bayesian beta regression

  1. A

    Difference between VCV by inverting Hessian at ML and by Hierarchical Bayes

    Let's say we have a multimomial logit problem and we find the best beta coeffcients b* aggregating all units. The inverse of the Hessian at b* gives us a VCV matrix at this point which shows roughly how betas vary across units. The other way to get a VCV matrix is to use Hierarchical Bayes where...
  2. R

    Lack to fit in bayesian beta regression model

    Hello! I have a question about beta regression model. I fitted a bayesian beta regression. - Coefficients are probabilistically (using the posterior distributions) different of zero. - Gelman-Rubin statistics (for each coefficient) are very close to 1. But, the bayesian p-value is very...
  3. R

    Bayesian p-value in WinBUGS

    Hi everybody. Nice to greet you. I have a question about Bayesian p-value in WinBUGS. I'm trying to fit a Bayesian Beta Regression according to Branscum et al. (2007). But I don't know what I must to do to obtain the bayesian p-value to validate the model. Suppose that y is the response...