手法を比較

	勾配ブースティング	オンラインランダムフォレスト
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	2001	2009
提唱者	Friedman, J. H.	Saffari, A. et al.
種類	Ensemble (sequential boosting of decision trees)	Incremental ensemble (streaming decision trees)
原典	Friedman, J. H. (2001). Greedy Function Approximation: A Gradient Boosting Machine. Annals of Statistics, 29(5), 1189–1232.	Saffari, A., Leistner, C., Santner, J., Godec, M., & Bischof, H. (2009). On-line random forests. In Proceedings of the 3rd IEEE International Workshop on On-Line Learning for Computer Vision (OLCV 2009), pp. 1–8. IEEE.
別名	Gradient Boosting (GBM), GBM, gradient boosted trees, gradient boosting machine	ORF, streaming random forest, incremental random forest, adaptive random forest
関連	5	6
概要	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.	Online Random Forest (ORF) extends the classic Random Forest to streaming settings, updating each tree incrementally as new observations arrive without storing or replaying the full training set. Algorithms such as Adaptive Random Forests (ARF) add drift detection so the ensemble adapts when the data distribution changes over time.