How to use the posterior distribution of one model as a prior distribution for another model

8

@jessegrabowski
I have tried using prior_from_idata, but there is one point I don’t understand.
What is the difference between trace1.prior.trace_prior_ and trace1.prior.a etc?

https://www.pymc.io/projects/experimental/en/latest/generated/pymc_experimental.utils.prior.prior_from_idata.html