9. The method as set forth in claim 1 , wherein the new document is annotated by a plurality of categories, and the updating includes: repeating the updating for a plurality of instances of the new document in which each instance is annotated by one of the plurality of categories.
10. The method as set forth in claim 9 , wherein the repeating of the updating for a plurality of instances of the new document includes: reusing common parameters of the plurality of instances including at least the total number of vocabulary words in the new document.