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1、1160IEEETRANSACTIONSONINFORMATIONFORENSICSANDSECURITY,VOL.6,NO.3,SEPTEMBER2011CorrespondenceCandidateListReductionBasedontheAnalysisofcandidateconsistsofadatabasefingerprintidentifierandasimilarityFingerprintIndexingScoresscore(ordistancemeasure);second,areducedcandidatelist(RCL)isderivedfrom
2、theICL,byapplyingareductioncriterion.AlthoughtheRaffaeleCappelli,MatteoFerrara,andDarioMaiovariousapproachesproposedintheliteratureuseverydifferentfea-turesandstrategies,tothebestofourknowledge,onlytworeductioncriteriahavebeenexplored:fixedthreshold(onlyfingerprintswithin-Abstract—Thiscorresp
3、ondenceproposesnewcandidatelistreductioncriteriaforfingerprintindexingapproaches.Thebasicideaisthat,givenadexingscorehigherthanafixedthresholdareselected)andtoprankingqueryfingerprint,theinitialsetofscoresproducedbyanindexercould(afixednumberofcandidateswiththehighestscoresisretained).Incontain
4、usefulinformationtoreducethecandidatelist.Novelreductionsomestudies,morecomplexcriteriatoproducethecandidatelisthavecriteriahavebeenproposed,andextensiveexperimentshavebeencarriedbeenproposed,butonlywiththeaimofcombiningmultiplepreselec-outoverfivepubliclyavailablebenchmarks,usingtwostate-of
5、-the-artfin-tiontechniques(e.g.,[12]).Theguidingideaofthiscorrespondenceisgerprintindexingtechniques.Althoughquitesimple,theproposedcriteriaachievedremarkableresults,allowingasubstantialreductionofthecan-that,givenaqueryfingerprint,theICLscoresmaycontainmoreusefuldidatelist:forinstance,at1%er
6、rorrate,theaveragepenetrationrateofinformationthanwhatisexploitedbyasimplefixedthresholdortopastate-of-the-artminutiae-basedindexerdecreasesfrom27%to3.9%onrankingcriterion.Withtheaimofverifyingthishypothesis,newcandi-FVC2000DB2.Thenewreductioncriteriaareapplicabletoanyindexingdatelistreducti
7、oncriteriaareproposedandsystematicallyevaluated,approach,sincetheyonlyrequirealistofscoresasinput.usingtwodifferentstate-of-the-artindexingapproaches.Theexperi-IndexTerms—Candidatelistreduction,fingerprints,identification,in-mentalresultsshowthattheanalysi
