Fix need for dummy data in sample_posterior_predictive
#7265
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ricardoV94
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ricardoV94
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sample_posterior_predictive
ricardoV94
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May 3, 2024
| @@ -454,7 +454,7 @@ def test_constant_data(self, use_context): | |||
| test_dict = { | |||
| "posterior": ["beta"], | |||
| "observed_data": ["obs"], | |||
| "constant_data": ["x", "y", "beta_sigma"], | |||
| "constant_data": ["x", "beta_sigma"], | |||
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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.
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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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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馃摎 Documentation preview 馃摎: https://pymc--7265.org.readthedocs.build/en/7265/