135 citations · 258 across the 8 of their papers we have counts for
Showing 2009 · math.STShow all
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math.ST2009
Smoothness of Gaussian conditional independence models
Mathias Drton, Han Xiao
Conditional independence in a multivariate normal (or Gaussian) distribution is characterized by the vanishing of subdeterminants of the distribution's covariance matrix. Gaussian…
math.ST2009★ 80 cited
Discrete chain graph models
Mathias Drton
The statistical literature discusses different types of Markov properties for chain graphs that lead to four possible classes of chain graph Markov models. The different models are…
math.ST2009
Finiteness of small factor analysis models
Mathias Drton, Han Xiao
We consider small factor analysis models with one or two factors. Fixing the number of factors, we prove a finiteness result about the covariance matrix parameter space when the si…