INVESTIGADORES
ERMANN Leonardo
artículos
Título:
Google matrix of the world trade network
Autor/es:
LEONARDO ERMANN; DIMA L. SHEPELYANSKY
Revista:
ACTA PHYSICA POLONICA A
Editorial:
POLISH ACAD SCIENCES INST PHYSICS
Referencias:
Lugar: Varsovia; Año: 2011 vol. 120 p. 158 - 171
ISSN:
0587-4246
Resumen:
Using the United Nations Commodity Trade Statistics Database we construct the Google matrix of the worldtrade network and analyze its properties for various trade commodities for all countries and all available yearsfrom 1962 to 2009. The trade ows on this network are classied with the help of PageRank and CheiRankalgorithms developed for the World Wide Web and other large scale directed networks. For the world trade thisranking treats all countries on equal democratic grounds independent of country richness. Still this method putsat the top a group of industrially developed countries for trade in all commodities. Our study establishes theexistence of two solid state like domains of rich and poor countries which remain stable in time, while the majorityof countries are shown to be in a gas like phase with strong rank uctuations. A simple random matrix modelprovides a good description of statistical distribution of countries in two-dimensional rank plane. The comparisonwith usual ranking by export and import highlights new features and possibilities of our approach.