Theproliferationofinformationhousedincomputerizeddomainsmakesitvitaltofindtoolstosearchtheseresourcesefficientlyandeffectively.Ordinaryretrievaltechniquesareinadequatebecausesortingissimplyimpossible.Consequently,proximitysearchinghasbecomeafundamentalcomputationtaskinavarietyofapplication