Compară metode
Examinează metodele selectate una lângă alta; rândurile care diferă sunt evidențiate.
| SVM pentru o singură clasă× | Factorul local de aberație (LOF)× | |
|---|---|---|
| Domeniu | Învățare automată | Învățare automată |
| Familie | Machine learning | Machine learning |
| Anul apariției≠ | 1999–2001 | 2000 |
| Autorul original≠ | Scholkopf, B., Platt, J. C., Smola, A. J., Williamson, R. C. | Breunig, M. M.; Kriegel, H.-P.; Ng, R. T.; Sander, J. |
| Tip≠ | Anomaly / novelty detection (unsupervised) | Density-based anomaly detection (unsupervised) |
| Sursa seminală≠ | 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 ↗ | Breunig, M. M., Kriegel, H.-P., Ng, R. T., & Sander, J. (2000). LOF: Identifying density-based local outliers. Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data, 93–104. DOI ↗ |
| Denumiri alternative | OCSVM, one-class support vector machine, novelty SVM, unsupervised SVM | LOF, local outlier factor, density-based outlier detection, local density deviation |
| Înrudite≠ | 3 | 4 |
| Rezumat≠ | 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. | Local Outlier Factor (LOF) is a density-based, unsupervised anomaly detection algorithm introduced by Breunig, Kriegel, Ng, and Sander in 2000. It assigns each data point a continuous outlier score that quantifies how isolated that point is relative to its local neighborhood, enabling detection of anomalies that global methods miss because they blend into dense clusters elsewhere in the space. |
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