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System fault diagnosis via efficient temporal and dynamic historical fingerprint retrieval

  • US 10,289,478 B2
  • Filed: 04/18/2017
  • Issued: 05/14/2019
  • Est. Priority Date: 04/26/2016
  • Status: Active Grant
First Claim
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1. A computer-implemented method for multimodal fault diagnosis, the method comprising:

  • constructing, by a processor using an invariant model, a fault fingerprint based on a fault event;

    generating, by the processor, a feature vector in a feature subspace for the fault fingerprint, wherein said feature vector includes at least one status of at least one system component during the fault event, with fault fingerprint feature vectors generated from the fault fingerprint and one or more historical representative fingerprint feature vectors from the one or more historical representative fingerprints;

    determining, by the processor, a corrective action correlated to the fault fingerprint, from among a plurality of candidate corrective actions associated with the one or more historical representative fingerprints, based on a Jaccard similarity using the feature vector in the feature subspace; and

    initiating, by the processor, the corrective action on a hardware device to mitigate expected harm to at least one item selected from the group consisting of the hardware device, another hardware device related to the hardware device, and a person related to the hardware device.

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