手法を比較

	正則化転移学習	正則化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	2000s–2010s	2012
提唱者	Pan, S. J. & Yang, Q. (survey); regularization variants by multiple authors	Deng, H. & Runger, G.
種類	Regularized supervised/semi-supervised learning framework	Regularized ensemble (penalized feature selection in trees)
原典	Pan, S. J., & Yang, Q. (2010). A survey on transfer learning. IEEE Transactions on Knowledge and Data Engineering, 22(10), 1345–1359.	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.
別名	regularized domain adaptation, transfer learning with regularization, penalized transfer learning, regularized fine-tuning	RRF, Guided Regularized Random Forest, GRRF, regularized tree ensemble
関連	6	5
概要	Regularized Transfer Learning applies explicit penalty terms to a transfer learning pipeline to control how much a model shifts away from source-domain knowledge when adapting to a new target domain. The regularizer discourages negative transfer — the harmful carry-over of irrelevant source patterns — while preserving beneficial shared representations and preventing overfitting when target-domain labels are scarce.	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.