title: approximate xml joins h. v. jagadish , ting yu , divesh srivastava , sudipto guha , nick koudas. authors: nan. venue: sigmod conference. year: 2002.0
title: approximate query processing using wavelets. authors: kaushik chakrabarti , minos n. garofalakis , rajeev rastogi , kyuseok shim. venue: very large data bases. year: 2000.0