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1、Web-BasedSocialNetworks:ASurveyandFutureDirections1JenniferGolbeckMINDSWAPUniversityofMaryland,CollegeParkCollegePark,Maryland20740Abstract:Web-basedsocialnetworks(WBSNs)aregrowingrapidly,andofferatantalizingsetofdataforresearchers.Notonlyaretheremillionsofusersandconnectionsbetweenthem,butuser
2、sareoftenallowedtoaugmenttheirrelationshipswithinformationsuchastype,strength,orduration.Thispapersetsouttopresentacomprehensivesurveyofthesenetworksandtheirproperties.Webeginwithcriteriaanddefinitionstodeterminewhichsitesqualifyforinclusioninthissurvey.Afterpresentingcategories,size,andotherin
3、formation,wediscussFOAF,aSemanticWeb-basedsocialnetworkinginitiativeanddiscussitsroleinthefutureofWBSNs.1JenniferGolbeck,MINDSWAP,8400BaltimoreAve,Suite200,CollegePark,MD20740golbeck@cs.umd.edu2Thiswork,conductedattheMarylandInformationandNetworkDynamicsLaboratorySemanticWebAgentsProject,wasfun
4、dedbyFujitsuLaboratoriesofAmerica--CollegePark,LockheedMartinAdvancedTechnologyLaboratory,NTTCorp.,KevricCorp.,SAIC,theNationalScienceFoundation,theNationalGeospatial-IntelligenceAgency,DARPA,USArmyResearchLaboratory,NIST,andotherDoDsources.JenniferGolbeckWeb-basedSocialNetworks:ASurveyandFutur
5、eDirections1IntroductionWeb-basedsocialnetworks(WBSN)havegrownquicklyinnumberandscopesincethemid-1990s.Theypresentaninterestingchallengetotraditionalwaysofthinkingaboutsocialnetworks.First,theyarelarge,livingexamplesofsocialnetworks.Ithasrarely,ifever,beenpossibletolookatanactualnetworkofmillio
6、nsofpeoplewithoutusingmodelstofillinorsimulatemostofthenetwork.Theproblemofgatheringsocialinformationaboutalargegroupofpeoplehasbeenadifficultone.WithWBSNs,therearemanynetworkswithmillionsofusersthatneednogenerateddata.Thesenetworksarealsomuchmorecomplexwithrespecttothetypesofrelationshipstheya
7、llow.Informationqualifyingandquantifyingaspectsofthesocialconnectionbetweenpeopleiscommon.Thismeansthereisapotentialformuchricheranalysisofthenetwork.Aspublicinterestinsocialnetworkinghasgrown,theterm"socialnetwork"hasbecomelooser
