Browsing by Author "Marigliano, Orlando"

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    The curved exponential family of a staged tree
    (Project euclid, 2022-04-08) Leonelli, Manuele; Görgen, Christiane; Marigliano, Orlando; https://ror.org/02jjdwm75
    Staged tree models are a discrete generalization of Bayesian networks. We show that these form curved exponential families and derive their natural parameters, sufficient statistic, and cumulant-generating function as functions of their graphical representation. We give necessary and sufficient graphical criteria for classifying regular subfamilies and discuss implications for model selection.