24. The method according to claim 19 , further comprising: determining the selected electronic coded reference documents based on a similarity metric, comprising: forming a score vector for the one or more electronic uncoded documents in the at least one cluster of the electronic uncoded documents and each reference document in the electronic coded reference document set; and calculating the similarity metric by comparing the score vector for the one or more electronic uncoded documents with the score vector for one of the electronic coded reference documents as an inner product.
19. A method for injecting electronic coded reference documents into a cluster set as suggestions for classifying electronic uncoded documents, comprising: designating a electronic coded set of reference documents each associated with a classification code; designating clusters of electronic uncoded documents; comparing one or more of the electronic uncoded documents in at least one of the clusters of the electronic uncoded documents to the electronic coded reference document set and selecting the electronic coded reference documents that satisfy a similarity threshold with the one or more electronic uncoded documents; injecting the selected electronic coded reference documents into the at least one cluster of the electronic uncoded documents; and displaying relationships between the electronic uncoded documents and the selected electronic coded reference documents in the at least one cluster as suggestions for classifying the electronic uncoded documents, wherein each of the electronic uncoded documents are displayed via a first symbol and each of the selected electronic coded reference documents are displayed via a second symbol.