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| Halb-überwachtes Gradient Boosting× | XGBoost× | |
|---|---|---|
| Fachgebiet | Maschinelles Lernen | Maschinelles Lernen |
| Familie | Machine learning | Machine learning |
| Entstehungsjahr≠ | 2006–2010s | 2016 |
| Urheber≠ | Chapelle, Scholkopf & Zien (eds.); applied to GBM variants in subsequent literature | Chen, T. & Guestrin, C. |
| Typ≠ | Semi-supervised ensemble (self-training + gradient boosted trees) | Ensemble (gradient-boosted decision trees) |
| Wegweisende Quelle≠ | Yarowsky, D. (1995). Unsupervised word sense disambiguation rivaling supervised methods. Proceedings of ACL 1995, 189–196. (Foundational self-training framework underlying pseudo-label approaches.) link ↗ | Chen, T. & Guestrin, C. (2016). XGBoost: A Scalable Tree Boosting System. Proceedings of the 22nd ACM SIGKDD, 785–794. DOI ↗ |
| Aliasnamen≠ | pseudo-label gradient boosting, self-training GBM, semi-supervised GBT, label-propagation boosting | XGBoost, extreme gradient boosting, scalable tree boosting |
| Verwandt≠ | 6 | 5 |
| Zusammenfassung≠ | Semi-supervised gradient boosting combines gradient boosted trees with self-training or pseudo-labeling to exploit large pools of unlabeled data alongside a small labeled set. An initial GBM fit on labeled data assigns confident predictions to unlabeled examples; those pseudo-labeled points are folded back into training and the model is re-boosted, iterating until convergence. This allows practitioners to harness cheap unlabeled data when labels are scarce or expensive. | XGBoost (Extreme Gradient Boosting) is a scalable tree-boosting algorithm introduced by Tianqi Chen and Carlos Guestrin in 2016. It builds a strong predictor by adding decision trees one at a time, each correcting the errors left by the trees before it, and is a powerful prediction method widely used in competitions. |
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