Limit theorems for network dependent random variables

A-Tier
Journal: Journal of Econometrics
Year: 2021
Volume: 222
Issue: 2
Pages: 882-908

Authors (3)

Kojevnikov, Denis (not in RePEc) Marmer, Vadim (University of British Columbia) Song, Kyungchul (not in RePEc)

Score contribution per author:

1.341 = (α=2.01 / 3 authors) × 2.0x A-tier

α: calibrated so average coauthorship-adjusted count equals average raw count

Abstract

This paper is concerned with cross-sectional dependence arising because observations are interconnected through an observed network. Following (Doukhan and Louhichi, 1999), we measure the strength of dependence by covariances of nonlinearly transformed variables. We provide a law of large numbers and central limit theorem for network dependent variables. We also provide a method of calculating standard errors robust to general forms of network dependence. For that purpose, we rely on a network heteroskedasticity and autocorrelation consistent (HAC) variance estimator, and show its consistency. The results rely on conditions characterized by tradeoffs between the rate of decay of dependence across a network and network’s denseness. Our approach can accommodate data generated by network formation models, random fields on graphs, conditional dependency graphs, and large functional-causal systems of equations.

Technical Details

RePEc Handle
repec:eee:econom:v:222:y:2021:i:2:p:882-908
Journal Field
Econometrics
Author Count
3
Added to Database
2026-01-25