2 code implementations • 1 Dec 2019 • Yue Zhao, Maciej K. Hryniewicki
A new semi-supervised ensemble algorithm called XGBOD (Extreme Gradient Boosting Outlier Detection) is proposed, described and demonstrated for the enhanced detection of outliers from normal observations in various practical datasets.
1 code implementation • 23 Nov 2019 • Yue Zhao, Maciej K. Hryniewicki
Selecting and combining the outlier scores of different base detectors used within outlier ensembles can be quite challenging in the absence of ground truth.
1 code implementation • 4 Dec 2018 • Yue Zhao, Zain Nasrullah, Maciej K. Hryniewicki, Zheng Li
The top-performing base detectors in this local region are selected and combined as the model's final output.