SYSTEM AND METHOD FOR DETECTING ANOMALY CONDITIONS OF SENSOR ATTACHED DEVICES
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United States of America Patent
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Dec 22, 2016
app pub date -
Jun 3, 2015
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Jun 3, 2015
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Abstract
A data monitoring system detects an anomaly condition of a device having attached sensors. The system builds one or more models to establish normal behaviors of the device by analyzing historical sensor data, and apply the models to target sensor data of the device to compute one or more anomaly scores of the device. The system reports the condition of the device based on an analysis of the anomaly scores. To build the one or more models, the system identifies at least one optimization problem for each of the models; constructs a dynamical system such that stable equilibrium points (SEPs) of the dynamical system have one-to-one correspondence with local optimal solutions of the at least one optimization problem; finds the local optimal solutions by computing the SEPs of the dynamical system; and identifies a global optimal solution to the at least one optimization problem among the local optimal solutions.
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