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	Aktivt lärande	Bagging (Bootstrap Aggregating)
Ämnesområde	Maskininlärning	Maskininlärning
Familj	Machine learning	Machine learning
Ursprungsår	2009	1996
Upphovsperson	Burr Settles	Breiman, L.
Typ	Interactive supervised learning framework	Ensemble meta-algorithm (variance reduction via bootstrap aggregation)
Ursprungskälla	Settles, B. (2009). Active learning literature survey. University of Wisconsin-Madison Computer Sciences Technical Report 1648.	Breiman, L. (1996). Bagging Predictors. Machine Learning, 24(2), 123–140.
Alias	Query Learning, Optimal Experimental Design (ML context), Pool-Based Active Learning, Aktif Öğrenme	Bootstrap Aggregating, bootstrap aggregation, bagged ensemble, bagged predictor
Närliggande	2	5
Sammanfattning	Active learning is an iterative machine-learning paradigm in which a learning algorithm selectively queries an oracle — typically a human annotator — for labels on the most informative unlabeled examples. Formalized by Burr Settles in his seminal 2009 literature survey, active learning addresses the practical bottleneck of annotation cost by achieving high model accuracy with far fewer labeled examples than passive supervised learning requires.	Bagging, short for Bootstrap Aggregating, is an ensemble meta-algorithm introduced by Leo Breiman in 1996 that trains multiple copies of a base learner on independently drawn bootstrap samples of the training data and combines their predictions — by averaging for regression or majority vote for classification — to produce a final predictor with substantially lower variance than any single base learner.