Improving the performance of random coefficients demand models: the role of optimal instruments

Mathias Reynaert and Frank Verboven

Working Papers of Department of Economics, Leuven from KU Leuven, Faculty of Economics and Business (FEB), Department of Economics, Leuven

Abstract: We shed new light on the performance of Berry, Levinsohn and Pakes’ (1995) GMM estimator of the aggregate random coefficient logit model. Based on an extensive Monte Carlo study, we show that the use of Chamberlain’s (1987) optimal instruments overcomes most of the problems that have recently been documented with standard, non-optimal instruments. Optimal instruments reduce small sample bias, but prove even more powerful in increasing the estimator’s efficiency and stability. Other recent methodological advances (MPEC, polynomial-based integration of the market shares) greatly improve computational speed, but they are only successful in terms of bias and efficiency when combined with optimal instruments.

Date: 2012-06
New Economics Papers: this item is included in nep-ecm
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Related works:
Journal Article: Improving the performance of random coefficients demand models: The role of optimal instruments (2014)
Working Paper: Improving the performance of random coefficients demand models: The role of optimal instruments (2012)
Working Paper: Improving the Performance of Random Coefficients Demand Models: the Role of Optimal Instruments (2012)
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Persistent link: https://EconPapers.repec.org/RePEc:ete:ceswps:ces12.07

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