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Tobias Boege: Marginal independence models

Time: Tue 2023-02-14 10.15

Location: 3721, Lindstedtsvägen 25, and Zoom

Video link: Meeting ID: 621 8808 6001

Participating: Tobias Boege (Aalto University)

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We impose rank one constraints on marginalizations of a tensor given by a simplicial complex. If the tensor is a discrete probability distribution, these rank constraints cause mutual independences among the random variables. These statistical models become toric after a linear change of coordinates. We study their toric ideals with emphasis on random graph models and use the new coordinates to compute ED and ML degrees.