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Model averaging approaches to data subset selection

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arxiv 2305.19417 v2 pith:6FAKLNRX submitted 2023-05-30 stat.ME hep-lat

Model averaging approaches to data subset selection

classification stat.ME hep-lat
keywords datamodelcriteriaselectionaveragingcomparedifferentsubset
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Model averaging is a useful and robust method for dealing with model uncertainty in statistical analysis. Often, it is useful to consider data subset selection at the same time, in which model selection criteria are used to compare models across different subsets of the data. Two different criteria have been proposed in the literature for how the data subsets should be weighted. We compare the two criteria closely in a unified treatment based on the Kullback-Leibler divergence, and conclude that one of them is subtly flawed and will tend to yield larger uncertainties due to loss of information. Analytical and numerical examples are provided.

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Cited by 2 Pith papers

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