I have question about the number of samples generated by sample_posterior_predictive. Suppose I have fitted my model and obtained a posterior trace with 4 chains with 1000 samples each (= 4000 samples from the posterior in total). Now, I would like to make posterior predictions and compare them to …

You can pass a size argument to sample_posterior_predictive(). This allows you to specify: The number of random draws from the distribution specified by the parameters in each sample of the trace. Not recommended unless more than ndraws times nchains posterior predictive samples are needed. API…

Number of samples generated by `sample_posterior_predictive`

Questions

mschmidt87 October 7, 2020, 4:19am 3

Oh, I should have looked a bit further in the documentation. Thanks a lot for the quick help.

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Number of samples generated by `sample_posterior_predictive`

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