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Assortativity and bidegree distributions on Bernoulli random graph superpositions
Published online by Cambridge University Press: 19 August 2021
Abstract
A probabilistic generative network model with $n$ nodes and $m$ overlapping layers is obtained as a superposition of $m$ mutually independent Bernoulli random graphs of varying size and strength. When $n$ and $m$ are large and of the same order of magnitude, the model admits a sparse limiting regime with a tunable power-law degree distribution and nonvanishing clustering coefficient. In this article, we prove an asymptotic formula for the joint degree distribution of adjacent nodes. This yields a simple analytical formula for the model assortativity and opens up ways to analyze rank correlation coefficients suitable for random graphs with heavy-tailed degree distributions. We also study the effects of power laws on the asymptotic joint degree distributions.
Keywords
- Type
- Research Article
- Information
- Probability in the Engineering and Informational Sciences , Volume 36 , Issue 4 , October 2022 , pp. 1188 - 1213
- Copyright
- Copyright © The Author(s), 2021. Published by Cambridge University Press
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