Fix need for dummy data in sample_posterior_predictive
#7265
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ricardoV94
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ricardoV94
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May 3, 2024
tests/backends/test_arviz.py
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This y was in fact observed data... Now nothing stops the user from using y both as observed data and constant data, so I am not sure we want to truly remove it.
We can check if y shows up in the generative graph.
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This avoids needing to set dummy observed data when doing sample_posterior_predictive when that is not part of the generative graph.
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Let's get this merged? The CI failure looks unrelated. |
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Description
Fix arviz backend find_constants
This also fixes a bug when doing sample_posterior_predictive with resized X data, where the old unused Y data would be retrieved and a dimension mismatch would crop up, unless a dummy Y was set prior to sampling.
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📚 Documentation preview 📚: https://pymc--7265.org.readthedocs.build/en/7265/