1. A method of determining a best match between a target profile and a set of stored profiles, wherein a profile contains a set of identifying information extracted from an image set associated with the profile, the method comprising computer-implemented steps of: generating a plurality of confidence scores based on comparisons between the target profile and the set of stored profiles; weighting the generated confidence scores using information external to the confidence scores; and selecting a stored profile as the best match for the target profile based on the plurality of weighted confidence scores.