In the code below (simplification of actual model), I am attempting to select a matrix (array) from a list using indices generated by a Categorical prior distribution. I do not understand why this generates an index out of bounds error. The theano code appears to work in isolation, but not in the Py…

The proposal value from the Metropolis sampler of the Categorical RV tree_index went out of the support, which generate index error down stream. The solution is not to assign Metropolis sampler to this RV, ie: step = Metropolis([probs]) where PyMC3 will assign CategoricalGibbsMetropolis to tree_i…

Array index generated by Categorical Distribution

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Helmut June 17, 2018, 12:08pm 3

Beautiful! Thanks very much.

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Array index generated by Categorical Distribution

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