Preferential Attachment, Homophily, and the Structure of International Networks, 1816-2003

被引:56
作者
Maoz, Zeev [1 ,2 ]
机构
[1] Univ Calif Davis, Davis, CA 95616 USA
[2] Interdisciplinary Ctr, Herzliyya, Israel
关键词
alliances; homophily; international conflict; international networks; preferential attachment; power-law; trade; DEMOCRATIC PEACE; TRADE; ENEMY; MODEL; CIVILIZATIONS; CULTURE; FRIEND; CLASH;
D O I
10.1177/0738894212443344
中图分类号
D81 [国际关系];
学科分类号
030207 ;
摘要
This study examines the extent to which network formation processes in international relations parallel models that characterize the formation processes of physical, biological, and social networks. I introduce two influential models from networks sciences: Preferential Attachment (PA) models state that the probability of a new node forming a link with an existing node is a function of the latter node's centrality. Networks that form through a PA process tend to have a power-law degree distribution. The Homophily (HO) model states that nodes tend to attach to similar other nodes. Such networks evolve into a set of homogenous subgroups. An analysis of alliance and trade networks over the 1816 (1870)-2003 period reveals strong evidence that alliance networks are affected by homophily processes. Trade networks form via a preferential attachment process. The tendency of international networks to evolve according to such processes increases over time. I discuss the implications of these results.
引用
收藏
页码:341 / 369
页数:29
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