Unsupervised Anomaly Detection in ALS EPICS Event Logs
By: Antonin Sulc, Thorsten Hellert, Steven Hunt
Potential Business Impact:
Finds computer problems before they break things.
This paper introduces an automated fault analysis framework for the Advanced Light Source (ALS) that processes real-time event logs from its EPICS control system. By treating log entries as natural language, we transform them into contextual vector representations using semantic embedding techniques. A sequence-aware neural network, trained on normal operational data, assigns a real-time anomaly score to each event. This method flags deviations from baseline behavior, enabling operators to rapidly identify the critical event sequences that precede complex system failures.
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