rmcelreath / rethinking

Statistical Rethinking course and book package
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Sampling issue for the Cat Adoptions Survival model. #422

Open DanielJRowe opened 4 months ago

DanielJRowe commented 4 months ago

I'm trying to reproduce the cat adoptions example from the bonus video but am getting rhats of 2.7 and ess_bulks of infinity with the warning during sampling: "Exception: exponential_lccdf: Inverse scale parameter is 0, but must be positive finite!". Despite these issues, the traceplots look fine and I am getting the same results as in the video. I don't recall encountering this issue when I first went through the course last year.

Session Info: R version 4.3.1 (2023-06-16) Platform: aarch64-apple-darwin20 (64-bit) Running under: macOS Ventura 13.6.3 rethinking_2.40 cmdstanr_0.5.3