13. The method of claim 1 wherein the data objects are Web pages to be indexed by a search engine, and wherein frequently occurring shingles are eliminated before assigning the unique identifications.
13. The method of claim 1 wherein the data objects are Web pages to be indexed by a search engine, and wherein frequently occurring shingles are eliminated before assigning the unique identifications. 15. The method of claim 13 and wherein only different Web pages are indexed.