Hello @paul.buerkner, I encounter this prior problem and here are my questions:
- How is \sigma scale calculated in t-distribution in
brms? In the paper, you said the degrees of freedom \nu is 3 by default, and the second argument, presumably, is the median of the data. But I didn’t find an explanation on how the \sigma is calculated.
- What default priors do population-level effects b use in
brms? If I use
get_prior, the prior of b is empty, and I didn’t find the prior information by using
Thank you in advance for your time and help.