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- W2136327423 abstract "Data sets involving multiple groups with shared characteristics frequently arise in practice. In this paper we extend hierarchical Dirichlet processes to model such data. Each group is assumed to be generated from a template mixture model with group level variability in both the mixing proportions and the component parameters. Variabilities in mixing proportions across groups are handled using hierarchical Dirichlet processes, also allowing for automatic determination of the number of components. In addition, each group is allowed to have its own component parameters coming from a prior described by a template mixture model. This group-level variability in the component parameters is handled using a random effects model. We present a Markov Chain Monte Carlo (MCMC) sampling algorithm to estimate model parameters and demonstrate the method by applying it to the problem of modeling spatial brain activation patterns across multiple images collected via functional magnetic resonance imaging (fMRI)." @default.
- W2136327423 created "2016-06-24" @default.
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- W2136327423 date "2007-09-07" @default.
- W2136327423 modified "2023-10-02" @default.
- W2136327423 title "Hierarchical Dirichlet Processes with Random Effects" @default.
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- W2136327423 doi "https://doi.org/10.7551/mitpress/7503.003.0092" @default.
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