1. A computerized method for matching item representations within a collection of item representations, the method comprising: determining candidate pairs of item representations based on frequency information indicative of the frequency at which terms appear in the collection of item representations, wherein the frequency information comprises an IDF score determined for each term based on the respective term's frequency of use within the collection of item representations, and wherein determining candidate pairs comprises determining an aggregate IDF score for pairs of item representations by adding the IDF scores for terms shared by each pair of item representations and comparing the aggregate IDF score for each pair of item representations against a threshold to determine if each pair of item representations qualifies as a candidate pair; and matching item representations by analyzing the candidate pairs using one or more fuzzy matching functions.