20. The computer-readable medium of claim 17, wherein said software further comprises instructions for executing the steps of: determining, on the basis of said absolute relevance score of said newly-received document and said absolute relevance scores of each of said plurality of training documents, a rank of said newly-received document relative to each of said plurality of training documents; and inserting said newly-received document into said sorted list according to said rank.
21. The computer-readable medium of claim 20, wherein said instructions further comprise instructions for executing the step of presenting said sorted list of relevant documents, including said newly-received document, to a user.