A Gibbs Sampler for Mixed Logit Analysis of Differentiated Product Markets Using Aggregate Data

Charles J. Romeo

No 106, Computing in Economics and Finance 2001 from Society for Computational Economics

Abstract: Berry, Levinsohn, and Pakes (1995) developed an estimator for an equilibium model of differentiated products markets using aggregate data, without assuming the existence of a representative agent, or imposing prior restrictions on elasticities. Their estimator though, was computationally burdensome as it required an estimate of aggregate demand in each iteration in search of the mode of their GMM objective function. By imposing additional distributional assumptions for the errors in the demand and supply relations, we show how to define a Gibbs sampler that solves the same problem while avoiding problem of estimating aggregate demand. A comparison of the estimators indicates that this should substantially reduce the computational burden, thereby making study of this important class of problems accessible to a wider group of researchers.

Keywords: Gibbs Sampler; Mixed Logit; Differentiated Product Markets (search for similar items in EconPapers)
JEL-codes: C11 C15 C33 L1 (search for similar items in EconPapers)
Date: 2001-04-01
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Persistent link: https://EconPapers.repec.org/RePEc:sce:scecf1:106

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