Salīdzināt metodes
Apskatiet izvēlētās metodes blakus; rindas, kas atšķiras, ir izceltas.
| Regularizēta pastiprināšana× | Robustais gradientu pastiprinājums× | |
|---|---|---|
| Nozare | Mašīnmācīšanās | Mašīnmācīšanās |
| Saime | Machine learning | Machine learning |
| Izcelsmes gads≠ | 2001–2016 | 2001 |
| Autors≠ | Friedman, J. H.; extended by Chen & Guestrin | Friedman, J. H. (with Huber loss from Huber, P. J.) |
| Tips≠ | Regularized ensemble (boosting with shrinkage/penalty) | Ensemble (boosted trees with robust loss) |
| Pirmavots | Friedman, J. H. (2001). Greedy function approximation: A gradient boosting machine. Annals of Statistics, 29(5), 1189–1232. DOI ↗ | Friedman, J. H. (2001). Greedy function approximation: A gradient boosting machine. Annals of Statistics, 29(5), 1189–1232. DOI ↗ |
| Citi nosaukumi | shrinkage boosting, penalized boosting, regularized gradient boosting, L1/L2 boosting | gradient boosting with Huber loss, robust GBM, outlier-robust boosting, robust gradient-boosted trees |
| Saistītās≠ | 5 | 6 |
| Kopsavilkums≠ | Regularized boosting extends gradient boosting by adding explicit controls — shrinkage (learning rate), L1/L2 weight penalties, subsampling, and tree-complexity limits — to the objective function and the update rule. These constraints reduce overfitting, stabilise the model on noisy or small datasets, and are the core reason why systems such as XGBoost and LightGBM consistently outperform vanilla boosting on real-world tabular benchmarks. | Robust Gradient Boosting is gradient boosting trained with outlier-resistant loss functions — most commonly the Huber loss or quantile (pinball) loss — instead of squared-error loss. Proposed in Friedman's seminal 2001 paper, this variant produces predictions far less distorted by extreme values or contaminated labels, while retaining the full predictive power of gradient-boosted trees. |
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