1. A system for providing reference documents as a suggestion for classifying electronically stored information using nearest neighbor, comprising: a clustering module to provide reference electronically stored information items previously classified and a set of uncoded electronically stored information items; a similarity module to compare at least one uncoded electronically stored information item with the reference electronically stored information items and to identify one or more of the reference electronically stored information items that are similar to the at least one uncoded electronically stored information item; and a display to depict relationships between the at least one uncoded electronically stored information item and the similar reference electronically stored information items for classifying the at least one uncoded electronically stored information item.