方法对比

	装袋集成	AdaBoost
领域	集成学习	机器学习
方法族	Machine learning	Machine learning
起源年份	1996	1997
提出者	Leo Breiman	Freund, Y. & Schapire, R.E.
类型	parallel ensemble	Ensemble (sequential boosting of weak learners)
开创性文献	Breiman, L. (1996). Bagging predictors. Machine Learning, 24(2), 123-140.	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.
别名	bootstrap aggregating	AdaBoost (Adaptive Boosting), adaptive boosting, adaptif artırma
相关	4	5
摘要	Bagging, short for bootstrap aggregating, is an ensemble method that reduces variance by training multiple copies of a single learning algorithm on different random subsets of the training data. Each subset is created via bootstrap sampling—randomly drawing samples with replacement. Predictions are combined through majority voting (classification) or averaging (regression). Introduced by Leo Breiman in 1996, bagging forms the foundation for random forests and is particularly effective for reducing overfitting in high-variance models.	AdaBoost (Adaptive Boosting) is the original boosting algorithm, introduced by Yoav Freund and Robert Schapire in 1997, that combines a sequence of simple weak learners by giving more weight to the observations they get wrong. The forerunner of gradient boosting, it is simple, interpretable, and a strong baseline for classification.