1. A system for providing coded reference electronically stored information items as a suggestion for classifying uncoded electronically stored information, comprising: a database to store a coded reference set comprising electronically stored information items each associated with a classification code; a cluster module to designate clusters of uncoded electronically stored information items; a similarity module to compare one or more of the uncoded electronically stored information items from at least one cluster of the uncoded electronically stored information items to the coded reference set of the coded electronically stored information items and to identify at least one of the coded electronically stored information items in the coded reference set that is similar to the one or more uncoded electronically stored information items; an injection module to inject the similar coded electronically stored information items into the at least one cluster of the uncoded electronically stored information items; and a display to visually depict relationships between the uncoded electronically stored information items and the similar coded electronically stored information items in the at least one cluster as suggestions for classifying the uncoded electronically stored information items, wherein each of the uncoded electronically stored information items are displayed via a first symbol and each of the similar coded electronically stored information items are displayed via a second symbol.
5. The system according to claim 1 , wherein the comparison of the one or more uncoded documents and the coded reference document set of the coded electronically stored information items comprises identifying a spine along which the at least one cluster of the uncoded electronically stored information items is located, wherein the spine comprises one or more other clusters, and comparing the uncoded electronically stored information items along the spine to the coded electronically stored information items in the coded reference set.