| 来源类型 | Working Paper |
| 规范类型 | 报告 |
| DOI | 10.3386/w15641 |
| 来源ID | Working Paper 15641 |
| Identification in Differentiated Products Markets Using Market Level Data | |
| Steven T. Berry; Philip A. Haile | |
| 发表日期 | 2010-01-07 |
| 出版年 | 2010 |
| 语种 | 英语 |
| 摘要 | We consider nonparametric identification in models of differentiated products markets, using only market level observables. On the demand side we consider a nonparametric random utility model nesting random coefficients discrete choice models widely used in applied work. We allow for product/market-specific unobservables, endogenous product characteristics (e.g., prices), and high-dimensional taste shocks with arbitrary correlation and heteroskedasticity. On the supply side we specify marginal costs nonparametrically, allow for unobserved firm heterogeneity, and nest a variety of equilibrium oligopoly models. We pursue two approaches to identification. One relies on instrumental variables conditions used previously to demonstrate identification in a nonparametric regression framework. With this approach we can show identification of the demand side without reference to a particular supply model. Adding the supply side allows identification of firms' marginal costs as well. Our second approach, more closely linked to classical identification arguments for supply and demand models, employs a change of variables approach. This leads to constructive identification results relying on exclusion and support conditions. Our results lead to a testable restriction that provides the first general formalization of Bresnahan's (1982) intuition for empirically discriminating between alternative models of oligopoly competition. |
| 主题 | Econometrics ; Estimation Methods ; Industrial Organization |
| URL | https://www.nber.org/papers/w15641 |
| 来源智库 | National Bureau of Economic Research (United States) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/573316 |
| 推荐引用方式 GB/T 7714 | Steven T. Berry,Philip A. Haile. Identification in Differentiated Products Markets Using Market Level Data. 2010. |
| 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 | ||
| w15641.pdf（958KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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