There were 6 divergences after tuning. Increase `target_accept` or reparameterize

[ayao]

@luisroque

Hi, you could use more informative priors. For example, reducing the sd in the normal distribution of a and using a HalfCauchy or HalfNormal instead of a uniform distribution for sigma .

Hope it helps!

Thanks for your advice, it’s divergence due to the bad priors? I am the newer to pymc , studying the text " Statistical-Rethinking"。 I try run the pymc code ，but some meet divergence warning。