Department of Economics
University College London
London WC1E 6BT
Information about this author at RePEc
NBER Working Papers and Publications
|August 2009||Nonparametric Identification and Estimation of Nonadditive Hedonic Models|
with James J. Heckman, Rosa L. Matzkin: w15226
This paper studies the identification and estimation of preferences and technologies in equilibrium hedonic models. In it, we identify nonparametric structural relationships with nonadditive heterogeneity. We determine what features of hedonic models can be identified from equilibrium observations in a single market under weak assumptions about the available information. We then consider use of additional information about structural functions and heterogeneity distributions. Separability conditions facilitate identification of consumer marginal utility and firm marginal product functions. We also consider how identification is facilitated using multimarket data.
Published: James J. Heckman & Rosa L. Matzkin & Lars Nesheim, 2010.
"Nonparametric Identification and Estimation of Nonadditive Hedonic Models,"
Econometric Society, vol. 78(5), pages 1569-1591, 09.
citation courtesy of
|August 2003||Identification and Estimation of Hedonic Models|
with Ivar Ekeland, James J. Heckman: w9910
This paper considers the identification and estimation of hedonic models. We establish that in an additive version of the hedonic model, technology and preferences are generically identified up to affine transformations from data on demand and supply in a single hedonic market. For a very general parametric structure, preferences and technology are fully identified. This is true under a strong assumption of statistical independence of the error term. It is also true under the weaker assumption of mean independence of the error term. Much of the confusion in the empirical literature that claims that hedonic models estimated on data from a single market are fundamentally underidentified is based on linearizations that do not use all of the information in the model. The exact economic model t...
Published: Ekeland, Ivar, James J. Heckman and Lars Nesheim. "Identification And Estimation Of Hedonic Models," Journal of Political Economy, 2004, v112(2,Part2), S60-S109. citation courtesy of
|Simulation and Estimation of Nonaddative Hedonic Models|
with James J. Heckman, Rosa Matzkin: w9895
Making use of restrictions imposed by equilibrium, theoretical progress has been made on the nonparametric and semiparametric estimation and identification of scalar additive hedonic models (Ekeland, Heckman, and Nesheim, 2002) and scalar nonadditive hedonic models (Heckman, Matzkin, and Nesheim, 2002). However, little is known about the practical aspects of estimating such models or of the characteristics of equilibrium in such models. This paper presents computational and analytical results that fill some of these gaps. We simulate and estimate examples of equilibrium in the additive hedonic models and provide evidence on the performance of several estimation techniques. We also simulate examples of equilibria in nonadditive models and provide evidence on the performance of the nonadditi...
Published: Kehoe, T., T.N. Srinivasan, J. Whalley (eds.) Frontiers in Applied General Equilibrium Modeling. Cambridge University Press, 2004.