Vertaile menetelmiä

	Regularisoitu tehostus	Gradient Boosting
Tieteenala	Koneoppiminen	Koneoppiminen
Menetelmäperhe	Machine learning	Machine learning
Syntyvuosi	2001–2016	2001
Kehittäjä	Friedman, J. H.; extended by Chen & Guestrin	Friedman, J. H.
Tyyppi	Regularized ensemble (boosting with shrinkage/penalty)	Ensemble (sequential boosting of decision trees)
Alkuperäislähde	Friedman, J. H. (2001). Greedy function approximation: A gradient boosting machine. Annals of Statistics, 29(5), 1189–1232.	Friedman, J. H. (2001). Greedy Function Approximation: A Gradient Boosting Machine. Annals of Statistics, 29(5), 1189–1232.
Rinnakkaisnimet	shrinkage boosting, penalized boosting, regularized gradient boosting, L1/L2 boosting	Gradient Boosting (GBM), GBM, gradient boosted trees, gradient boosting machine
Liittyvät	5	5
Tiivistelmä	Regularized boosting extends gradient boosting by adding explicit controls — shrinkage (learning rate), L1/L2 weight penalties, subsampling, and tree-complexity limits — to the objective function and the update rule. These constraints reduce overfitting, stabilise the model on noisy or small datasets, and are the core reason why systems such as XGBoost and LightGBM consistently outperform vanilla boosting on real-world tabular benchmarks.	Gradient Boosting is an ensemble learning method, formalised by Jerome H. Friedman in 2001, that combines a sequence of weak learners — typically shallow decision trees — so that each new tree is fitted to minimise the residual errors of the trees before it. It is the core algorithm behind popular implementations such as XGBoost, LightGBM and CatBoost.