10. The method of claim 9, wherein said sorted list includes a most relevant document having an absolute relevance score higher than said absolute relevance scores of all other training documents in said sorted list and a least relevant document having an absolute relevance score lower than said absolute relevance scores of all other training documents in said sorted list, and wherein said step of performing a binary search comprises the step of comparing said absolute relevance score of said newly-received document with a statistical average of said absolute relevance scores of said most relevant document and said least relevant document.
9. The method of claim 7, wherein said step of determining said rank comprises the step of performing a binary search on said plurality of training documents to determine a first training document and a second training document having absolute relevance scores above and below said absolute relevance score of said newly-received document.