C9. Pooling

Topic: Hierarchical Bayes · more questions on this topic
‹ Question 17

How does partial pooling in a hierarchical model differ from complete pooling and no pooling?

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Definitions/notation. Complete pooling uses one common group parameter, no pooling estimates each group separately, and partial pooling connects distinct group parameters through a shared population distribution. This hierarchy allows information to be shared, typically shrinking less precisely estimated group effects more strongly toward the population centre.