1. At least one computer readable medium having stored thereon computer-executable instructions for a method comprising: obtaining a set of recorded translational diffusion-weighted magnetic resonance signals associated with a diffusion time; generating a non-parametric estimate of a distribution of at least one parameter associated with translational diffusion in at least one restricted compartment of a sample associated with the set of signals; based on the initial estimate, generate a final estimate of the distribution of the at least one parameter; and communicating the final estimate of the distribution.