5. The computer-storage media of claim 4 , wherein each document in the second set of documents is contained in the first set of documents.
5. The computer-storage media of claim 4 , wherein each document in the second set of documents is contained in the first set of documents. 6. The computer-storage media of claim 5 , wherein the second set of documents is identified by the final ranking process that is part of the overall ranking process, wherein the final ranking process utilizes the forward index portion.