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CAD-DA: Controllable Anomaly Detection after Domain Adaptation by Statistical Inference

Vo Nguyen Le Duy · Hsuan-Tien Lin · Ichiro Takeuchi

MR1 & MR2 - Number 53
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Thu 2 May 8 a.m. PDT — 8:30 a.m. PDT

Abstract: We propose a novel statistical method for testing the results of anomaly detection (AD) under domain adaptation (DA), which we call CAD-DA---controllable AD under DA. The distinct advantage of the CAD-DA lies in its ability to control the probability of misidentifying anomalies under a pre-specified level $\alpha$ (e.g., 0.05). The challenge within this DA setting is the necessity to account for the influence of DA to ensure the validity of the inference results. We overcome the challenge by leveraging the concept of Selective Inference to handle the impact of DA. To our knowledge, this is the first work capable of conducting a valid statistical inference within the context of DA. We evaluate the performance of the CAD-DA method on both synthetic and real-world datasets.

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