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The International Trade Network: weighted network analysis and modelling

  • K. Bhattacharya
  • G. Mukherjee
  • J. Saramaki
  • K. Kaski
  • S. S. Manna
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    Tools of the theory of critical phenomena, namely the scaling analysis and universality, are argued to be applicable to large complex web-like network structures. Using a detailed analysis of the real data of the International Trade Network we argue that the scaled link weight distribution has an approximate log-normal distribution which remains robust over a period of 53 years. Another universal feature is observed in the power-law growth of the trade strength with gross domestic product, the exponent being similar for all countries. Using the 'rich-club' coefficient measure of the weighted networks it has been shown that the size of the rich-club controlling half of the world's trade is actually shrinking. While the gravity law is known to describe well the social interactions in the static networks of population migration, international trade, etc, here for the first time we studied a non-conservative dynamical model based on the gravity law which excellently reproduced many empirical features of the ITN.

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    File URL: http://arxiv.org/pdf/0707.4343
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    Paper provided by arXiv.org in its series Papers with number 0707.4343.

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    Date of creation: Jul 2007
    Date of revision: Mar 2008
    Publication status: Published in J. Stat. Mech. (2008) P02002
    Handle: RePEc:arx:papers:0707.4343
    Contact details of provider: Web page: http://arxiv.org/

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