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Zheng-Hua Tan

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#machine learning Preprint Sep 2026

Can We Predict Anomaly Detection Performance from Embedding-Space Geometry?

Anomaly detection systems are often trained using normal data alone, while model selection and evaluation typically require labeled anomalies. We study whether anomaly detection performance can be predicted without access to anomalous data. For kNN-based detectors, we derive a lower bound on the area under the ROC curv...

Kevin Wilkinghoff, Zheng-Hua Tan · 1 citation · ⚡1