方法对比

	在线半监督学习	主动学习
领域	机器学习	机器学习
方法族	Machine learning	Machine learning
起源年份	2000s–2010s	2009
提出者	Goldberg, A., Li, M., & Zhu, X. (and others in stream learning community)	Burr Settles
类型	Incremental / stream-based semi-supervised learning framework	Interactive supervised learning framework
开创性文献	Goldberg, A., Li, M., & Zhu, X. (2008). Online manifold regularization: A new learning setting and empirical study. In Proceedings of the European Conference on Machine Learning and Knowledge Discovery in Databases (ECML PKDD), pp. 393–407. Springer.	Settles, B. (2009). Active learning literature survey. University of Wisconsin-Madison Computer Sciences Technical Report 1648.
别名	stream-based semi-supervised learning, incremental semi-supervised learning, online SSL, semi-supervised online learning	Query Learning, Optimal Experimental Design (ML context), Pool-Based Active Learning, Aktif Öğrenme
相关	6	2
摘要	Online semi-supervised learning combines the incremental, one-pass nature of online learning with the ability to exploit unlabeled data alongside sparse labeled observations. It is designed for settings where data arrives as a stream and obtaining labels for every instance is expensive or impractical — such as real-time classification of web content, sensor readings, or social media posts.	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.