Patent ID: 8165849

Claim:
A method comprising: obtaining operational data of a device of interest, the operational data including a feature of interest; applying a transform via a processor of a machine to extract the feature of interest from the operational data; comparing via the processor a characteristic of a transform coefficient associated with the extracted feature of interest to a threshold derived at least in part from a statistical analysis of a population of additional devices similar to the device of interest, wherein the threshold is derived by using a failure prediction model to calculate the threshold; calculating via the processor an operating state of the device of interest dependent at least in part on the comparison; using the failure prediction model to calculate the probability of device failure in a finite future time period; selecting a service action for the device based at least in part on the use of a reliability model, wherein selecting a service action includes calculating expected changes in the probability of device failure associated with execution of each of a plurality of potential service actions; receiving additional operational data from the device following execution of a service action; calculating the effectiveness of an executed service action via the additional operational data and the reliability model; and outputting a report indicative of the operating state of the device.