Dear list members,
I have some questions concerning the fitting of mixture models with WinBUGS:
1) comparison of mixture models:
On which characteristics of the mixture models does the usefulness of DIC for model comparison in the case of mixture models depend? Which alternatives could I use to compare (well separated) mixtures of time series models? Would the DIC be useful to compare different mixture models which have the SAME number of components? If so, how could I obtain the DIC in WinBUGS for a mixture model?
2) label-switching problem:
Is it true that non-overlap in the posterior distributions of parameters of components of a mixture, and unimodality of the posterior distribution of the mixing proportion may be considered as evidence against the occurence of label-switching?
Thanks very much for sharing references, suggestions, experience, answers..
Verena
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Verena Schmittmann
Department of Developmental Psychology <http://www.fmg.uva.nl/op/op_aktueel.cfm>
University of Amsterdam <http://www.uva.nl/>
Roetersstraat 15
1018 WB Amsterdam
The Netherlands
http://users.fmg.uva.nl/vschmittmann/
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