So sánh phương pháp
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| Boosting× | Bagging (Bootstrap Aggregating)× | |
|---|---|---|
| Lĩnh vực | Học máy | Học máy |
| Họ | Machine learning | Machine learning |
| Năm ra đời≠ | 1990–1997 | 1996 |
| Người khởi xướng≠ | Schapire, R. E.; Freund, Y. | Breiman, L. |
| Loại≠ | Sequential ensemble (iterative reweighting) | Ensemble meta-algorithm (variance reduction via bootstrap aggregation) |
| Công trình gốc≠ | Freund, Y. & Schapire, R. E. (1997). A decision-theoretic generalization of on-line learning and an application to boosting. Journal of Computer and System Sciences, 55(1), 119–139. DOI ↗ | Breiman, L. (1996). Bagging Predictors. Machine Learning, 24(2), 123–140. DOI ↗ |
| Tên gọi khác≠ | AdaBoost, gradient boosting, iterative reweighting ensemble, sequential ensemble | Bootstrap Aggregating, bootstrap aggregation, bagged ensemble, bagged predictor |
| Liên quan≠ | 6 | 5 |
| Tóm tắt≠ | Boosting is a sequential ensemble technique that converts many simple, barely-better-than-chance learners into a single highly accurate model by repeatedly focusing training on the examples that previous learners got wrong, then combining all learners with weights proportional to their individual accuracy. | Bagging, short for Bootstrap Aggregating, is an ensemble meta-algorithm introduced by Leo Breiman in 1996 that trains multiple copies of a base learner on independently drawn bootstrap samples of the training data and combines their predictions — by averaging for regression or majority vote for classification — to produce a final predictor with substantially lower variance than any single base learner. |
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