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Matching to Suppliers in the Production Network: a Quantitative Framework

Author

Listed:
  • Alonso Alfaro-Ureña

    (Department of Economic Research, Central Bank of Costa Rica)

  • Paolo Zacchia

    (Charles University, Czech Academy of Sciences, IZA)

Abstract

We build a model of production network formation that enables econometric estimation of the determinants of supplier choice, like trade costs or matching frictions. The model informs an estimator obtained from a transformation of the multinomial logit likelihood function that conditions on two network statistics: the out-degree of sellers (a sufficient statistic for the seller marginal costs) and the in-degree of buyers (which is pinned down by technology and by “make-or-buy” decisions). In an empirical application about the network effects of a major Costa Rican highway, this estimator registers much smaller estimates than those of a (biased) naive multinomial logit. ***Resumen: Desarrollamos un modelo de formación de redes de producción que permite la estimación econométrica de los determinantes en la elección de proveedores, tales como los costos de comerciar o las fricciones de emparejamiento. El modelo guía un estimador obtenido a partir de una transformación de la función de verosimilitud del logit multinomial, que está condicionado por dos estadísticas de red: el grado de salida de los vendedores (una estadística suficiente para los costos marginales del vendedor) y el “grado de entrada” (in-degree) de los compradores (determinado por la tecnología y las decisiones de “hacer o comprar”). En una aplicación empírica sobre los efectos en red de una importante carretera en Costa Rica, este estimador arroja estimaciones considerablemente menores que las de un logit multinomial ingenuo (y sesgado).

Suggested Citation

  • Alonso Alfaro-Ureña & Paolo Zacchia, 2025. "Matching to Suppliers in the Production Network: a Quantitative Framework," Documentos de Trabajo 2502, Banco Central de Costa Rica.
  • Handle: RePEc:apk:doctra:2502
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    File URL: https://repositorioinvestigaciones.bccr.fi.cr/handle/20.500.12506/499
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    References listed on IDEAS

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    Keywords

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    JEL classification:

    • C25 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Discrete Regression and Qualitative Choice Models; Discrete Regressors; Proportions; Probabilities
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • R12 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade (economic geography)
    • R15 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Econometric and Input-Output Models; Other Methods

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