1. A method comprising: receiving information associated with a plurality of renderings of a three-dimensional (3D) model, wherein the information associated with the plurality of renderings identifies portions of interest of the 3D model which are inspected while the 3D model is rendered on a display; determining frequencies with which the portions of interest are inspected based on the received information, wherein a given frequency for a given portion of interest is determined based on a number of times the given portion is inspected throughout the plurality of renderings; determining priority values for the portions of interest based on the frequencies with which the portions of interest are inspected, wherein a priority value of a given portion of interest indicates a priority of the given portion of interest relative to the portions of interest; and determining via a processor a statistical model for the 3D model based on the priority values for the portions of interest.