| 来源类型 | Working Paper
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| 规范类型 | 报告
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| DOI | 10.3386/w22186
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| 来源ID | Working Paper 22186
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| Homophily and Transitivity in Dynamic Network Formation |
| Bryan S. Graham
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| 发表日期 | 2016-04-25
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| 出版年 | 2016
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| 语种 | 英语
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| 摘要 | In social and economic networks linked agents often share additional links in common. There are two competing explanations for this phenomenon. First, agents may have a structural taste for transitive links -- the returns to linking may be higher if two agents share links in common. Second, agents may assortatively match on unobserved attributes, a process called homophily. I study parameter identifiability in a simple model of dynamic network formation with both effects. Agents form, maintain, and sever links over time in order to maximize utility. The return to linking may be higher if agents share friends in common. A pair-specific utility component allows for arbitrary homophily on time-invariant agent attributes. I derive conditions under which it is possible to detect the presence of a taste for transitivity in the presence of assortative matching on unobservables. I leave the joint distribution of the initial network and the pair-specific utility component, a very high dimensional object, unrestricted. The analysis is of the `fixed effects' type. The identification result is constructive, suggesting an analog estimator, whose single large network properties I characterize. |
| 主题 | Econometrics
; Estimation Methods
; Microeconomics
; Economics of Information
|
| URL | https://www.nber.org/papers/w22186
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| 来源智库 | National Bureau of Economic Research (United States)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/579860
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推荐引用方式
GB/T 7714 |
Bryan S. Graham. Homophily and Transitivity in Dynamic Network Formation. 2016.
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文件名：
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w22186.pdf
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格式：
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Adobe PDF
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