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The structured backbone of temporal social ties

Abstract : In many data sets, information on the structure and temporality of a system coexists with noise and non-essential elements. In networked systems for instance, some edges might be non-essential or exist only by chance. Filtering them out and extracting a set of relevant connections is a non-trivial task. Moreover, methods put forward until now do not deal with time-resolved network data, which have become increasingly available. Here we develop a method for filtering temporal network data, by defining an adequate temporal null model that allows us to identify pairs of nodes having more interactions than expected given their activities: the significant ties. Moreover, our method can assign a significance to complex structures such as triads of simultaneous interactions, an impossible task for methods based on static representations. Our results hint at ways to represent temporal networks for use in data-driven models.
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https://hal.archives-ouvertes.fr/hal-01981942
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Submitted on : Tuesday, January 15, 2019 - 12:49:56 PM
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Teruyoshi Kobayashi, Taro Takaguchi, Alain Barrat. The structured backbone of temporal social ties. Nature Communications, Nature Publishing Group, 2019, 10 (1), pp.220. ⟨10.1038/s41467-018-08160-3⟩. ⟨hal-01981942⟩

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