find_MAP appends _log__ or _interval__ to variable names

[michaelosthege]

I have a model that uses Lognormal and Uniform priors and if I do a pymc3.find_MAP(), the resulting dictionary has different variable keys than the names of the prior RVs.

I did observe that Lognormal priors will end up with a _log__ suffix and Uniform priors get _interval__

I searched both the GitHub repo and the documentation, but there is no mention in either of them.

Where does this suffix come from? Is it safe to just replace("_log__", "")?

[junpenglao]

Hi @michaelosthege, the _log__ and _interval__ suffix are the indications that these bound RVs were transformed to real domain, you can see more explanation here:
http://docs.pymc.io/notebooks/api_quickstart.html#Automatic-transforms-of-bounded-RVs

They are not the same as the original RVs, so you should not just replace them.

Similar discussion here: #2531