手法を比較

	半教師ありブースティング	XGBoost
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	1999–2009	2016
提唱者	Mallapragada, P. K.; Bennett, K. P.; and others	Chen, T. & Guestrin, C.
種類	Semi-supervised ensemble method	Ensemble (gradient-boosted decision trees)
原典	Mallapragada, P. K., Jin, R., Jain, A. K., & Liu, Y. (2009). SemiBoost: Boosting for Semi-supervised Learning. IEEE Transactions on Pattern Analysis and Machine Intelligence, 31(11), 2000–2014.	Chen, T. & Guestrin, C. (2016). XGBoost: A Scalable Tree Boosting System. Proceedings of the 22nd ACM SIGKDD, 785–794.
別名	SemiBoost, SSL boosting, boosting with unlabeled data, semi-supervised ensemble boosting	XGBoost, extreme gradient boosting, scalable tree boosting
関連	5	5
概要	Semi-supervised Boosting is an ensemble learning paradigm that extends classical boosting algorithms — such as AdaBoost — to exploit both labeled and unlabeled data. By propagating label information through a similarity structure over unlabeled instances, it trains stronger classifiers than supervised boosting alone when labeled data are scarce.	XGBoost (Extreme Gradient Boosting) is a scalable tree-boosting algorithm introduced by Tianqi Chen and Carlos Guestrin in 2016. It builds a strong predictor by adding decision trees one at a time, each correcting the errors left by the trees before it, and is a powerful prediction method widely used in competitions.