weighted complex networks;
world trade web;
econophysics;
D O I:
10.1016/j.physa.2008.01.050
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
This paper studies the topological properties of the World Trade Web (WTW) and its evolution over time by employing a weighted-network analysis. We show that the WTW, viewed as a weighted network, displays statistical features that are very different from those obtained by using a traditional binary-network approach. In particular, we find that: (i) the majority of existing links are associated to weak trade relationships; (ii) the weighted WTW is only weakly disassortative; (iii) countries holding more intense trade relationships are more clustered. (C) 2008 Elsevier B.V. All rights reserved.