Patent ID: 8463641
Filing Date: 2013-06-11
Classification: G06Q

Abstract:
1. A method for troubleshooting a fault to determine a root cause of the fault, the method comprising: using a computer to create a Bayesian network model based on information obtained from a Fault Isolation Manual (FIM), where said FIM provides tests to be performed in troubleshooting said fault to determine a root cause of said fault; using heuristics to determine a structure and conditional probabilities for the Bayesian network; imputing a plurality of test costs to the computer which are inherent in the FIM by first generating a plurality of constraints between the cost of each test and fault probabilities that hold for all fault scenarios; using a linear programming algorithm running on the computer to solve said plurality of constraints, and to construct a tuned Bayesian network model; causing the computer to use the tuned Bayesian network model to compute, at each operation of the troubleshooting process: using the computer to simultaneously display on a display system, at each operation of the troubleshooting process: