Demand Estimation with Heterogeneous Consumers and Unobserved Product Characteristics: A Hedonic Approach
重新审视了Gorman-Lancaster风格的享乐需求模型，推广了Rosen的第一阶段以处理未观测产品特征和非可分离定价函数，并采用半参数方法估计消费者效用参数，适用于产品数量较少时的需求分析。
We reconsider the identification and estimation of Gorman-Lancaster-style hedonic models of demand for differentiated products in the spirit of Sherwin Rosen. We generalize Rosen's first stage to account for product characteristics that are not observed and to allow the hedonic pricing function to have a general nonseparable form. We take an alternative semiparametric approach to Rosen's second stage in which we assume that the parametric form of utility is known, but we place no restrictions on the aggregate distribution of utility parameters. If there are only a small number of products, we show how to construct bounds on individuals' utility parameters, as well as other economic objects such as aggregate demand and consumer surplus. We apply our methods to estimating the demand for personal computers.