방법 비교

	Regularized Random Forest	엑스트라 트리 (Extra Trees)
분야	머신러닝	머신러닝
계열	Machine learning	Machine learning
기원 연도	2012	2006
창시자	Deng, H. & Runger, G.	Geurts, P.; Ernst, D.; Wehenkel, L.
유형	Regularized ensemble (penalized feature selection in trees)	Ensemble (extremely randomized decision trees)
원전	Deng, H., & Runger, G. (2012). Feature selection via regularized trees. Proceedings of the 2012 International Joint Conference on Neural Networks (IJCNN), IEEE, pp. 1–8.	Geurts, P., Ernst, D. & Wehenkel, L. (2006). Extremely randomized trees. Machine Learning, 63(1), 3–42.
별칭	RRF, Guided Regularized Random Forest, GRRF, regularized tree ensemble	Extremely Randomized Trees, ExtraTreesClassifier, ExtraTreesRegressor, ET
관련	5	5
요약	Regularized Random Forest (RRF), introduced by Deng and Runger in 2012, extends the standard Random Forest by adding a penalty that discourages splits on features not already used in the ensemble. This built-in regularization produces sparser, less redundant feature subsets, making the model especially valuable when feature selection is as important as predictive accuracy.	Extra Trees (Extremely Randomized Trees), introduced by Geurts, Ernst, and Wehenkel in 2006, is an ensemble of decision trees that pushes randomisation further than Random Forest. Both the candidate features and the split thresholds are chosen completely at random at each node, eliminating the greedy search over thresholds. This extra randomness reduces variance, often matches or exceeds Random Forest accuracy, and runs substantially faster at training time.