Compară metode

	Ansamblu de boosting	Bagging Ensemble
Domeniu	Învățare prin ansambluri	Învățare prin ansambluri
Familie	Machine learning	Machine learning
Anul apariției	1990	1996
Autorul original	Robert Schapire	Leo Breiman
Tip	sequential ensemble	parallel ensemble
Sursa seminală	Schapire, R. E. (1990). The strength of weak learnability. Machine Learning, 5(2), 197-227.	Breiman, L. (1996). Bagging predictors. Machine Learning, 24(2), 123-140.
Denumiri alternative	adaptive boosting, sequential ensemble	bootstrap aggregating
Înrudite	4	4
Rezumat	Boosting is an ensemble method that sequentially trains weak learners and combines them into a strong predictor by focusing on samples that previous models misclassified. Each new weak learner is weighted according to the difficulty of its training task, and final predictions are made via weighted voting. Pioneered by Schapire (1990) and refined in AdaBoost (Freund & Schapire, 1997), boosting converts weak learners (barely better than random) into strong learners through sequential reweighting.	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.