Fills in any NULL elements of a bqmm_prior() using simple, robust scales
derived from the response and design matrix. The intent is to keep sigma
identified and the sampler away from divergences, not to be informative.
Fills in any NULL elements of a bqmm_prior() using simple, robust scales
derived from the response and design matrix. The intent is to keep sigma
identified and the sampler away from divergences, not to be informative.