Patent ID: 9392463
Filing Date: 2016-07-12
CPC Classification: H04L,H04M,H04W

Claim Text:
1. A system for detecting anomaly in a hand-held device comprising: a memory storing observations of one or more parameters with respect to time, wherein said parameters are based on one or more of user's mobility pattern, device usage context, messaging-based parameters, calling based parameters, email based parameters, browsing based parameters, phone profile based parameters, application based parameters, and device behaviour; a processor executing instructions stored in a storage device including: an anomaly detection engine coupled with the memory and configured to select and extract a first set of parameters, wherein said anomaly detection engine comprises: an index unit configured to construct one or more indexes based on said first set of parameters, wherein construction of said one or more indexes enables index values being associated with each of said first set of parameters; a time series model unit configured to fit a time-series on each constructed index; an outlier detection unit configured to detect outlier observations for each index based on said fitted time series model; a dummy variable assigner configured to associate each observation with a dummy variable value based on detected outlier observations, wherein said dummy variable assigner assigns “1” to outliers and “0” to normal observations; and a calculation unit to detect an anomaly based on said dummy variable values and said set of parameters.