手法を比較

	オンラインランダムフォレスト	オンライン決定木
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	2009	2000
提唱者	Saffari, A. et al.	Domingos, P. & Hulten, G.
種類	Incremental ensemble (streaming decision trees)	Incremental supervised classifier
原典	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.	Domingos, P., & Hulten, G. (2000). Mining very fast data streams. In Proceedings of the 6th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (pp. 71–80). ACM.
別名	ORF, streaming random forest, incremental random forest, adaptive random forest	Hoeffding Tree, VFDT, Very Fast Decision Tree, incremental decision tree
関連	6	6
概要	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.	An Online Decision Tree is a decision tree that grows incrementally from a continuous stream of data without revisiting past examples. The dominant algorithm, the Hoeffding Tree (VFDT), uses the Hoeffding bound to decide when enough examples have been seen at a node to split it confidently, enabling scalable, real-time classification on potentially infinite data streams.