected to each other. The clumpiness coefficient defined in the present paper also takes into account the cases where central nodes are separated by a few links. The definition is… 

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