Hello, the following code produces an error: with pm.Model() as model: mu = pm.LogNormal('mu',mu=1,sigma=1,shape=(2,2)) var = pm.InverseGamma('var',alpha=1,beta=1,shape=2) cov = pm.Beta('cov',alpha=1,beta=1) cov_matrix = pm.math.stack([var[0],cov,cov, var[1]]).reshape((2,2)) …

[image] HughKinnear: The error: I don’t see the error locally. Sampling took ~1 minute for me, although there are divergences (my guess is that the LogNormal mu prior is a bit at odds with negative observed values). Are you using the last version of PyMC? If you are not, can you try updating…

Positive Distributions as mu Causing Value Error in MvNormal

Questions v5

cluhmann January 11, 2024, 2:10pm 5

I still get the error on 5.10.2, so it must have been something recent. @ricardoV94 is always fixing things!

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Positive Distributions as mu Causing Value Error in MvNormal

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