| 来源类型 | FEEM working papers "Note di lavoro" series |
| 规范类型 | 论文 |
| Economics: An Emerging Small World? | |
| Sanjeev Goyal; Marco van der Leij; José Luis Moraga-González | |
| 发表日期 | 2004 |
| 出处 | Climate Change and Sustainable Development |
| 出版年 | 2004 |
| 语种 | 英语 |
| 摘要 | The structures of social interaction affect individual behavior and economic performance in important ways. This leads us to ask: does the architecture of social interaction exhibit particular patterns and are these patterns stable over time? We examine interaction among economists by looking at the evolution of co-authorship relations over a thirty year period. We find that in the 1970's this world was quite fragmented with the largest interconnected group { the giant component { covering only 15% of the population. However, by the 1990's economics was much more integrated, with the giant component covering over 40% of the population. The average distance between individuals was small and declined over the period, leading us to conclude that economics is an emerging small world. A crucial stable feature of the network over this period is the existence of several stars (economists with many co-authors each of whom have few collaborators and rarely work among themselves). The world of economics is thus a collection of inter-linked stars. We also find that a growth in the average number of co-authors is the main reason behind the growth in the giant component and the fall in average distances within it. The second part of the paper develops a simple theoretical model of collaboration in economics. We find that an unequal distribution of collaborations and inter- linked stars arise naturally in this environment. Falling costs of communication and increasing credit for joint research lead to greater co-authorship and this supports a larger giant component. |
| 特色分类 | C7,A11 |
| 关键词 | Small worlds,Networks,Global village |
| URL | https://www.feem.it/en/publications/feem-working-papers-note-di-lavoro-series/economics-an-emerging-small-world/ |
| 来源智库 | Fondazione Eni Enrico Mattei (Italy) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/117035 |
| 推荐引用方式 GB/T 7714 | Sanjeev Goyal,Marco van der Leij,José Luis Moraga-González. Economics: An Emerging Small World?. 2004. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| NDL2004-084.pdf（832KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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