Demand Estimation with Machine Learning and Model Combination

Medientyp: E-Book

Titel: Demand Estimation with Machine Learning and Model Combination

Beteiligte: Bajari, Patrick [Verfasser:in]; Nekipelov, Denis [Sonstige Person, Familie und Körperschaft]; Yang, Miaoyu [Sonstige Person, Familie und Körperschaft]; Ryan, Stephen P. [Sonstige Person, Familie und Körperschaft]

Körperschaft: National Bureau of Economic Research

Erschienen: Cambridge, Mass: National Bureau of Economic Research, February 2015

Umfang: 1 Online-Ressource

Sprache: Englisch

DOI: 10.3386/w20955

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Reproduktionsnotiz: Hardcopy version available to institutional subscribers

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Anmerkungen: Mode of access: World Wide Web
System requirements: Adobe [Acrobat] Reader required for PDF files

Beschreibung: We survey and apply several techniques from the statistical and computer science literature to the problem of demand estimation. We derive novel asymptotic properties for several of these models. To improve out-of-sample prediction accuracy and obtain parametric rates of convergence, we propose a method of combining the underlying models via linear regression. Our method has several appealing features: it is robust to a large number of potentially-collinear regressors; it scales easily to very large data sets; the machine learning methods combine model selection and estimation; and the method can flexibly approximate arbitrary non-linear functions, even when the set of regressors is high dimensional and we also allow for fixed effects. We illustrate our method using a standard scanner panel data set to estimate promotional lift and find that our estimates are considerably more accurate in out of sample predictions of demand than some commonly used alternatives. While demand estimation is our motivating application, these methods are likely to be useful in other microeconometric problems

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