Functional Differencing in Networks

Stéphane Bonhomme and Kevin Dano

Revue économique, 2024, vol. 75, issue 1, 147-175

Abstract: Economic interactions often occur in networks where heterogeneous agents (such as workers or firms) sort and produce. However, most existing estimation approaches either require the network to be dense, which is at odds with many empirical networks, or they require restricting the form of heterogeneity and the network formation process. We show how the functional differencing approach introduced by Bonhomme [2012] in the context of panel data, can be applied in network settings to derive moment restrictions on model parameters and average effects. Those restrictions are valid irrespective of the form of heterogeneity, and they hold in both dense and sparse networks. We illustrate the analysis with linear and nonlinear models of matched employer-employee data, in the spirit of the model introduced by Abowd, Kramarz and Margolis [1999]. JEL Codes: C18, C23, C33, C35.

Keywords: econometric models of networks; matching; sorting; heterogeneity; functional differencing (search for similar items in EconPapers)
JEL-codes: C18 C23 C33 C35 (search for similar items in EconPapers)
Date: 2024
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