20. The computer system of claim 10 , wherein the usage data is first usage data, the wireless device is a first wireless device, and the processor is to correlate the first usage data and second usage data from a second wireless device to determine a similarity value between the first usage data and the second usage data.
10. A computer system to process usage data received from a wireless device, the computer system comprising: a memory including machine readable instructions; and a processor to execute the instructions to: process the usage data to identify first and second user-invoked applications which were sequentially accessed on the wireless device in a time period, the first and second applications being sequentially accessed without an intermediary application being accessed after the first application is accessed and prior to the second application being accessed; build, using an aggregator, a behavior model based on the identified applications, the behavior model to describe user behavior associated with the wireless device; execute, using a predictor, the behavior model to predict usage of an application on the wireless device; based on the prediction, monitor usage of the wireless device to determine an accuracy of the prediction; and update the behavior model based on the accuracy of the prediction, wherein at least one of the aggregator or the predictor includes a logic circuit.