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	半教師あり能動学習	ラベル伝播
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	2002	2002
提唱者	Muslea, I., Minton, S., & Knoblock, C. A.	Zhu, X. & Ghahramani, Z.
種類	Hybrid learning framework	Graph-based semi-supervised classification
原典	Settles, B. (2012). Active Learning. Synthesis Lectures on Artificial Intelligence and Machine Learning. Morgan & Claypool.	Zhu, X., & Ghahramani, Z. (2002). Learning from labeled and unlabeled data with label propagation. Technical Report CMU-CALD-02-107, Carnegie Mellon University.
別名	SSAL, active semi-supervised learning, query-based semi-supervised learning, semi-supervised learning with active queries	LP, label spreading, graph-based semi-supervised learning, harmonic label propagation
関連	3	3
概要	Semi-supervised Active Learning (SSAL) is a hybrid learning paradigm that combines active learning's selective query strategy with semi-supervised learning's ability to exploit unlabeled data. The model iteratively selects the most informative unlabeled instances for expert annotation while simultaneously leveraging the large pool of unannotated samples to improve its own representations, dramatically reducing labeling costs while maintaining strong predictive accuracy.	Label Propagation is a graph-based semi-supervised learning algorithm introduced by Zhu and Ghahramani in 2002 that spreads class labels from a small set of labeled nodes to a large set of unlabeled nodes by iteratively diffusing label information along the edges of a similarity graph, exploiting the manifold structure of the data.