Confronta i metodi
Esamina i metodi selezionati fianco a fianco; le righe che differiscono sono evidenziate.
| Bagging (Bootstrap Aggregating)× | Boosting× | Albero decisionale× | |
|---|---|---|---|
| Campo | Apprendimento automatico | Apprendimento automatico | Apprendimento automatico |
| Famiglia | Machine learning | Machine learning | Machine learning |
| Anno di origine≠ | 1996 | 1990–1997 | 1984 |
| Ideatore≠ | Breiman, L. | Schapire, R. E.; Freund, Y. | Breiman, Friedman, Olshen & Stone |
| Tipo≠ | Ensemble meta-algorithm (variance reduction via bootstrap aggregation) | Sequential ensemble (iterative reweighting) | Recursive partitioning (if-then rules) |
| Fonte seminale≠ | Breiman, L. (1996). Bagging Predictors. Machine Learning, 24(2), 123–140. DOI ↗ | 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., Friedman, J.H., Olshen, R.A. & Stone, C.J. (1984). Classification and Regression Trees. Wadsworth. DOI ↗ |
| Alias≠ | Bootstrap Aggregating, bootstrap aggregation, bagged ensemble, bagged predictor | AdaBoost, gradient boosting, iterative reweighting ensemble, sequential ensemble | Karar Ağacı (Decision Tree), karar ağacı, classification tree, regression tree |
| Correlati≠ | 5 | 6 | 5 |
| Sintesi≠ | 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. | 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. | A Decision Tree is an interpretable classification and regression method, formalised by Breiman, Friedman, Olshen and Stone in their 1984 CART framework, that partitions the data with hierarchical if-then rules. Each split sends observations down one branch or another until a prediction is read off the leaf. |
| ScholarGateInsieme di dati ↗ |
|
|
|