To know how good a PPL is, try writing down: 1, a Categorical regression, check with result when replace Categorical with Multinomial(1, p). 2, a multivariate mixture model, check its forward random generation and how easy to get evaluation of logp for each mixture component.
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Replying to @junpenglao
I'd be very interested to see examples of this in various PPLs along with your notes on where/how they fail.
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Replying to @avibryant
I have a lot of examples in PyMC3 showing how we failed
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Replying to @junpenglao
It would be a valuable service to the rest of us if you found time to write those up! (Not that I expect you to. Just that I'd be appreciative.)
1:32 PM - 13 Nov 2018
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