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Research map / Learning theory and algorithms / Prediction and decision losses

Bootstrap in High Dimension with Low Computation

ICML 2023 · Learning theory and algorithms › Prediction and decision losses · approach: Distributionally robust optimization · 0 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use cheap bootstrap (t-interval with fixed small B) instead of basic/percentile/standard-error bootstraphigh-dimensional regression and simulation examples · Table 1 across six examplescoverage probability: e.g. ellipsoidal B=10: 97.5% vs 82.1% basic, 20.8% percentile, 73.6% SEBHelped
Increase number of resamples B from 1 to 10 for cheap bootstrap (ablation)Cheap bootstrap · Interval width across examplesinterval width: widths decrease roughly 2/3 from B=1 to B=2 and about 4/5 from B=1 to B=10Helped
Increase dimension p from 18000 to 21000 in logistic regression (n=1e5) (ablation)Cheap bootstrap · Logistic regression varying pinterval width: B=1 width 11.473 at p=18000 vs 1272.497 at p=21000Hurt
Increase dimension p to 15000-18000 in logistic regression with n=1e5 (cheap bootstrap over-covers) (ablation)Cheap bootstrap · Logistic regression varying pcoverage probability: coverage near 100% vs nominal 95%Hurt
Add l2 regularization to logistic regression (ablation)Cheap bootstrap · Regularized logistic regression varying pcoverage probability: validity boundary of p extends to about 12000-15000 vs about 9000 unregularizedHelped

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