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Spike-and-slab is a classic prior structure in Bayesian variable selection, in which the spike corresponds to a degenerate distribution with a coefficient of zero and the slab is a wide diffuse distribution when the coefficient is nonzero; group spike-and-slab extends this idea to variable groups or interaction terms.

1
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50%
Confidence
Long-term
Relevance
10/16/2026
First Seen

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