WARNING: There were files not up to date in the code repository (see /Users/bouchard/w/blogobayes/www/ex/hm/results/all/Hierarchical--978298422/executionInfo/code/dirty-files.txt) Warning: small concentrations may cause numeric instability to Dirichlet and Beta distributions. Consider enforcing a lower bound of say 0.5 This message may also occur when slice samling outside of such constraint, you can then ignore this message.