Inferring pattern generators on networks

Piotr Nyczka, Marc-Thorsten Hütt and Annick Lesne

Physica A: Statistical Mechanics and its Applications, 2021, vol. 566, issue C

Abstract: Given a pattern on a network, i.e. a subset of nodes, can we assess, whether they are randomly distributed on the network or have been generated in a systematic fashion following the network architecture? This question is at the core of network-based data analyses across a range of disciplines — from incidents of infection in social networks to sets of differentially expressed genes in biological networks. Here we introduce generic ‘pattern generators’ based on an Eden growth model. We assess the capacity of different pattern measures like connectivity, edge density or various average distances, to infer the parameters of the generator from the observed patterns. Some measures perform consistently better than others in inferring the underlying pattern generator, while the best performing measures depend on the global topology of the underlying network. Moreover, we show that pattern generator inference remains possible in case of limited visibility of the patterns.

Keywords: Patterns; Network clusters; Teleportation random walks; Eden model; Parametric inference; Mutual information (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:566:y:2021:i:c:s0378437120309298

DOI: 10.1016/j.physa.2020.125631

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