I receive an error when i apply mcmc by pymc. Code: with pm.Model(coords={“test_event_dim”: range(len(used_data)), “test_support_dim”: range(2)}) as model: w = pm.Dirichlet(‘w’, a=np.ones(n_components)) p1 = pm.HalfNormal(“p1”,sigma=3, dims=(“test_support_dim”,)).exp() p2 = pm.HalfNormal(“p2”,…

MCMC SamplingError: Initial evaluation of model at starting point failed!

cluhmann October 3, 2023, 12:33pm 7

I can’t even get this to sample. I am getting shape errors. The observed data is shape (50, 3), but the likelihood has shape (n_components, 2)?

Topic		Replies	Views
Initial evaluation of model at starting point failed when running a mixture model Questions bug	2	1214	October 8, 2021
Pymc SamplingError: Initial evaluation of model at starting point failed! Questions	2	3512	June 19, 2021
Error with Model: Initial evaluation of model at starting point failed! Questions	5	13439	August 1, 2023
Large Feature Number Dirichlet Questions	6	1125	December 5, 2018
Pymc problem: SamplingError: Initial evaluation of model at starting point failed! Questions	1	1013	January 12, 2022