方法对比
并排查看您选择的方法；存在差异的行会高亮显示。
| DBSCAN× | 孤立森林 (Isolation Forest)× | 单类支持向量机× | |
|---|---|---|---|
| 领域 | 机器学习 | 机器学习 | 机器学习 |
| 方法族 | Machine learning | Machine learning | Machine learning |
| 起源年份≠ | 1996 | 2008 | 1999–2001 |
| 提出者≠ | Ester, M., Kriegel, H.-P., Sander, J. & Xu, X. | Liu, F.T., Ting, K.M. & Zhou, Z.-H. | Scholkopf, B., Platt, J. C., Smola, A. J., Williamson, R. C. |
| 类型≠ | Density-based clustering algorithm | Unsupervised ensemble (random partitioning trees) | Anomaly / novelty detection (unsupervised) |
| 开创性文献≠ | Ester, M., Kriegel, H.-P., Sander, J. & Xu, X. (1996). A Density-Based Algorithm for Discovering Clusters in Large Spatial Databases with Noise. Proceedings of the 2nd KDD, 226–231. link ↗ | Liu, F.T., Ting, K.M. & Zhou, Z.-H. (2008). Isolation Forest. IEEE ICDM, 413–422. DOI ↗ | 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≠ | DBSCAN Kümeleme, density-based clustering, density-based spatial clustering | Isolation Forest (Aykırı Değer Tespiti), iForest, isolation forest anomaly detection | OCSVM, one-class support vector machine, novelty SVM, unsupervised SVM |
| 相关≠ | 3 | 5 | 3 |
| 摘要≠ | DBSCAN is a density-based clustering algorithm, introduced by Ester, Kriegel, Sander and Xu in 1996, that groups together points lying in dense regions and flags points in sparse regions as noise. It is effective on noisy data and on clusters of irregular, non-spherical shapes. | Isolation Forest is an unsupervised machine-learning method for anomaly and outlier detection, introduced by Liu, Ting and Zhou in 2008, that isolates anomalies through random partitioning of the data. It works without any labelled anomaly data and scales to high-dimensional datasets. | 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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