SWhat changed
Proved weak/strong PAC learnability equivalence and constructed an accuracy-amplifying learner under the paper's assumptions.
Scientific scope
The record is Schapire's sole-author 1990 Machine Learning article. The theorem uses the paper's PAC assumptions; it does not absorb Kearns and Valiant's prior formulation, Freund–Schapire AdaBoost or later practical boosting analyses.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Schapire's sole-author 1990 Machine Learning article. The theorem uses the paper's PAC assumptions; it does not absorb Kearns and Valiant's prior formulation, Freund–Schapire AdaBoost or later practical boosting analyses.
Contributors
- Robert E. Schapire · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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