pymc-devs/pymc
Auf GitHub ansehenUse same API for defining internal and external Nuts kwargs
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#6.757 geöffnet am 7. Juni 2023
bughelp wantedjax
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Description
User on discourse reported:
How can I set the maximum tree depth for the NUTS method from the numpyro library? The way described in the test file test_mcmc_external.py doesn’t work:
import pymc as pm import numpy as np with pm.Model(): a = pm.Normal("a") idata = pm.sample(nuts_sampler = "numpyro", target_accept = 0.99, nuts = {"max_treedepth": 1}, random_seed = 1410) print(np.max(idata.sample_stats.tree_depth)) # <xarray.DataArray 'tree_depth' ()> # array(4)and specifying something via the nuts_kwargs argument throws ValueError: Unused step method arguments: {'nuts_kwargs'}.
I don't know if nuts should be converted to nuts_kwargs, but even if a user were to pass nuts_kwargs to sample, those wouldn't make it to the sample_numpyro_nuts function because we drop arbitrary kwargs passed here: