The geometric nature of weights in real complex networks

Antoine Allard, M. Ángeles Serrano, Guillermo García-Pérez and Marián Boguñá ()
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Antoine Allard: Departament de Física de la Matèria Condensada, Universitat de Barcelona
M. Ángeles Serrano: Departament de Física de la Matèria Condensada, Universitat de Barcelona
Guillermo García-Pérez: Departament de Física de la Matèria Condensada, Universitat de Barcelona
Marián Boguñá: Departament de Física de la Matèria Condensada, Universitat de Barcelona

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract The topology of many real complex networks has been conjectured to be embedded in hidden metric spaces, where distances between nodes encode their likelihood of being connected. Besides of providing a natural geometrical interpretation of their complex topologies, this hypothesis yields the recipe for sustainable Internet’s routing protocols, sheds light on the hierarchical organization of biochemical pathways in cells, and allows for a rich characterization of the evolution of international trade. Here we present empirical evidence that this geometric interpretation also applies to the weighted organization of real complex networks. We introduce a very general and versatile model and use it to quantify the level of coupling between their topology, their weights and an underlying metric space. Our model accurately reproduces both their topology and their weights, and our results suggest that the formation of connections and the assignment of their magnitude are ruled by different processes.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14103

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DOI: 10.1038/ncomms14103

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