8. The system according to claim 1 , further comprising: a conversion module to convert a document into one or more of the uncoded concepts; an identification module to identify all of the classified uncoded concepts associated with the document upon classification of multiple uncoded concepts; and a document classification module to determine a classification code of the document based on the classification codes of all of the associated classified uncoded concepts.
8. The system according to claim 1 , further comprising: a conversion module to convert a document into one or more of the uncoded concepts; an identification module to identify all of the classified uncoded concepts associated with the document upon classification of multiple uncoded concepts; and a document classification module to determine a classification code of the document based on the classification codes of all of the associated classified uncoded concepts. 9. The system according to claim 8 , further comprising at least one of: a count module to count the associated classified uncoded concepts for each of the classification codes and to assign the classification code with the most associated concepts as the classification code of the document; and an assignment module to assign a weight to each of the associated classified uncoded concepts, determine the classification code associated with a highest weight of the classified uncoded concepts, and to assign the classification code associated with the highest weight as the classification code of the document.