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arXiv · 1905.02990

Quantifying Triadic Closure in Multi-Edge Social Networks

Laurence Brandenberger·Giona Casiraghi·Vahan Nanumyan·Frank Schweitzer
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Abstract

Multi-edge networks capture repeated interactions between individuals. In social networks, such edges often form closed triangles, or triads. Standard approaches to measure this triadic closure, however, fail for multi-edge networks, because they do not consider that triads can be formed by edges of different multiplicity. We propose a novel measure of triadic closure for multi-edge networks of social interactions based on a shared partner statistic. We demonstrate that our operalization is able to detect meaningful closure in synthetic and empirical multi-edge networks, where common approaches fail. This is a cornerstone in driving inferential network analyses from the analysis of binary networks towards the analyses of multi-edge and weighted networks, which offer a more realistic representation of social interactions and relations.

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Laurence Brandenberger, Giona Casiraghi, Vahan Nanumyan, Frank Schweitzer. 2019-05-08. Quantifying Triadic Closure in Multi-Edge Social Networks. https://doi.org/10.1145/3341161.3342926

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