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Testing and Identifying Substitution and Complementarity Patterns

Rui Wang

arXiv 3 Apr 2023 · Econometrics

arXiv:2304.00678 · PDF · DOI · OpenAlex · Extracted main text

Abstract

This paper studies semiparametric identification of substitution and complementarity patterns between two goods using a panel multinomial choice model with bundles. The model allows the two goods to be either substitutes or complements and admits heterogeneous complementarity through observed characteristics. I first provide testable implications for the complementarity relationship between goods. I then characterize the sharp identified set for the model parameters and provide sufficient conditions for point identification. The identification analysis accommodates endogenous covariates through flexible dependence structures between observed characteristics and fixed effects while placing no distributional assumptions on unobserved preference shocks. My method is shown to perform more robustly than the parametric method through Monte Carlo simulations. As an extension, I allow for unobserved heterogeneity in the complementarity, investigate scenarios involving more than two goods, and study a class of nonseparable utility functions.

Citation extraction

29
references
50
in-text mentions
29
distinct cited
0
self-citations
11,786
main-text words

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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1X. Shi, M. Shum, and W. Song (2018) Estimating semi-parametric panel multinomial choice models using cyclic monotonicity1.00063100%
2A. Pakes and J. Porter (2022) Moment inequalities for multinomial choice with fixed effects0.9285480%
3M. Gentzkow (2007) Valuing new goods in a model with complementarity: Online newspapers0.87462100%
4R. Allen and J. Rehbeck (2022) Latent complementarity in bundles models0.73732100%
5C. F. Manski (1987) Semiparametric analysis of random effects linear models from binary panel data0.73732100%
6W. Y. Gao and M. Li (2020) Robust semiparametric estimation in panel multinomial choice models0.5113233%
7B. E. Honoré and A. Lewbel (2002) Semiparametric binary choice panel data models without strictly exogeneous regressors0.51121100%
8D. W. Andrews and X. Shi (2013) Inference based on conditional moment inequalities0.40511100%
9T. B. Armstrong (2015) Asymptotically exact inference in conditional moment inequality models0.40511100%
10S. Berry, J. Levinsohn, and A. Pakes (1995) Automobile prices in market equilibrium0.40511100%

Showing the top 10 of 29 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Semiparametric Discrete Choice Models for Bundles0.73732
2Semiparametric Discrete Choice Models for Bundles0.58531
3Bundle Choice Model with Endogenous Regressors: An Application to Soda Tax0.58531