title: approximate query processing using wavelets kyuseok shim , kaushik chakrabarti , minos n. garofalakis , rajeev rastogi vldb 2000. authors: nan. venue: nan. year: nan
title: aqua : a fast decision support systems using approximate query answers swarup acharya , phillip b. gibbons , viswanath poosala very large data bases 1999. authors: nan. venue: nan. year: nan