1. A computer-implemented method comprising: selecting a first search object from a set of search objects; and performing a pairwise comparison between the first search object and each other search object from the set of search objects to generate a rank distribution for the first search object, wherein the pairwise comparison is based on a score distribution for each of the set of search objects, wherein the rank distribution comprises a set of probabilities, each probability corresponding to the probability that the first search object has a particular rank.