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Spike and slab priors for variable selection

https://www.tandfonline.com/doi/abs/10.1080/01621459.1993.10476353

were initially proposed using a combination of normals prior and a mass at zero. After that, some improvements have been proposed on these priors.

What is the current state of the art in the choice or construction of spike and slab priors for variable selection?

https://en.wikipedia.org/wiki/Spike-and-slab_regression

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