英文标题：
《Identifying Multidiemsnional Adverse Selection Models》
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作者：
Gaurab Aryal
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最新提交年份：
2015
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英文摘要：
In this paper, I study the nonparametric identification of a multidimensional adverse selection model. In particular, I consider the screening model of Rochet and Chone (1998), where products have multiple characteristics and consumers have private information about their multidimensional taste for these characteristics, and determine the data features and additional condition(s) that identify model parameters. The parameters include the nonparametric joint density of consumer taste, the cost function, and the utility function, and the data includes individual-level data on choices and prices paid from one market. When the utility is nonlinear in product characteristics, however, data from one market is not enough, but with data from at least two markets, or over two periods, with different marginal prices is sufficient for identification as long as these price differences are due to exogenous (and binary) changes in cost and not because the two markets are inherently different. I also derive all testable conditions for a joint distribution of observed choices and prices to be rationalized by a model of multidimensional adverse selection.
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中文摘要：
本文研究了多维逆向选择模型的非参数辨识问题。特别是，我考虑了Rochet和Chone（1998）的筛选模型，其中产品具有多种特征，消费者对这些特征的多维品味拥有私人信息，并确定了识别模型参数的数据特征和附加条件。这些参数包括消费者口味的非参数联合密度、成本函数和效用函数，数据包括来自一个市场的选择和价格的个人层面数据。然而，当效用在产品特性上是非线性的时，来自一个市场的数据是不够的，但如果来自至少两个市场或两个时期的数据具有不同的边际价格，就足以进行识别，只要这些价格差异是由于成本的外生（和二元）变化，而不是因为两个市场本身不同。我还推导了观察到的选择和价格的联合分布的所有可测试条件，以便通过多维逆向选择模型合理化。
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分类信息：

一级分类：Quantitative Finance 数量金融学
二级分类：Economics 经济学
分类描述：q-fin.EC is an alias for econ.GN. Economics, including micro and macro economics, international economics, theory of the firm, labor economics, and other economic topics outside finance
q-fin.ec是econ.gn的别名。经济学，包括微观和宏观经济学、国际经济学、企业理论、劳动经济学和其他金融以外的经济专题
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