1. A computer-implemented method for classifying an electronic document, the method comprising: analyzing, with a computing device, author-generated classification information regarding a document and assigning a set of first taxonomic nouns to characterize the document based upon the author-generated classification information; examining, with a computing device, a user-generated tag from a client computer characterizing a portion of the document and assigning a set of second taxonomic nouns to characterize the document based upon the user-generated tag characterization; identifying, with a computing device, a method of access through which the document has been accessed from a content provider and assigning a set of third taxonomic nouns to characterize the document based upon the method of access; evaluating, with a computing device, attributes related to the method of access and assigning a set of fourth taxonomic nouns to characterize the document based upon the attributes related to the method of access; processing, with a computing device, the document to extract a set of fifth taxonomic nouns to characterize the document based upon a predetermined pattern rule; aggregating, with a computing device, the taxonomic nouns to determine at least one term vector that represents the document; and categorizing, with a computing device, the document based upon the taxonomic nouns, the author-generated classification information, and at least one of the term vectors.