Patterns of dominant flows in the world trade web |
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Authors: | M Ángeles Serrano Marián Boguñá Alessandro Vespignani |
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Institution: | (1) Institute of Theoretical Physics, LBS, SB, EPFL, 1015 Lausanne, Switzerland;(2) Departament de Física Fonamental, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain;(3) School of Informatics, Indiana University, Eigenmann Hall, 1900 East Tenth Street, Bloomington, IN 47406, USA;(4) Complex Network Lagrange Laboratory (CNLL), Institute for Scientific Interchange (ISI), Torino, 10133, Italy |
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Abstract: | The large-scale organization of the world economies is exhibiting increasing levels of local heterogeneity and global interdependency.
Understanding the relation between local and global features calls for analytical tools able to uncover the global emerging
organization of the international trade network. Here we analyze the world network of bilateral trade imbalances and characterize
its overall flux organization, unraveling local and global high-flux pathways that define the backbone of the trade system.
We develop a general procedure capable to progressively filter out in a consistent and quantitative way the dominant trade
channels. This procedure is completely general and can be applied to any weighted network to detect the underlying structure
of transport flows. The trade fluxes properties of the world trade web determine a ranking of trade partnerships that highlights
global interdependencies, providing information not accessible by simple local analysis. The present work provides new quantitative
tools for a dynamical approach to the propagation of economic crises. |
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