Exceedance Probabilities for the Dirichlet Distribution
  We derive an efficient method to calculate exceedance probabilities (EP) for the Dirichlet distribution when the number of event types is larger than two. Also, we present an intuitive application of Dirichlet EPs and compare our method to a sampling approach which is the current practice in neuroimaging model selection. 
Joram Soch, Carsten Allefeld
stat.AP math.ST q-bio.NC stat.TH