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APPLICATION OF MACHINE LEARNED BAYESIAN NETWORKS TO DETECTION OF ANOMALIES IN COMPLEX SYSTEMS

  • US 20130198119A1
  • Filed: 01/09/2013
  • Published: 08/01/2013
  • Est. Priority Date: 01/09/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method for anomaly detection, the method comprising:

  • in response to a set of data for anomaly detection, applying a Bayesian belief network (BBN) model to the data set, including for each of a plurality of features of the BBN model, performing an estimate using known observed values associated with remaining features to generate a posterior probability for the corresponding feature; and

    performing a scoring operation using a predetermined scoring algorithm on posterior probabilities of all of the features to generate a similarity score, wherein the similarity score represents a degree to which a given event represented by the data set is novel relative to historical events represented by the BBN model.

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