方法对比
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| 主动学习孤立森林× | 单类支持向量机× | |
|---|---|---|
| 领域 | 机器学习 | 机器学习 |
| 方法族 | Machine learning | Machine learning |
| 起源年份≠ | 2008–2019 | 1999–2001 |
| 提出者≠ | Das, S. et al. (active anomaly discovery framework); Liu, F. T. et al. (Isolation Forest base) | Scholkopf, B., Platt, J. C., Smola, A. J., Williamson, R. C. |
| 类型≠ | Active learning wrapper over isolation forest anomaly detector | Anomaly / novelty detection (unsupervised) |
| 开创性文献≠ | Das, S., Wong, W. K., Fern, A., Dietterich, T. G., & Amran Siddiqui, M. (2019). Incorporating Expert Feedback into Active Anomaly Discovery. In Proceedings of the 2019 IEEE International Conference on Data Mining (ICDM), pp. 1009–1014. link ↗ | 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. DOI ↗ |
| 别名 | AL-iForest, active anomaly detection with isolation forest, active isolation forest, query-guided isolation forest | OCSVM, one-class support vector machine, novelty SVM, unsupervised SVM |
| 相关≠ | 5 | 3 |
| 摘要≠ | Active Learning Isolation Forest combines the unsupervised anomaly-scoring power of Isolation Forest with an iterative query strategy that asks a human expert to label the most informative instances. The result is a detector that refines its anomaly boundaries using a minimal labeling budget, dramatically improving precision on rare and subtle anomalies compared to a purely unsupervised baseline. | 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. |
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