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Linear Demand Systems are Consistent with Discrete Choice

Afonso Rodrigues · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.13785 · cited by 0 works (OpenAlex) · open-access PDF

Japanese

総合的線形需要システムは、さまざまな選択をする異なる消費者の人口によってマイクロベース化することができる。それらはまた、収入効果を組み込むために拡張することができる。私はこれらの結果を証明し、市場レベルのデータのみを使用してこのクラスのモデルを構造的に評価する方法を示します。消費者の好みの分布は、合計条件のみで角のソリューションを規律することによって回復します。このアプローチは、バーリー、レヴィンソン、およびパクス(Bery, Levinsohn, and Pakes, 1995) [BLP]の同一の富を可能にし、同時に線形需要の分析的および計算的利点を維持する:それは市場規模を外部的に固定することを必要としません、選択セットの異

Machine translation (Meta M2M100); the English original follows.

Abstract

Aggregate linear demand systems can be micro-founded by a population of heterogeneous consumers making discrete choices. They can also be extended to incorporate income effects. I prove these results and show how to structurally estimate this class of models using only market-level data. The distribution of consumer preferences is recovered by disciplining the corner solutions with aggregate terms only. This approach allows for the same richness of Berry, Levinsohn, and Pakes (1995) [BLP] while retaining the analytical and computational advantages of linear demand: it does not require exogenously fixing market size, allows for heterogeneity in choice sets, and results in a flexible substitution matrix which varies endogenously as different consumers enter/exit the market. The discrete-choice microfoundation facilitates welfare analysis and the flexible measurement of markups an cost pass-throughs, among a wide range of other applications.

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Topics: Aggregate (composite), Economics, Econometrics, Discrete choice, Class (philosophy), Population

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