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Small sample improvement over Bayes prediction under model uncertainty

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Title: Small sample improvement over Bayes prediction under model uncertainty
Author: Wong, Hubert
Degree Doctor of Philosophy - PhD
Program Statistics
Copyright Date: 2000
Abstract: Existing criteria for evaluating the adequacy of a predictive model are model-based (e.g. AIC, BIC, MSPE) or empirical (e.g. PRESS and other cross-validation type criteria). We introduce a new class of "mongrel" criteria for on-line prediction that evaluates candidate predictors based on both model information and past empirical performance. Simulation results showed that the mongrel procedure produced more accurate predictions than the standard Bayes procedure for small sample sizes. This improvement was observed over a wide range of data-generators for the problem of variable selection in normal linear models.
URI: http://hdl.handle.net/2429/11210
Series/Report no. UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/]

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