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arXiv 0908.2086q-fin.GNphysics.soc-phq-fin.TR
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国际贸易网络:引力方程与拓扑性质

The International-Trade Network: Gravity Equations and Topological Properties

Giorgio Fagiolo

摘要:

本文首先探讨了国际贸易网络拓扑性质的决定因素.我们使用标准的引力方程拟合双边贸易流,构建一个“剩余”ITN,其中贸易链接权重从地理距离,大小,边界效应,贸易协定等中去除,然后我们比较原始和剩余ITN的拓扑性质。我们发现,残留的ITN显示,不同于原来的一个,标记签名的一个复杂的系统,其特征在于一个非常不同的拓扑结构。最初的国际贸易网络在地理上是围绕着几个大型枢纽集中和组织起来的,而剩余的国际贸易网络则显示出许多小型但以贸易为导向的国家,这些国家无论其地理位置如何,要么发挥着当地枢纽的作用,要么以相对复杂的贸易互动模式吸引着大国和富国。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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