MEANING
A model diagnostic comparing observed data with replicated data simulated from the model’s posterior predictive distribution.
Use it for
Use for a Bayesian model diagnostic based on replicated data.Explain how model-generated data are compared with observed data to assess model fit.
Words that belong together
- posterior predictive check
- graphical posterior predictive check
- posterior predictive checks for model fit
On the page
A posterior predictive check revealed that the fitted model rarely reproduced the observed right tail.
Nearby words
Word forms
- Base
- posterior predictive check
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Usage notes
A poor match can reveal aspects the model fails to capture; a good match does not prove that the model is uniquely correct.
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