Information theory for hypergraph similarity

Fuente: arXiv
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Main Authors: Felippe, Helcio, Kirkley, Alec, Battiston, Federico
Format: Preprint
Published: 2025
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author Felippe, Helcio
Kirkley, Alec
Battiston, Federico
author_facet Felippe, Helcio
Kirkley, Alec
Battiston, Federico
contents Comparing networks is essential for a number of downstream tasks, from clustering to anomaly detection. Despite higher-order interactions being critical for understanding the dynamics of complex systems, traditional approaches for network comparison are limited to pairwise interactions only. Here we construct a general information theoretic framework for hypergraph similarity, capturing meaningful correspondence among higher-order interactions while correcting for spurious correlations. Our method operationalizes any notion of structural overlap among hypergraphs as a principled normalized mutual information measure, allowing us to derive a hierarchy of increasingly granular formulations of similarity among hypergraphs within and across orders of interactions, and at multiple scales. We validate these measures through extensive experiments on synthetic hypergraphs and apply the framework to reveal meaningful patterns in a variety of empirical higher-order networks. Our work provides foundational tools for the principled comparison of higher-order networks, shedding light on the structural organization of networked systems with non-dyadic interactions.
format Preprint
id arxiv_https___arxiv_org_abs_2510_27411
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Information theory for hypergraph similarity
Felippe, Helcio
Kirkley, Alec
Battiston, Federico
Physics and Society
Data Analysis, Statistics and Probability
Comparing networks is essential for a number of downstream tasks, from clustering to anomaly detection. Despite higher-order interactions being critical for understanding the dynamics of complex systems, traditional approaches for network comparison are limited to pairwise interactions only. Here we construct a general information theoretic framework for hypergraph similarity, capturing meaningful correspondence among higher-order interactions while correcting for spurious correlations. Our method operationalizes any notion of structural overlap among hypergraphs as a principled normalized mutual information measure, allowing us to derive a hierarchy of increasingly granular formulations of similarity among hypergraphs within and across orders of interactions, and at multiple scales. We validate these measures through extensive experiments on synthetic hypergraphs and apply the framework to reveal meaningful patterns in a variety of empirical higher-order networks. Our work provides foundational tools for the principled comparison of higher-order networks, shedding light on the structural organization of networked systems with non-dyadic interactions.
title Information theory for hypergraph similarity
topic Physics and Society
Data Analysis, Statistics and Probability
url https://arxiv.org/abs/2510.27411