Jämför metoder
Granska de valda metoderna sida vid sida; rader som skiljer sig är markerade.
| Bagging (Bootstrap Aggregating)× | Boosting× | Gaussisk process× | |
|---|---|---|---|
| Ämnesområde | Maskininlärning | Maskininlärning | Maskininlärning |
| Familj | Machine learning | Machine learning | Machine learning |
| Ursprungsår≠ | 1996 | 1990–1997 | 2006 (book); roots in Kriging, 1951) |
| Upphovsperson≠ | Breiman, L. | Schapire, R. E.; Freund, Y. | Rasmussen, C. E. & Williams, C. K. I. |
| Typ≠ | Ensemble meta-algorithm (variance reduction via bootstrap aggregation) | Sequential ensemble (iterative reweighting) | Probabilistic non-parametric model |
| Ursprungskälla≠ | 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 ↗ | Rasmussen, C. E., & Williams, C. K. I. (2006). Gaussian Processes for Machine Learning. MIT Press. ISBN: 978-0-262-18253-9 |
| Alias≠ | Bootstrap Aggregating, bootstrap aggregation, bagged ensemble, bagged predictor | AdaBoost, gradient boosting, iterative reweighting ensemble, sequential ensemble | GP, Gaussian Process Regression, GPR, Kriging |
| Närliggande≠ | 5 | 6 | 3 |
| Sammanfattning≠ | 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 Gaussian Process (GP) is a non-parametric, fully probabilistic machine learning model that places a prior distribution directly over functions. Rather than predicting a single value, it returns a predictive mean and a calibrated uncertainty estimate at every test point, making it especially valuable for regression on small to medium datasets and for Bayesian optimization tasks. |
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