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Anomaly Detection in Practice
- Credit card fraud detection uses anomaly detection systems to identify unusual transactions.
- Server activity monitoring also applies anomaly detection to spot abnormal system behavior requiring attention.
Bell Curve and Anomalies
- The bell curve or Gaussian distribution is fundamental and represents most common data distributions.
- Outliers on the edges of this curve are anomalies and indicate unusual data points.
Epsilon Threshold in Anomaly Detection
- Anomaly detection learns a threshold epsilon to determine sensitivity to outliers.
- The system is trained mostly on normal data, using rare anomalies to tune detection sensitivity.