13. At least one non-transitory computer-readable medium storing computer-readable instructions that, when executed by one or more computing devices, cause at least one of the one or more computing devices 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.
13. At least one non-transitory computer-readable medium storing computer-readable instructions that, when executed by one or more computing devices, cause at least one of the one or more computing devices 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. 14. The at least one non-transitory computer-readable medium of claim 13 , 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.