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stat.ML2010
Reading Dependencies from Covariance Graphs
Jose M. Peña
The covariance graph (aka bi-directed graph) of a probability distribution is the undirected graph where two nodes are adjacent iff their corresponding random variables are…
stat.ML2010★ 17 cited
Faithfulness in Chain Graphs: The Gaussian Case
Jose M. Peña
This paper deals with chain graphs under the classic Lauritzen-Wermuth-Frydenberg interpretation. We prove that the regular Gaussian distributions that factorize with respect to a…