Real-time spatio-temporal coherence estimation for autonomous mode identification and invariance tracking
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United States of America Patent
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Sep 23, 2003
Grant Date -
Jan 23, 2003
app pub date -
Mar 6, 2002
filing date -
Mar 8, 2001
priority date (Note) -
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Abstract
A general method of anomaly detection from time-correlated sensor data is disclosed. Multiple time-correlated signals are received. Their cross-signal behavior is compared against a fixed library of invariants. The library is constructed during a training process, which is itself data-driven using the same time-correlated signals. The method is applicable to a broad class of problems and is designed to respond to any departure from normal operation, including faults or events that lie outside the training envelope.
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