1. A processor-readable storage medium storing processor-executable instructions, said instructions executable by a processor to: instantiate an automated data sampling and prediction structure training component, the automated data sampling and prediction structure training component being configured to automatically collect user event data samples, and use the collected user event data samples to train multiple prediction structures in parallel; receive, via the automated data sampling and prediction structure training component, user event data samples indicative of a user activity performance characteristic; identify user event data associated with one or more target attributes from the user event data samples; convert the user event data into a set of independent variables in compliance with a data format; build a prediction structure (1) having the set of independent variables as inputs and (2) that generates a prediction objective output during execution of the prediction structure; determine a prediction variable parameter for the prediction structure by instantiating the prediction structure; and execute, by the automated data sampling and prediction structure training component, the prediction structure associated with the prediction variable parameter to produce the prediction objective value.