7. A system for characterizing a document, the system comprising: one or more processors; and one or more memories operatively coupled to at least one of the one or more processors and having instructions stored thereon that, when executed by at least one of the one or more processors, cause at least one of the one or more processors to: generate one or more sets of taxonomic nouns corresponding to a document, wherein the one or more sets of taxonomic nouns comprise one or more of: a set of first taxonomic nouns based upon classification information generated by an author of the document; a set of second taxonomic nouns based upon one or more user-generated tags characterizing at least a portion of the document; a set of third taxonomic nouns based upon one or more search terms utilized to access the document; or a set of fourth taxonomic nouns based upon the attributes related to a method of access of the document; generate a set of fifth taxonomic nouns by processing the document based upon one or more pattern rules and a dictionary of known terms, wherein the one or more pattern rules specify a method of extracting terms from the document; and aggregate at least one of the one or more sets of taxonomic nouns with the set of fifth taxonomic nouns into a composite set of taxonomic nouns; and characterize the document based on the composite set of taxonomic nouns.
7. A system for characterizing a document, the system comprising: one or more processors; and one or more memories operatively coupled to at least one of the one or more processors and having instructions stored thereon that, when executed by at least one of the one or more processors, cause at least one of the one or more processors to: generate one or more sets of taxonomic nouns corresponding to a document, wherein the one or more sets of taxonomic nouns comprise one or more of: a set of first taxonomic nouns based upon classification information generated by an author of the document; a set of second taxonomic nouns based upon one or more user-generated tags characterizing at least a portion of the document; a set of third taxonomic nouns based upon one or more search terms utilized to access the document; or a set of fourth taxonomic nouns based upon the attributes related to a method of access of the document; generate a set of fifth taxonomic nouns by processing the document based upon one or more pattern rules and a dictionary of known terms, wherein the one or more pattern rules specify a method of extracting terms from the document; and aggregate at least one of the one or more sets of taxonomic nouns with the set of fifth taxonomic nouns into a composite set of taxonomic nouns; and characterize the document based on the composite set of taxonomic nouns. 8. The system of claim 7 , wherein the classification information generated by the author of the document comprises one or more of: a form of the document, content of the document, a function of the document, or metadata assigned to the document.