The international-trade network: gravity equations and topological properties |
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Authors: | Giorgio Fagiolo |
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Institution: | 1.Sant’Anna School of Advanced Studies,Laboratory of Economics and Management,Pisa,Italy |
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Abstract: | This paper begins to explore the determinants of the topological properties of the international-trade network (ITN). We fit
bilateral-trade flows using a standard gravity equation to build a “residual” ITN where trade-link weights are depurated from
geographical distance, size, border effects, trade agreements, and so on. We then compare the topological properties of the
original and residual ITNs. We find that the residual ITN displays, unlike the original one, marked signatures of a complex
system, and is characterized by a very different topological architecture. Whereas the original ITN is geographically clustered
and organized around a few large-sized hubs, the residual ITN displays many small-sized but trade-oriented countries that,
independently of their geographical position, either play the role of local hubs or attract large and rich countries in relatively
complex trade-interaction patterns. |
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Keywords: | |
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