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• W4312443721 abstract "While anomaly detection in time series has been an active area of research for several years, most recent approaches employ an inadequate evaluation criterion leading to an inflated F1 score. We show that a rudimentary Random Guess method can outperform state-of-the-art detectors in terms of this popular but faulty evaluation criterion. In this work, we propose a proper evaluation metric that measures the timeliness and precision of detecting sequential anomalies. Moreover, most existing approaches are unable to capture temporal features from long sequences. Self-attention based approaches, such as transformers, have been demonstrated to be particularly efficient in capturing long-range dependencies while being computationally efficient during training and inference. We also propose an efficient transformer approach for anomaly detection in time series and extensively evaluate our proposed approach on several popular benchmark datasets." @default.
• W4312443721 created "2023-01-04" @default.
• W4312443721 creator A5036320427 @default.
• W4312443721 creator A5051735484 @default.
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• W4312443721 date "2022-07-18" @default.
• W4312443721 modified "2023-10-18" @default.
• W4312443721 title "Reward Once, Penalize Once: Rectifying Time Series Anomaly Detection" @default.
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• W4312443721 doi "https://doi.org/10.1109/ijcnn55064.2022.9891913" @default.
• W4312443721 hasPublicationYear "2022" @default.
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