手法を比較

	自己教師ありOne-class SVM	One-Class SVM
分野	機械学習	機械学習
系統	Machine learning	Machine learning
提唱年	2018	1999–2001
提唱者	Golan & El-Yaniv; Ruff et al.	Scholkopf, B., Platt, J. C., Smola, A. J., Williamson, R. C.
種類	Self-supervised anomaly/novelty detection	Anomaly / novelty detection (unsupervised)
原典	Golan, I. & El-Yaniv, R. (2018). Deep One-Class Classification. Proceedings of the 35th International Conference on Machine Learning (ICML), PMLR 80, 1747–1756.	Scholkopf, B., Platt, J. C., Shawe-Taylor, J., Smola, A. J., & Williamson, R. C. (2001). Estimating the support of a high-dimensional distribution. Neural Computation, 13(7), 1443–1471.
別名	SS-OCSVM, Self-supervised SVDD, Self-supervised novelty detection, Pretext-task OC-SVM	OCSVM, one-class support vector machine, novelty SVM, unsupervised SVM
関連	6	3
概要	Self-supervised One-class SVM combines pretext-task-based representation learning with One-class SVM to detect anomalies and novelties without requiring labeled anomaly examples. The model first learns expressive feature embeddings from normal data alone, then fits an OC-SVM boundary in the learned feature space to flag out-of-distribution samples.	One-class SVM is an unsupervised anomaly and novelty detection algorithm that learns a tight boundary around normal training data in a kernel-induced feature space, flagging new observations that fall outside that boundary as outliers. Introduced by Scholkopf et al. in 1999–2001, it extends the SVM framework to the single-class setting where no labelled anomalies are available.