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Cross-dataset Time Series Anomaly Detection for Cloud Systems

Talkat USENIX ATC '19 · on Friday, 2019-07-12· at 12:50· USENIX ATC Track II: Grand Ballroom VII–IX· [machine-learning]
name:Xu Zhang
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name:Yong Xu
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name:Si Qin
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name:Bo Qiao
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name:Ken Hsieh
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name:Xin Meng
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name:Yaohai Xu
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ATAD trains anomaly detectors on labelled cloud datasets and applies them to new unlabelled services by combining transfer learning with active learning; features include statistical summaries, forecasting features (ARIMA/seasonality), and time-proximity deltas. A clustering-based mapping aligns source feature groups to target data before per-cluster transfer, then active queries pick diverse, high-uncertainty windows for human labels. Experiments on Yahoo/Twitter and Microsoft traces raise F1 significantly and need only 1%-5% labels to reach strong performance.

AI-written summary · about

  1. 0:00Start
  2. 1:33Anomaly detection for cloud systems: a common problem
  3. 5:58Our Approach - ATAD
  4. 7:35Feature Identification
  5. 8:42Transfer between Source & Target Domain
  6. 10:08Making Transfer Learning More Effective
  7. 10:57Active Learning Component
  8. 11:49Identifying high uncertainty instances
  9. 12:29Maximizing the context diversity of candidates to be labeled
  10. 13:18Experiments
  11. 14:01Setup
  12. 15:41How effective is the Transfer Learning component?
  13. 16:47How effective is the Active Learning
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