Módszerek összehasonlítása
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| Autoencoder× | DBSCAN× | One-Class SVM× | |
|---|---|---|---|
| Tudományterület≠ | Mélytanulás | Gépi tanulás | Gépi tanulás |
| Módszercsalád | Machine learning | Machine learning | Machine learning |
| Keletkezés éve≠ | 2006 | 1996 | 1999–2001 |
| Megalkotó≠ | Hinton, G.E. & Salakhutdinov, R.R. | Ester, M., Kriegel, H.-P., Sander, J. & Xu, X. | Scholkopf, B., Platt, J. C., Smola, A. J., Williamson, R. C. |
| Típus≠ | Neural network (encoder-decoder) | Density-based clustering algorithm | Anomaly / novelty detection (unsupervised) |
| Alapmű≠ | Hinton, G.E. & Salakhutdinov, R.R. (2006). Reducing the Dimensionality of Data with Neural Networks. Science, 313(5786), 504–507. DOI ↗ | 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 ↗ | 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 ↗ |
| Alternatív nevek≠ | Otokodlayıcı (Autoencoder), otokodlayıcı, auto-encoder, encoder-decoder network | DBSCAN Kümeleme, density-based clustering, density-based spatial clustering | OCSVM, one-class support vector machine, novelty SVM, unsupervised SVM |
| Kapcsolódó≠ | 4 | 3 | 3 |
| Összefoglaló≠ | An autoencoder is an encoder-decoder neural network, popularised by Hinton and Salakhutdinov in 2006, that compresses data into a low-dimensional latent code and then reconstructs it, enabling dimensionality reduction and anomaly detection. By learning to rebuild its own input through a narrow bottleneck, it discovers a compact representation of the data. | 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. | 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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