Patent Document ID: 9046854
Application ID: 13929760
Patent Flag: 1

Claim One:
1. A method to rapidly detect anomalies in measurement and/or usage which would prevent accurate estimates of supply level and of remaining useful life of a consumable in an image reproduction device, the method comprising: selectively segmenting consumables into groups which show statistically different levels of prediction accuracy by prediction models when a prediction was given by a prediction model applied to a historic consumable usage dataset; wherein segmenting the consumables into groups comprises determining a mean and standard deviation or variance (Vur) of a usage rate of the consumable; wherein the prediction accuracy is a prediction error based on a difference between a predicted target day (PTD) as predicted by the prediction models and an actual target day(ATD); applying statistical metrics to the groups which show statistically different levels of prediction accuracy for a given time window; wherein the statistical metrics is a percentage of consumables within a predetermined range from the actual target day (ATD); determining, from the statistical metrics of the prediction accuracy, if an employed prediction model is likely to provide an inaccurate estimate of the remaining useful life of the consumable; wherein if it is determined that the employed prediction model is likely to provide an inaccurate estimate, then sending a message suggesting changing the employed prediction model.