2 papers
math.PR2020
A de Finetti-type representation of joint hierarchically exchangeable arrays on directed acyclic graphs
Jiho Lee
We define joint exchangeability on arrays indexed by a vector of natural numbers with coordinates being the vertices of directed acyclic graphs (DAGs) using local isomorphisms. The…
math.PR2018
A Generalization of Hierarchical Exchangeability on Trees to Directed Acyclic Graphs
Paul Jung, Jiho Lee, Sam Staton +1
Motivated by the problem of designing inference-friendly Bayesian nonparametric models in probabilistic programming languages, we introduce a general class of partially exchangeabl…