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Exponential-Family Random Graph Models for Multi-Layer Networks

Published online by Cambridge University Press:  01 January 2025

Pavel N. Krivitsky*
Affiliation:
The University of New South Wales
Laura M. Koehly
Affiliation:
National Institutes of Health
*
Correspondence should be made to Pavel N. Krivitsky, School of Mathematics and Statistics, The University of New South Wales, Sydney, NSW 2052, Australia. Email: p.krivitsky@unsw.edu.au

Abstract

Multi-layer networks arise when more than one type of relation is observed on a common set of actors. Modeling such networks within the exponential-family random graph (ERG) framework has been previously limited to special cases and, in particular, to dependence arising from just two layers. Extensions to ERGMs are introduced to address these limitations: Conway–Maxwell–Binomial distribution to model the marginal dependence among multiple layers; a “layer logic” language to translate familiar ERGM effects to substantively meaningful interactions of observed layers; and nondegenerate triadic and degree effects. The developments are demonstrated on two previously published datasets.

Information

Type
Theory and Methods
Copyright
Copyright © 2020 The Psychometric Society

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Supplementary material: File

Krivitsky et al. supplementary material

Exponential-Family Random Graph Models for Multi-Layer Networks (Supplement)
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Supplementary material: File

Krivitsky et al. supplementary material

Krivitsky et al. supplementary material 1
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