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ABSTRACT:
SUBMITTER: Wehbe L
PROVIDER: S-EPMC8317475 | biostudies-literature | 2015 Dec
REPOSITORIES: biostudies-literature
Wehbe Leila L Ramdas Aaditya A Steorts Rebecca C RC Shalizi Cosma Rohilla CR
The annals of applied statistics 20151201 4
Functional neuroimaging measures how the brain responds to complex stimuli. However, sample sizes are modest, noise is substantial, and stimuli are high dimensional. Hence, direct estimates are inherently imprecise and call for regularization. We compare a suite of approaches which regularize via <i>shrinkage</i>: ridge regression, the elastic net (a generalization of ridge regression and the lasso), and a hierarchical Bayesian model based on small area estimation (SAE). We contrast regularizati ...[more]