Latent Space Modeling of Hypergraph Data

Kathryn Turnbull, Simón Lunagómez, Christopher Nemeth and Edoardo Airoldi

Journal of the American Statistical Association, 2024, vol. 119, issue 548, 2634-2646

Abstract: The increasing prevalence of relational data describing interactions among a target population has motivated a wide literature on statistical network analysis. In many applications, interactions may involve more than two members of the population and this data is more appropriately represented by a hypergraph. In this article, we present a model for hypergraph data that extends the well-established latent space approach for graphs and, by drawing a connection to constructs from computational topology, we develop a model whose likelihood is inexpensive to compute. A delayed acceptance MCMC scheme is proposed to obtain posterior samples and we rely on Bookstein coordinates to remove the identifiability issues associated with the latent representation. We theoretically examine the degree distribution of hypergraphs generated under our framework and, through simulation, we investigate the flexibility of our model and consider estimation of predictive distributions. Finally, we explore the application of our model to two real-world datasets. Supplementary materials for this article are available online.

Date: 2024
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DOI: 10.1080/01621459.2023.2270750

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